./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-100.i --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/pthread-theta/unwind2-100.i -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 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:32:47,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:32:47,375 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:32:47,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:32:47,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:32:47,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:32:47,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:32:47,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:32:47,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:32:47,406 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:32:47,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:32:47,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:32:47,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:32:47,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:32:47,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:32:47,408 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:32:47,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:32:47,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:32:47,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:32:47,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:32:47,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:32:47,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:32:47,410 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 -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2025-03-09 01:32:47,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:32:47,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:32:47,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:32:47,612 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:32:47,613 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:32:47,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-03-09 01:32:48,710 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55078d26/559401f1884f41c28ce85c119d856ec6/FLAG3af2fd0ff [2025-03-09 01:32:49,006 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:32:49,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-03-09 01:32:49,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55078d26/559401f1884f41c28ce85c119d856ec6/FLAG3af2fd0ff [2025-03-09 01:32:49,286 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e55078d26/559401f1884f41c28ce85c119d856ec6 [2025-03-09 01:32:49,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:32:49,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:32:49,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:32:49,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:32:49,293 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:32:49,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c922600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49, skipping insertion in model container [2025-03-09 01:32:49,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:32:49,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:32:49,518 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:32:49,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:32:49,578 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:32:49,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49 WrapperNode [2025-03-09 01:32:49,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:32:49,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:32:49,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:32:49,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:32:49,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,606 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 79 [2025-03-09 01:32:49,607 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:32:49,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:32:49,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:32:49,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:32:49,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,628 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 01:32:49,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,633 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:32:49,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:32:49,642 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:32:49,642 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:32:49,645 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (1/1) ... [2025-03-09 01:32:49,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:32:49,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:49,675 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 01:32:49,683 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 01:32:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:32:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-09 01:32:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-09 01:32:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-09 01:32:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-09 01:32:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:32:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:32:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:32:49,700 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 01:32:49,793 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:32:49,795 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:32:49,950 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:32:49,950 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:32:50,038 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:32:50,039 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:32:50,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:32:50 BoogieIcfgContainer [2025-03-09 01:32:50,040 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:32:50,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:32:50,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:32:50,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:32:50,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:32:49" (1/3) ... [2025-03-09 01:32:50,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17439bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:32:50, skipping insertion in model container [2025-03-09 01:32:50,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:32:49" (2/3) ... [2025-03-09 01:32:50,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17439bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:32:50, skipping insertion in model container [2025-03-09 01:32:50,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:32:50" (3/3) ... [2025-03-09 01:32:50,048 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2025-03-09 01:32:50,058 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:32:50,060 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-100.i that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 3 error locations. [2025-03-09 01:32:50,060 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:32:50,103 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:32:50,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2025-03-09 01:32:50,151 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2025-03-09 01:32:50,154 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:32:50,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-03-09 01:32:50,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2025-03-09 01:32:50,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2025-03-09 01:32:50,168 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:32:50,176 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;@1607b4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:32:50,176 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-09 01:32:50,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:32:50,183 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-03-09 01:32:50,183 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-09 01:32:50,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:50,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:50,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:50,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash 771893669, now seen corresponding path program 1 times [2025-03-09 01:32:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629532955] [2025-03-09 01:32:50,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:50,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 01:32:50,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 01:32:50,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:50,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:50,434 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 01:32:50,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:50,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629532955] [2025-03-09 01:32:50,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629532955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:50,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:50,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:32:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919203066] [2025-03-09 01:32:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:50,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:32:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:50,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:32:50,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:32:50,467 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:50,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:32:50,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:50,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:50,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:50,823 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2025-03-09 01:32:50,823 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-09 01:32:50,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3090 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2025-03-09 01:32:50,828 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2025-03-09 01:32:50,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2025-03-09 01:32:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:32:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:32:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-03-09 01:32:50,840 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-03-09 01:32:50,842 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2025-03-09 01:32:50,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2025-03-09 01:32:50,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:32:50,850 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2025-03-09 01:32:50,851 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2025-03-09 01:32:50,856 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2025-03-09 01:32:50,856 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2025-03-09 01:32:50,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 01:32:50,857 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:50,857 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:50,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:32:50,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:50,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1842085899, now seen corresponding path program 1 times [2025-03-09 01:32:50,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:50,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3377576] [2025-03-09 01:32:50,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:50,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 01:32:50,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 01:32:50,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:50,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:50,973 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 01:32:50,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3377576] [2025-03-09 01:32:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3377576] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:50,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275425503] [2025-03-09 01:32:50,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:50,975 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 01:32:50,977 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 01:32:51,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 01:32:51,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 01:32:51,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:51,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:51,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:32:51,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:51,276 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 01:32:51,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:51,333 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 01:32:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275425503] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:51,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-09 01:32:51,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579027177] [2025-03-09 01:32:51,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:51,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:32:51,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:51,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:32:51,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:32:51,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:51,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 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 01:32:51,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:51,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:51,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:51,740 INFO L124 PetriNetUnfolderBase]: 401/812 cut-off events. [2025-03-09 01:32:51,741 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2025-03-09 01:32:51,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1945 conditions, 812 events. 401/812 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4218 event pairs, 42 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 747. Up to 215 conditions per place. [2025-03-09 01:32:51,745 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 103 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2025-03-09 01:32:51,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 128 transitions, 592 flow [2025-03-09 01:32:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:32:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:32:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 256 transitions. [2025-03-09 01:32:51,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5182186234817814 [2025-03-09 01:32:51,747 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 13 states and 256 transitions. [2025-03-09 01:32:51,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 128 transitions, 592 flow [2025-03-09 01:32:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 128 transitions, 578 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 01:32:51,751 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 222 flow [2025-03-09 01:32:51,751 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-03-09 01:32:51,751 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2025-03-09 01:32:51,752 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 222 flow [2025-03-09 01:32:51,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.285714285714286) internal successors, (158), 14 states have internal predecessors, (158), 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 01:32:51,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:51,752 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:51,759 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 01:32:51,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:51,957 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:51,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:51,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1083822304, now seen corresponding path program 1 times [2025-03-09 01:32:51,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:51,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640091103] [2025-03-09 01:32:51,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:51,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:51,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 01:32:51,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 01:32:51,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:51,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:52,041 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 01:32:52,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640091103] [2025-03-09 01:32:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640091103] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:52,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:32:52,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608498036] [2025-03-09 01:32:52,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:52,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:32:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:52,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:32:52,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:32:52,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:52,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:32:52,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:52,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:52,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:52,220 INFO L124 PetriNetUnfolderBase]: 463/950 cut-off events. [2025-03-09 01:32:52,220 INFO L125 PetriNetUnfolderBase]: For 1506/1506 co-relation queries the response was YES. [2025-03-09 01:32:52,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 950 events. 463/950 cut-off events. For 1506/1506 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5067 event pairs, 134 based on Foata normal form. 0/904 useless extension candidates. Maximal degree in co-relation 1652. Up to 322 conditions per place. [2025-03-09 01:32:52,226 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 75 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2025-03-09 01:32:52,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 703 flow [2025-03-09 01:32:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:32:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:32:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2025-03-09 01:32:52,229 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2025-03-09 01:32:52,229 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 222 flow. Second operand 7 states and 135 transitions. [2025-03-09 01:32:52,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 703 flow [2025-03-09 01:32:52,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 96 transitions, 583 flow, removed 45 selfloop flow, removed 5 redundant places. [2025-03-09 01:32:52,240 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 241 flow [2025-03-09 01:32:52,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=241, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2025-03-09 01:32:52,240 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2025-03-09 01:32:52,240 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 241 flow [2025-03-09 01:32:52,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:32:52,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:52,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:52,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:32:52,241 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:52,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:52,241 INFO L85 PathProgramCache]: Analyzing trace with hash -762232793, now seen corresponding path program 1 times [2025-03-09 01:32:52,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:52,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840707908] [2025-03-09 01:32:52,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:52,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 01:32:52,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 01:32:52,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:52,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:52,349 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 01:32:52,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840707908] [2025-03-09 01:32:52,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840707908] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:52,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055032379] [2025-03-09 01:32:52,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:52,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:52,352 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 01:32:52,365 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 01:32:52,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 01:32:52,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 01:32:52,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:52,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:52,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:32:52,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:52,456 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 01:32:52,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:52,507 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 01:32:52,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055032379] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:52,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:52,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-09 01:32:52,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388143900] [2025-03-09 01:32:52,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:52,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:32:52,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:52,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:32:52,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:32:52,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:52,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 241 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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 01:32:52,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:52,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:52,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:52,854 INFO L124 PetriNetUnfolderBase]: 649/1274 cut-off events. [2025-03-09 01:32:52,854 INFO L125 PetriNetUnfolderBase]: For 2141/2141 co-relation queries the response was YES. [2025-03-09 01:32:52,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1274 events. 649/1274 cut-off events. For 2141/2141 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6937 event pairs, 134 based on Foata normal form. 0/1230 useless extension candidates. Maximal degree in co-relation 2272. Up to 322 conditions per place. [2025-03-09 01:32:52,862 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 144 selfloop transitions, 22 changer transitions 0/174 dead transitions. [2025-03-09 01:32:52,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 174 transitions, 1207 flow [2025-03-09 01:32:52,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:32:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:32:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2025-03-09 01:32:52,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5121457489878543 [2025-03-09 01:32:52,865 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 241 flow. Second operand 13 states and 253 transitions. [2025-03-09 01:32:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 174 transitions, 1207 flow [2025-03-09 01:32:52,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 174 transitions, 1188 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-03-09 01:32:52,874 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 366 flow [2025-03-09 01:32:52,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=366, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2025-03-09 01:32:52,875 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2025-03-09 01:32:52,875 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 366 flow [2025-03-09 01:32:52,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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 01:32:52,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:52,876 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:52,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 01:32:53,080 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 01:32:53,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:53,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1661732332, now seen corresponding path program 1 times [2025-03-09 01:32:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285425732] [2025-03-09 01:32:53,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:53,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:32:53,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:32:53,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:53,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:53,147 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 01:32:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285425732] [2025-03-09 01:32:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285425732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:53,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:53,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:32:53,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708812538] [2025-03-09 01:32:53,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:53,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:32:53,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:53,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:32:53,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:32:53,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:53,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:32:53,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:53,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:53,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:53,337 INFO L124 PetriNetUnfolderBase]: 676/1341 cut-off events. [2025-03-09 01:32:53,337 INFO L125 PetriNetUnfolderBase]: For 4430/4430 co-relation queries the response was YES. [2025-03-09 01:32:53,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4668 conditions, 1341 events. 676/1341 cut-off events. For 4430/4430 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7413 event pairs, 170 based on Foata normal form. 18/1355 useless extension candidates. Maximal degree in co-relation 3002. Up to 519 conditions per place. [2025-03-09 01:32:53,344 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2025-03-09 01:32:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 744 flow [2025-03-09 01:32:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:32:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:32:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2025-03-09 01:32:53,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2025-03-09 01:32:53,345 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 366 flow. Second operand 6 states and 113 transitions. [2025-03-09 01:32:53,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 744 flow [2025-03-09 01:32:53,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 666 flow, removed 27 selfloop flow, removed 5 redundant places. [2025-03-09 01:32:53,357 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 354 flow [2025-03-09 01:32:53,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2025-03-09 01:32:53,358 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2025-03-09 01:32:53,358 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 354 flow [2025-03-09 01:32:53,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:32:53,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:53,358 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:53,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:32:53,358 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:53,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1628350555, now seen corresponding path program 1 times [2025-03-09 01:32:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:53,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669442078] [2025-03-09 01:32:53,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:53,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:32:53,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:32:53,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:53,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:53,422 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 01:32:53,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:53,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669442078] [2025-03-09 01:32:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669442078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:32:53,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:32:53,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:32:53,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296673617] [2025-03-09 01:32:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:32:53,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:32:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:53,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:32:53,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:32:53,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:32:53,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:53,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:53,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:53,617 INFO L124 PetriNetUnfolderBase]: 704/1402 cut-off events. [2025-03-09 01:32:53,617 INFO L125 PetriNetUnfolderBase]: For 4660/4660 co-relation queries the response was YES. [2025-03-09 01:32:53,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 1402 events. 704/1402 cut-off events. For 4660/4660 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7888 event pairs, 166 based on Foata normal form. 19/1415 useless extension candidates. Maximal degree in co-relation 2907. Up to 559 conditions per place. [2025-03-09 01:32:53,627 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 75 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2025-03-09 01:32:53,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 740 flow [2025-03-09 01:32:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:32:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:32:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-03-09 01:32:53,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2025-03-09 01:32:53,628 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 354 flow. Second operand 6 states and 117 transitions. [2025-03-09 01:32:53,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 740 flow [2025-03-09 01:32:53,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 710 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-09 01:32:53,640 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 373 flow [2025-03-09 01:32:53,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=373, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2025-03-09 01:32:53,641 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2025-03-09 01:32:53,641 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 373 flow [2025-03-09 01:32:53,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:32:53,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:53,641 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:53,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:32:53,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:53,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:53,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1762837083, now seen corresponding path program 2 times [2025-03-09 01:32:53,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:53,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930145317] [2025-03-09 01:32:53,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:53,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-09 01:32:53,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:32:53,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:53,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:53,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:53,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930145317] [2025-03-09 01:32:53,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930145317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:53,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193969419] [2025-03-09 01:32:53,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:53,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:53,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:53,744 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 01:32:53,745 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 01:32:53,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-03-09 01:32:53,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:32:53,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:53,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:53,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:32:53,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:53,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:53,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:53,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193969419] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:53,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:53,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-03-09 01:32:53,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868058312] [2025-03-09 01:32:53,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:53,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:32:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:53,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:32:53,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:32:53,955 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:53,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 373 flow. Second operand has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 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 01:32:53,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:53,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:53,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:54,630 INFO L124 PetriNetUnfolderBase]: 1094/2068 cut-off events. [2025-03-09 01:32:54,630 INFO L125 PetriNetUnfolderBase]: For 15599/15599 co-relation queries the response was YES. [2025-03-09 01:32:54,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7436 conditions, 2068 events. 1094/2068 cut-off events. For 15599/15599 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11412 event pairs, 143 based on Foata normal form. 264/2330 useless extension candidates. Maximal degree in co-relation 5588. Up to 385 conditions per place. [2025-03-09 01:32:54,644 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 297 selfloop transitions, 40 changer transitions 0/345 dead transitions. [2025-03-09 01:32:54,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 345 transitions, 2689 flow [2025-03-09 01:32:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 01:32:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 01:32:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 490 transitions. [2025-03-09 01:32:54,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2025-03-09 01:32:54,646 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 373 flow. Second operand 25 states and 490 transitions. [2025-03-09 01:32:54,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 345 transitions, 2689 flow [2025-03-09 01:32:54,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 345 transitions, 2558 flow, removed 55 selfloop flow, removed 3 redundant places. [2025-03-09 01:32:54,676 INFO L231 Difference]: Finished difference. Result has 110 places, 79 transitions, 660 flow [2025-03-09 01:32:54,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=660, PETRI_PLACES=110, PETRI_TRANSITIONS=79} [2025-03-09 01:32:54,678 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2025-03-09 01:32:54,678 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 79 transitions, 660 flow [2025-03-09 01:32:54,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.173913043478262) internal successors, (257), 23 states have internal predecessors, (257), 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 01:32:54,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:54,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:54,684 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 01:32:54,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:54,880 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:54,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:54,880 INFO L85 PathProgramCache]: Analyzing trace with hash 618942726, now seen corresponding path program 1 times [2025-03-09 01:32:54,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551853938] [2025-03-09 01:32:54,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:54,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:32:54,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:32:54,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:54,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:54,951 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 01:32:54,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551853938] [2025-03-09 01:32:54,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551853938] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:54,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39640145] [2025-03-09 01:32:54,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:54,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:54,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:54,954 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 01:32:54,956 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 01:32:54,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:32:54,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:32:54,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:54,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:54,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:32:54,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:55,036 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 01:32:55,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:55,083 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 01:32:55,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39640145] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:55,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:55,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-09 01:32:55,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558572809] [2025-03-09 01:32:55,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:55,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:32:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:55,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:32:55,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:32:55,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:55,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 79 transitions, 660 flow. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 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 01:32:55,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:55,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:55,445 INFO L124 PetriNetUnfolderBase]: 1175/2227 cut-off events. [2025-03-09 01:32:55,445 INFO L125 PetriNetUnfolderBase]: For 24710/24710 co-relation queries the response was YES. [2025-03-09 01:32:55,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9303 conditions, 2227 events. 1175/2227 cut-off events. For 24710/24710 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12620 event pairs, 265 based on Foata normal form. 54/2279 useless extension candidates. Maximal degree in co-relation 6912. Up to 876 conditions per place. [2025-03-09 01:32:55,457 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 119 selfloop transitions, 24 changer transitions 0/151 dead transitions. [2025-03-09 01:32:55,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1475 flow [2025-03-09 01:32:55,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:32:55,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:32:55,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2025-03-09 01:32:55,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2025-03-09 01:32:55,459 INFO L175 Difference]: Start difference. First operand has 110 places, 79 transitions, 660 flow. Second operand 9 states and 166 transitions. [2025-03-09 01:32:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1475 flow [2025-03-09 01:32:55,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 151 transitions, 1235 flow, removed 84 selfloop flow, removed 12 redundant places. [2025-03-09 01:32:55,504 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 584 flow [2025-03-09 01:32:55,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=584, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2025-03-09 01:32:55,507 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 73 predicate places. [2025-03-09 01:32:55,507 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 584 flow [2025-03-09 01:32:55,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 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 01:32:55,507 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:55,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:55,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 01:32:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:55,708 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:55,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1061726196, now seen corresponding path program 1 times [2025-03-09 01:32:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925926108] [2025-03-09 01:32:55,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:55,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:32:55,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:32:55,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:55,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:55,761 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 01:32:55,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925926108] [2025-03-09 01:32:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925926108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975082717] [2025-03-09 01:32:55,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:32:55,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:55,763 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 01:32:55,765 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 01:32:55,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 01:32:55,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 01:32:55,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:32:55,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:55,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 01:32:55,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:55,839 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 01:32:55,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:55,888 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 01:32:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975082717] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:55,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:55,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-03-09 01:32:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368462087] [2025-03-09 01:32:55,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:55,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-09 01:32:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:55,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-09 01:32:55,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-03-09 01:32:55,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:55,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 584 flow. Second operand has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 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 01:32:55,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:55,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:55,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:56,218 INFO L124 PetriNetUnfolderBase]: 1313/2448 cut-off events. [2025-03-09 01:32:56,218 INFO L125 PetriNetUnfolderBase]: For 21094/21094 co-relation queries the response was YES. [2025-03-09 01:32:56,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9203 conditions, 2448 events. 1313/2448 cut-off events. For 21094/21094 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13868 event pairs, 146 based on Foata normal form. 93/2539 useless extension candidates. Maximal degree in co-relation 6370. Up to 964 conditions per place. [2025-03-09 01:32:56,234 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 147 selfloop transitions, 24 changer transitions 0/179 dead transitions. [2025-03-09 01:32:56,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 179 transitions, 1582 flow [2025-03-09 01:32:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:32:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:32:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2025-03-09 01:32:56,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2025-03-09 01:32:56,237 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 584 flow. Second operand 9 states and 173 transitions. [2025-03-09 01:32:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 179 transitions, 1582 flow [2025-03-09 01:32:56,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 179 transitions, 1504 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-03-09 01:32:56,280 INFO L231 Difference]: Finished difference. Result has 115 places, 85 transitions, 604 flow [2025-03-09 01:32:56,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=115, PETRI_TRANSITIONS=85} [2025-03-09 01:32:56,281 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2025-03-09 01:32:56,282 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 85 transitions, 604 flow [2025-03-09 01:32:56,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.857142857142858) internal successors, (166), 14 states have internal predecessors, (166), 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 01:32:56,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:56,282 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:56,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 01:32:56,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:56,483 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:56,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:56,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1163990368, now seen corresponding path program 2 times [2025-03-09 01:32:56,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258802039] [2025-03-09 01:32:56,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:56,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 01:32:56,491 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:32:56,491 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:56,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:56,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258802039] [2025-03-09 01:32:56,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258802039] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:56,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667841158] [2025-03-09 01:32:56,571 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:56,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:56,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:56,573 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 01:32:56,575 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 01:32:56,604 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-03-09 01:32:56,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:32:56,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:56,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:56,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:32:56,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:56,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667841158] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:56,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-03-09 01:32:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435186718] [2025-03-09 01:32:56,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:56,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:32:56,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:56,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:32:56,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:32:56,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:56,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 85 transitions, 604 flow. Second operand has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 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 01:32:56,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:56,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:56,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:57,491 INFO L124 PetriNetUnfolderBase]: 1973/3637 cut-off events. [2025-03-09 01:32:57,492 INFO L125 PetriNetUnfolderBase]: For 59123/59123 co-relation queries the response was YES. [2025-03-09 01:32:57,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14469 conditions, 3637 events. 1973/3637 cut-off events. For 59123/59123 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21290 event pairs, 348 based on Foata normal form. 444/4079 useless extension candidates. Maximal degree in co-relation 11311. Up to 822 conditions per place. [2025-03-09 01:32:57,514 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 468 selfloop transitions, 46 changer transitions 0/522 dead transitions. [2025-03-09 01:32:57,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 522 transitions, 4531 flow [2025-03-09 01:32:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 01:32:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 01:32:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 487 transitions. [2025-03-09 01:32:57,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5126315789473684 [2025-03-09 01:32:57,519 INFO L175 Difference]: Start difference. First operand has 115 places, 85 transitions, 604 flow. Second operand 25 states and 487 transitions. [2025-03-09 01:32:57,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 522 transitions, 4531 flow [2025-03-09 01:32:57,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 522 transitions, 4421 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-03-09 01:32:57,591 INFO L231 Difference]: Finished difference. Result has 146 places, 103 transitions, 868 flow [2025-03-09 01:32:57,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=868, PETRI_PLACES=146, PETRI_TRANSITIONS=103} [2025-03-09 01:32:57,592 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 110 predicate places. [2025-03-09 01:32:57,592 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 103 transitions, 868 flow [2025-03-09 01:32:57,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.347826086956522) internal successors, (261), 23 states have internal predecessors, (261), 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 01:32:57,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:57,592 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:57,598 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 01:32:57,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:57,794 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:57,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash -663147522, now seen corresponding path program 2 times [2025-03-09 01:32:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883838374] [2025-03-09 01:32:57,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:57,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:32:57,803 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:32:57,803 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:57,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883838374] [2025-03-09 01:32:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883838374] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7939719] [2025-03-09 01:32:57,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:57,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:57,878 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 01:32:57,879 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 01:32:57,909 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:32:57,917 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:32:57,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:57,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:57,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:32:57,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:57,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7939719] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:58,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-03-09 01:32:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681889810] [2025-03-09 01:32:58,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:58,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:32:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:58,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:32:58,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:32:58,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:58,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 103 transitions, 868 flow. Second operand has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 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 01:32:58,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:58,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:32:58,693 INFO L124 PetriNetUnfolderBase]: 2243/4051 cut-off events. [2025-03-09 01:32:58,693 INFO L125 PetriNetUnfolderBase]: For 93637/93637 co-relation queries the response was YES. [2025-03-09 01:32:58,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18744 conditions, 4051 events. 2243/4051 cut-off events. For 93637/93637 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23777 event pairs, 280 based on Foata normal form. 180/4229 useless extension candidates. Maximal degree in co-relation 14006. Up to 1581 conditions per place. [2025-03-09 01:32:58,715 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 254 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-03-09 01:32:58,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 298 transitions, 3465 flow [2025-03-09 01:32:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 01:32:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 01:32:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 271 transitions. [2025-03-09 01:32:58,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47543859649122805 [2025-03-09 01:32:58,718 INFO L175 Difference]: Start difference. First operand has 146 places, 103 transitions, 868 flow. Second operand 15 states and 271 transitions. [2025-03-09 01:32:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 298 transitions, 3465 flow [2025-03-09 01:32:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 298 transitions, 2673 flow, removed 312 selfloop flow, removed 12 redundant places. [2025-03-09 01:32:58,858 INFO L231 Difference]: Finished difference. Result has 154 places, 109 transitions, 846 flow [2025-03-09 01:32:58,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=846, PETRI_PLACES=154, PETRI_TRANSITIONS=109} [2025-03-09 01:32:58,859 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 118 predicate places. [2025-03-09 01:32:58,859 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 109 transitions, 846 flow [2025-03-09 01:32:58,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 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 01:32:58,859 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:32:58,860 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:32:58,866 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 01:32:59,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:59,060 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:32:59,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:32:59,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1570081947, now seen corresponding path program 2 times [2025-03-09 01:32:59,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:32:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450037334] [2025-03-09 01:32:59,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:32:59,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:32:59,068 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:32:59,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:59,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:59,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:32:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450037334] [2025-03-09 01:32:59,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450037334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:32:59,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944795263] [2025-03-09 01:32:59,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:32:59,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:32:59,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:32:59,156 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 01:32:59,158 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 01:32:59,193 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 01:32:59,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 01:32:59,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:32:59,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:32:59,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:32:59,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:32:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:59,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:32:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:32:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944795263] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:32:59,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:32:59,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-03-09 01:32:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127212868] [2025-03-09 01:32:59,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:32:59,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 01:32:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:32:59,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 01:32:59,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-03-09 01:32:59,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:32:59,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 109 transitions, 846 flow. Second operand has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 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 01:32:59,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:32:59,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:32:59,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:00,055 INFO L124 PetriNetUnfolderBase]: 2519/4497 cut-off events. [2025-03-09 01:33:00,056 INFO L125 PetriNetUnfolderBase]: For 110994/110994 co-relation queries the response was YES. [2025-03-09 01:33:00,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19191 conditions, 4497 events. 2519/4497 cut-off events. For 110994/110994 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26366 event pairs, 296 based on Foata normal form. 186/4683 useless extension candidates. Maximal degree in co-relation 14315. Up to 2026 conditions per place. [2025-03-09 01:33:00,083 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 273 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2025-03-09 01:33:00,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 317 transitions, 3056 flow [2025-03-09 01:33:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 01:33:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 01:33:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2025-03-09 01:33:00,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4982456140350877 [2025-03-09 01:33:00,086 INFO L175 Difference]: Start difference. First operand has 154 places, 109 transitions, 846 flow. Second operand 15 states and 284 transitions. [2025-03-09 01:33:00,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 317 transitions, 3056 flow [2025-03-09 01:33:00,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 317 transitions, 2916 flow, removed 37 selfloop flow, removed 8 redundant places. [2025-03-09 01:33:00,243 INFO L231 Difference]: Finished difference. Result has 166 places, 115 transitions, 882 flow [2025-03-09 01:33:00,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=882, PETRI_PLACES=166, PETRI_TRANSITIONS=115} [2025-03-09 01:33:00,244 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 130 predicate places. [2025-03-09 01:33:00,244 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 115 transitions, 882 flow [2025-03-09 01:33:00,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.521739130434783) internal successors, (265), 23 states have internal predecessors, (265), 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 01:33:00,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:00,244 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:00,251 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 01:33:00,444 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,SelfDestructingSolverStorable11 [2025-03-09 01:33:00,445 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:00,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:00,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1476336549, now seen corresponding path program 3 times [2025-03-09 01:33:00,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:00,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93927902] [2025-03-09 01:33:00,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:00,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:00,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-03-09 01:33:00,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-03-09 01:33:00,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:33:00,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 01:33:00,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:00,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93927902] [2025-03-09 01:33:00,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93927902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:00,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368378079] [2025-03-09 01:33:00,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:00,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:00,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:00,524 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 01:33:00,526 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 01:33:00,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 6 equivalence classes. [2025-03-09 01:33:00,562 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 19 statements. [2025-03-09 01:33:00,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:33:00,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:00,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:33:00,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 01:33:00,600 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:33:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368378079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:33:00,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:33:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-09 01:33:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411035645] [2025-03-09 01:33:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:33:00,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:33:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:00,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:33:00,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:33:00,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:00,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 115 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:33:00,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:00,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:01,104 INFO L124 PetriNetUnfolderBase]: 2586/4680 cut-off events. [2025-03-09 01:33:01,104 INFO L125 PetriNetUnfolderBase]: For 100954/100954 co-relation queries the response was YES. [2025-03-09 01:33:01,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20470 conditions, 4680 events. 2586/4680 cut-off events. For 100954/100954 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 27881 event pairs, 698 based on Foata normal form. 86/4764 useless extension candidates. Maximal degree in co-relation 14894. Up to 1617 conditions per place. [2025-03-09 01:33:01,127 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 228 selfloop transitions, 32 changer transitions 0/268 dead transitions. [2025-03-09 01:33:01,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 268 transitions, 2785 flow [2025-03-09 01:33:01,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:33:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:33:01,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2025-03-09 01:33:01,130 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2025-03-09 01:33:01,130 INFO L175 Difference]: Start difference. First operand has 166 places, 115 transitions, 882 flow. Second operand 9 states and 184 transitions. [2025-03-09 01:33:01,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 268 transitions, 2785 flow [2025-03-09 01:33:01,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 268 transitions, 2395 flow, removed 148 selfloop flow, removed 8 redundant places. [2025-03-09 01:33:01,285 INFO L231 Difference]: Finished difference. Result has 168 places, 121 transitions, 974 flow [2025-03-09 01:33:01,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=974, PETRI_PLACES=168, PETRI_TRANSITIONS=121} [2025-03-09 01:33:01,285 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 132 predicate places. [2025-03-09 01:33:01,286 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 121 transitions, 974 flow [2025-03-09 01:33:01,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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 01:33:01,286 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:01,286 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:01,291 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 01:33:01,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 01:33:01,486 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:01,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:01,487 INFO L85 PathProgramCache]: Analyzing trace with hash -681038528, now seen corresponding path program 3 times [2025-03-09 01:33:01,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:01,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281005428] [2025-03-09 01:33:01,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:01,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:01,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-03-09 01:33:01,500 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-03-09 01:33:01,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:33:01,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 01:33:01,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281005428] [2025-03-09 01:33:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281005428] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019923290] [2025-03-09 01:33:01,563 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:01,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:01,565 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 01:33:01,566 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 01:33:01,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-03-09 01:33:01,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-03-09 01:33:01,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:33:01,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:01,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:33:01,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:01,633 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-09 01:33:01,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 01:33:01,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019923290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:33:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 01:33:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-09 01:33:01,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753886808] [2025-03-09 01:33:01,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:33:01,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:33:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:01,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:33:01,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-09 01:33:01,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:01,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 121 transitions, 974 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:33:01,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:01,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:01,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:02,085 INFO L124 PetriNetUnfolderBase]: 2623/4641 cut-off events. [2025-03-09 01:33:02,085 INFO L125 PetriNetUnfolderBase]: For 117625/117625 co-relation queries the response was YES. [2025-03-09 01:33:02,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20868 conditions, 4641 events. 2623/4641 cut-off events. For 117625/117625 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26921 event pairs, 680 based on Foata normal form. 91/4730 useless extension candidates. Maximal degree in co-relation 19281. Up to 1736 conditions per place. [2025-03-09 01:33:02,110 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 229 selfloop transitions, 34 changer transitions 0/271 dead transitions. [2025-03-09 01:33:02,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 271 transitions, 2824 flow [2025-03-09 01:33:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:33:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:33:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2025-03-09 01:33:02,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2025-03-09 01:33:02,111 INFO L175 Difference]: Start difference. First operand has 168 places, 121 transitions, 974 flow. Second operand 9 states and 177 transitions. [2025-03-09 01:33:02,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 271 transitions, 2824 flow [2025-03-09 01:33:02,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 271 transitions, 2370 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-03-09 01:33:02,370 INFO L231 Difference]: Finished difference. Result has 176 places, 127 transitions, 1093 flow [2025-03-09 01:33:02,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1093, PETRI_PLACES=176, PETRI_TRANSITIONS=127} [2025-03-09 01:33:02,370 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 140 predicate places. [2025-03-09 01:33:02,370 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 127 transitions, 1093 flow [2025-03-09 01:33:02,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 01:33:02,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:02,371 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:02,376 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 01:33:02,571 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,SelfDestructingSolverStorable13 [2025-03-09 01:33:02,571 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:02,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1792248620, now seen corresponding path program 3 times [2025-03-09 01:33:02,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:02,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171740371] [2025-03-09 01:33:02,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:02,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:02,575 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-03-09 01:33:02,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:33:02,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 01:33:02,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:02,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:02,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171740371] [2025-03-09 01:33:02,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171740371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:02,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665267420] [2025-03-09 01:33:02,746 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:02,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:02,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:02,748 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 01:33:02,749 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 01:33:02,779 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-03-09 01:33:02,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:33:02,791 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 01:33:02,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:02,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:33:02,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:02,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665267420] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:03,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-03-09 01:33:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461036674] [2025-03-09 01:33:03,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:03,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-09 01:33:03,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:03,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-09 01:33:03,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-03-09 01:33:03,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:03,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 127 transitions, 1093 flow. Second operand has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 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 01:33:03,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:03,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:03,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:04,138 INFO L124 PetriNetUnfolderBase]: 3127/5509 cut-off events. [2025-03-09 01:33:04,138 INFO L125 PetriNetUnfolderBase]: For 105290/105290 co-relation queries the response was YES. [2025-03-09 01:33:04,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23814 conditions, 5509 events. 3127/5509 cut-off events. For 105290/105290 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 31348 event pairs, 540 based on Foata normal form. 336/5845 useless extension candidates. Maximal degree in co-relation 22952. Up to 2128 conditions per place. [2025-03-09 01:33:04,165 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 431 selfloop transitions, 52 changer transitions 0/491 dead transitions. [2025-03-09 01:33:04,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 491 transitions, 5182 flow [2025-03-09 01:33:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 01:33:04,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-09 01:33:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 456 transitions. [2025-03-09 01:33:04,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-09 01:33:04,167 INFO L175 Difference]: Start difference. First operand has 176 places, 127 transitions, 1093 flow. Second operand 27 states and 456 transitions. [2025-03-09 01:33:04,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 491 transitions, 5182 flow [2025-03-09 01:33:04,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 491 transitions, 4187 flow, removed 473 selfloop flow, removed 2 redundant places. [2025-03-09 01:33:04,310 INFO L231 Difference]: Finished difference. Result has 212 places, 139 transitions, 1276 flow [2025-03-09 01:33:04,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1276, PETRI_PLACES=212, PETRI_TRANSITIONS=139} [2025-03-09 01:33:04,310 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 176 predicate places. [2025-03-09 01:33:04,310 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 139 transitions, 1276 flow [2025-03-09 01:33:04,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 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 01:33:04,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:04,310 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:04,316 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 01:33:04,511 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,SelfDestructingSolverStorable14 [2025-03-09 01:33:04,511 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:04,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1830934789, now seen corresponding path program 3 times [2025-03-09 01:33:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:04,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550256920] [2025-03-09 01:33:04,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:04,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:04,514 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-03-09 01:33:04,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:33:04,518 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 01:33:04,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:04,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550256920] [2025-03-09 01:33:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550256920] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:04,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885096651] [2025-03-09 01:33:04,663 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:33:04,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:04,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:04,665 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 01:33:04,666 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 01:33:04,694 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 6 equivalence classes. [2025-03-09 01:33:04,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:33:04,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-09 01:33:04,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:04,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:33:04,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:04,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:05,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885096651] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:05,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-03-09 01:33:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182837513] [2025-03-09 01:33:05,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:05,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-09 01:33:05,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:05,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-09 01:33:05,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-03-09 01:33:05,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:05,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 139 transitions, 1276 flow. Second operand has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 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 01:33:05,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:05,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:05,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:06,015 INFO L124 PetriNetUnfolderBase]: 3643/6378 cut-off events. [2025-03-09 01:33:06,016 INFO L125 PetriNetUnfolderBase]: For 52588/52588 co-relation queries the response was YES. [2025-03-09 01:33:06,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26721 conditions, 6378 events. 3643/6378 cut-off events. For 52588/52588 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 36381 event pairs, 812 based on Foata normal form. 348/6726 useless extension candidates. Maximal degree in co-relation 25884. Up to 2971 conditions per place. [2025-03-09 01:33:06,048 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 468 selfloop transitions, 52 changer transitions 0/528 dead transitions. [2025-03-09 01:33:06,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 528 transitions, 4638 flow [2025-03-09 01:33:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-09 01:33:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-09 01:33:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 481 transitions. [2025-03-09 01:33:06,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46881091617933723 [2025-03-09 01:33:06,049 INFO L175 Difference]: Start difference. First operand has 212 places, 139 transitions, 1276 flow. Second operand 27 states and 481 transitions. [2025-03-09 01:33:06,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 528 transitions, 4638 flow [2025-03-09 01:33:06,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 528 transitions, 4406 flow, removed 73 selfloop flow, removed 14 redundant places. [2025-03-09 01:33:06,178 INFO L231 Difference]: Finished difference. Result has 236 places, 151 transitions, 1348 flow [2025-03-09 01:33:06,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1348, PETRI_PLACES=236, PETRI_TRANSITIONS=151} [2025-03-09 01:33:06,179 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 200 predicate places. [2025-03-09 01:33:06,179 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 151 transitions, 1348 flow [2025-03-09 01:33:06,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 11.292682926829269) internal successors, (463), 41 states have internal predecessors, (463), 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 01:33:06,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:06,179 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:06,186 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 01:33:06,379 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,SelfDestructingSolverStorable15 [2025-03-09 01:33:06,379 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:06,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:06,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2032470836, now seen corresponding path program 4 times [2025-03-09 01:33:06,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:06,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948080250] [2025-03-09 01:33:06,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:33:06,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:06,383 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-09 01:33:06,390 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:33:06,390 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:33:06,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948080250] [2025-03-09 01:33:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948080250] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528411579] [2025-03-09 01:33:06,765 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:33:06,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:06,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:06,767 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 01:33:06,768 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 01:33:06,801 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-09 01:33:06,813 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:33:06,813 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:33:06,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:06,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-09 01:33:06,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:07,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528411579] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:07,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 27] total 77 [2025-03-09 01:33:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143442299] [2025-03-09 01:33:07,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:07,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-03-09 01:33:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:07,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-03-09 01:33:07,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-03-09 01:33:07,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:07,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 151 transitions, 1348 flow. Second operand has 78 states, 78 states have (on average 11.166666666666666) internal successors, (871), 78 states have internal predecessors, (871), 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 01:33:07,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:07,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:07,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:10,256 INFO L124 PetriNetUnfolderBase]: 4651/8056 cut-off events. [2025-03-09 01:33:10,257 INFO L125 PetriNetUnfolderBase]: For 205344/205344 co-relation queries the response was YES. [2025-03-09 01:33:10,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33935 conditions, 8056 events. 4651/8056 cut-off events. For 205344/205344 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 43644 event pairs, 864 based on Foata normal form. 672/8728 useless extension candidates. Maximal degree in co-relation 33086. Up to 2992 conditions per place. [2025-03-09 01:33:10,302 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 803 selfloop transitions, 76 changer transitions 0/887 dead transitions. [2025-03-09 01:33:10,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 887 transitions, 7659 flow [2025-03-09 01:33:10,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-09 01:33:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-03-09 01:33:10,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 852 transitions. [2025-03-09 01:33:10,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43962848297213625 [2025-03-09 01:33:10,303 INFO L175 Difference]: Start difference. First operand has 236 places, 151 transitions, 1348 flow. Second operand 51 states and 852 transitions. [2025-03-09 01:33:10,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 887 transitions, 7659 flow [2025-03-09 01:33:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 887 transitions, 7427 flow, removed 73 selfloop flow, removed 14 redundant places. [2025-03-09 01:33:10,518 INFO L231 Difference]: Finished difference. Result has 296 places, 175 transitions, 1660 flow [2025-03-09 01:33:10,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1660, PETRI_PLACES=296, PETRI_TRANSITIONS=175} [2025-03-09 01:33:10,518 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 260 predicate places. [2025-03-09 01:33:10,518 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 175 transitions, 1660 flow [2025-03-09 01:33:10,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 11.166666666666666) internal successors, (871), 78 states have internal predecessors, (871), 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 01:33:10,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:10,519 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:10,524 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 01:33:10,720 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,SelfDestructingSolverStorable16 [2025-03-09 01:33:10,720 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:10,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:10,721 INFO L85 PathProgramCache]: Analyzing trace with hash -730496069, now seen corresponding path program 4 times [2025-03-09 01:33:10,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:10,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145543522] [2025-03-09 01:33:10,721 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:33:10,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:10,725 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-09 01:33:10,731 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:33:10,731 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:33:10,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:11,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145543522] [2025-03-09 01:33:11,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145543522] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:11,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727614066] [2025-03-09 01:33:11,086 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:33:11,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:11,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:11,088 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 01:33:11,089 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 01:33:11,117 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 35 statements into 2 equivalence classes. [2025-03-09 01:33:11,130 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-03-09 01:33:11,130 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:33:11,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:11,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-09 01:33:11,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:11,430 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:11,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:12,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727614066] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:12,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:12,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2025-03-09 01:33:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932119208] [2025-03-09 01:33:12,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:12,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-03-09 01:33:12,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:12,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-03-09 01:33:12,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-03-09 01:33:12,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:12,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 175 transitions, 1660 flow. Second operand has 78 states, 78 states have (on average 11.179487179487179) internal successors, (872), 78 states have internal predecessors, (872), 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 01:33:12,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:12,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:14,717 INFO L124 PetriNetUnfolderBase]: 5683/9786 cut-off events. [2025-03-09 01:33:14,717 INFO L125 PetriNetUnfolderBase]: For 237918/237918 co-relation queries the response was YES. [2025-03-09 01:33:14,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42585 conditions, 9786 events. 5683/9786 cut-off events. For 237918/237918 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 53499 event pairs, 1436 based on Foata normal form. 696/10482 useless extension candidates. Maximal degree in co-relation 41712. Up to 4651 conditions per place. [2025-03-09 01:33:14,802 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 876 selfloop transitions, 76 changer transitions 0/960 dead transitions. [2025-03-09 01:33:14,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 960 transitions, 8262 flow [2025-03-09 01:33:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-09 01:33:14,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-03-09 01:33:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 901 transitions. [2025-03-09 01:33:14,804 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2025-03-09 01:33:14,804 INFO L175 Difference]: Start difference. First operand has 296 places, 175 transitions, 1660 flow. Second operand 51 states and 901 transitions. [2025-03-09 01:33:14,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 960 transitions, 8262 flow [2025-03-09 01:33:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 960 transitions, 7862 flow, removed 145 selfloop flow, removed 26 redundant places. [2025-03-09 01:33:15,179 INFO L231 Difference]: Finished difference. Result has 344 places, 199 transitions, 1804 flow [2025-03-09 01:33:15,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1804, PETRI_PLACES=344, PETRI_TRANSITIONS=199} [2025-03-09 01:33:15,180 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 308 predicate places. [2025-03-09 01:33:15,180 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 199 transitions, 1804 flow [2025-03-09 01:33:15,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 11.179487179487179) internal successors, (872), 78 states have internal predecessors, (872), 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 01:33:15,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:15,180 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:15,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 01:33:15,381 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 01:33:15,381 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:15,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash -432663661, now seen corresponding path program 1 times [2025-03-09 01:33:15,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:15,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127961419] [2025-03-09 01:33:15,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:33:15,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:15,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-09 01:33:15,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-09 01:33:15,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:33:15,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-03-09 01:33:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127961419] [2025-03-09 01:33:15,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127961419] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:33:15,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:33:15,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 01:33:15,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475842506] [2025-03-09 01:33:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:33:15,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:33:15,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:15,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:33:15,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:33:15,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-09 01:33:15,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 199 transitions, 1804 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 01:33:15,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:15,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-09 01:33:15,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:16,730 INFO L124 PetriNetUnfolderBase]: 5683/9795 cut-off events. [2025-03-09 01:33:16,730 INFO L125 PetriNetUnfolderBase]: For 100287/100287 co-relation queries the response was YES. [2025-03-09 01:33:16,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40702 conditions, 9795 events. 5683/9795 cut-off events. For 100287/100287 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 53411 event pairs, 4617 based on Foata normal form. 4/9795 useless extension candidates. Maximal degree in co-relation 39805. Up to 9518 conditions per place. [2025-03-09 01:33:16,797 INFO L140 encePairwiseOnDemand]: 36/38 looper letters, 139 selfloop transitions, 1 changer transitions 52/198 dead transitions. [2025-03-09 01:33:16,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 198 transitions, 2184 flow [2025-03-09 01:33:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:33:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:33:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2025-03-09 01:33:16,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2025-03-09 01:33:16,797 INFO L175 Difference]: Start difference. First operand has 344 places, 199 transitions, 1804 flow. Second operand 3 states and 49 transitions. [2025-03-09 01:33:16,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 198 transitions, 2184 flow [2025-03-09 01:33:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 198 transitions, 1790 flow, removed 145 selfloop flow, removed 26 redundant places. [2025-03-09 01:33:17,147 INFO L231 Difference]: Finished difference. Result has 319 places, 146 transitions, 875 flow [2025-03-09 01:33:17,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=875, PETRI_PLACES=319, PETRI_TRANSITIONS=146} [2025-03-09 01:33:17,148 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 283 predicate places. [2025-03-09 01:33:17,148 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 146 transitions, 875 flow [2025-03-09 01:33:17,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 01:33:17,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:17,148 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:17,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 01:33:17,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:17,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1825291966, now seen corresponding path program 5 times [2025-03-09 01:33:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305224470] [2025-03-09 01:33:17,149 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:33:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:17,153 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-03-09 01:33:17,163 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 01:33:17,163 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-09 01:33:17,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:18,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305224470] [2025-03-09 01:33:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305224470] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:18,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959959019] [2025-03-09 01:33:18,118 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:33:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:18,120 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 01:33:18,120 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 01:33:18,150 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-03-09 01:33:18,169 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 01:33:18,169 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-09 01:33:18,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:18,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-09 01:33:18,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:19,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959959019] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:21,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-03-09 01:33:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615931936] [2025-03-09 01:33:21,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:21,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-03-09 01:33:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:21,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-03-09 01:33:21,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-03-09 01:33:21,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:21,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 146 transitions, 875 flow. Second operand has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 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 01:33:21,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:21,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:21,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:28,914 INFO L124 PetriNetUnfolderBase]: 6428/10982 cut-off events. [2025-03-09 01:33:28,915 INFO L125 PetriNetUnfolderBase]: For 1498088/1498088 co-relation queries the response was YES. [2025-03-09 01:33:28,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43832 conditions, 10982 events. 6428/10982 cut-off events. For 1498088/1498088 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 53335 event pairs, 1446 based on Foata normal form. 1344/12326 useless extension candidates. Maximal degree in co-relation 43689. Up to 3684 conditions per place. [2025-03-09 01:33:29,004 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1503 selfloop transitions, 100 changer transitions 15/1624 dead transitions. [2025-03-09 01:33:29,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1624 transitions, 13260 flow [2025-03-09 01:33:29,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-03-09 01:33:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-03-09 01:33:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1639 transitions. [2025-03-09 01:33:29,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2025-03-09 01:33:29,006 INFO L175 Difference]: Start difference. First operand has 319 places, 146 transitions, 875 flow. Second operand 99 states and 1639 transitions. [2025-03-09 01:33:29,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1624 transitions, 13260 flow [2025-03-09 01:33:29,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1624 transitions, 12763 flow, removed 248 selfloop flow, removed 5 redundant places. [2025-03-09 01:33:29,314 INFO L231 Difference]: Finished difference. Result has 434 places, 194 transitions, 1728 flow [2025-03-09 01:33:29,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1728, PETRI_PLACES=434, PETRI_TRANSITIONS=194} [2025-03-09 01:33:29,315 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 398 predicate places. [2025-03-09 01:33:29,315 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 194 transitions, 1728 flow [2025-03-09 01:33:29,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 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 01:33:29,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:29,316 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:29,322 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 01:33:29,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:29,516 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:29,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:29,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1868243653, now seen corresponding path program 5 times [2025-03-09 01:33:29,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:29,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311514212] [2025-03-09 01:33:29,517 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:33:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:29,525 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-03-09 01:33:29,536 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 01:33:29,536 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-09 01:33:29,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:30,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:30,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311514212] [2025-03-09 01:33:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311514212] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:30,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232684892] [2025-03-09 01:33:30,475 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:33:30,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:30,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:30,476 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 01:33:30,477 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 01:33:30,508 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 59 statements into 24 equivalence classes. [2025-03-09 01:33:30,526 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 59 of 59 statements. [2025-03-09 01:33:30,526 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-03-09 01:33:30,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:30,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-03-09 01:33:30,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:31,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:31,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232684892] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:33,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-03-09 01:33:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996146814] [2025-03-09 01:33:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:33,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-03-09 01:33:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:33,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-03-09 01:33:33,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-03-09 01:33:33,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:33,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 194 transitions, 1728 flow. Second operand has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 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 01:33:33,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:33,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:33:41,665 INFO L124 PetriNetUnfolderBase]: 8492/14440 cut-off events. [2025-03-09 01:33:41,665 INFO L125 PetriNetUnfolderBase]: For 1636538/1636538 co-relation queries the response was YES. [2025-03-09 01:33:41,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62337 conditions, 14440 events. 8492/14440 cut-off events. For 1636538/1636538 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 73148 event pairs, 2618 based on Foata normal form. 1392/15832 useless extension candidates. Maximal degree in co-relation 62150. Up to 6946 conditions per place. [2025-03-09 01:33:41,813 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1649 selfloop transitions, 100 changer transitions 14/1769 dead transitions. [2025-03-09 01:33:41,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1769 transitions, 14222 flow [2025-03-09 01:33:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-03-09 01:33:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-03-09 01:33:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1736 transitions. [2025-03-09 01:33:41,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4614566719829878 [2025-03-09 01:33:41,820 INFO L175 Difference]: Start difference. First operand has 434 places, 194 transitions, 1728 flow. Second operand 99 states and 1736 transitions. [2025-03-09 01:33:41,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1769 transitions, 14222 flow [2025-03-09 01:33:42,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1769 transitions, 13630 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-03-09 01:33:42,821 INFO L231 Difference]: Finished difference. Result has 530 places, 242 transitions, 2016 flow [2025-03-09 01:33:42,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2016, PETRI_PLACES=530, PETRI_TRANSITIONS=242} [2025-03-09 01:33:42,821 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 494 predicate places. [2025-03-09 01:33:42,821 INFO L471 AbstractCegarLoop]: Abstraction has has 530 places, 242 transitions, 2016 flow [2025-03-09 01:33:42,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 11.080536912751677) internal successors, (1651), 149 states have internal predecessors, (1651), 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 01:33:42,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:33:42,822 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:33:42,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-09 01:33:43,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:43,022 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:33:43,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:33:43,023 INFO L85 PathProgramCache]: Analyzing trace with hash 482311220, now seen corresponding path program 6 times [2025-03-09 01:33:43,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:33:43,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083283733] [2025-03-09 01:33:43,023 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:33:43,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:33:43,029 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-03-09 01:33:43,049 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-03-09 01:33:43,049 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-09 01:33:43,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:46,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:33:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083283733] [2025-03-09 01:33:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083283733] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:33:46,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112829428] [2025-03-09 01:33:46,341 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:33:46,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:33:46,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:33:46,342 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 01:33:46,343 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 01:33:46,378 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-03-09 01:33:46,418 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-03-09 01:33:46,418 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-09 01:33:46,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:33:46,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-03-09 01:33:46,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:33:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:49,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:33:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:33:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112829428] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:33:52,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:33:52,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2025-03-09 01:33:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456014395] [2025-03-09 01:33:52,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:33:52,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2025-03-09 01:33:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:33:52,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2025-03-09 01:33:52,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2025-03-09 01:33:52,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:33:52,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 242 transitions, 2016 flow. Second operand has 204 states, 204 states have (on average 11.063725490196079) internal successors, (2257), 204 states have internal predecessors, (2257), 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 01:33:52,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:33:52,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:33:52,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:34:04,548 INFO L124 PetriNetUnfolderBase]: 8786/14928 cut-off events. [2025-03-09 01:34:04,548 INFO L125 PetriNetUnfolderBase]: For 1156857/1156857 co-relation queries the response was YES. [2025-03-09 01:34:04,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62046 conditions, 14928 events. 8786/14928 cut-off events. For 1156857/1156857 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 75490 event pairs, 2742 based on Foata normal form. 196/15124 useless extension candidates. Maximal degree in co-relation 61811. Up to 7140 conditions per place. [2025-03-09 01:34:04,733 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 1656 selfloop transitions, 107 changer transitions 15/1784 dead transitions. [2025-03-09 01:34:04,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1784 transitions, 14443 flow [2025-03-09 01:34:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-03-09 01:34:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-03-09 01:34:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1710 transitions. [2025-03-09 01:34:04,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42452830188679247 [2025-03-09 01:34:04,735 INFO L175 Difference]: Start difference. First operand has 530 places, 242 transitions, 2016 flow. Second operand 106 states and 1710 transitions. [2025-03-09 01:34:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1784 transitions, 14443 flow [2025-03-09 01:34:06,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1784 transitions, 13851 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-03-09 01:34:06,387 INFO L231 Difference]: Finished difference. Result has 592 places, 249 transitions, 1744 flow [2025-03-09 01:34:06,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=1744, PETRI_PLACES=592, PETRI_TRANSITIONS=249} [2025-03-09 01:34:06,387 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 556 predicate places. [2025-03-09 01:34:06,387 INFO L471 AbstractCegarLoop]: Abstraction has has 592 places, 249 transitions, 1744 flow [2025-03-09 01:34:06,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 11.063725490196079) internal successors, (2257), 204 states have internal predecessors, (2257), 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 01:34:06,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:34:06,388 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:34:06,394 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 01:34:06,588 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 01:34:06,588 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-09 01:34:06,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:34:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -722893563, now seen corresponding path program 6 times [2025-03-09 01:34:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:34:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366670501] [2025-03-09 01:34:06,590 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:34:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:34:06,594 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-03-09 01:34:06,609 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-03-09 01:34:06,609 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-09 01:34:06,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:34:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:34:09,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:34:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366670501] [2025-03-09 01:34:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366670501] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:34:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689468466] [2025-03-09 01:34:09,653 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:34:09,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:34:09,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:34:09,655 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 01:34:09,656 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 01:34:09,692 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 48 equivalence classes. [2025-03-09 01:34:09,731 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 107 of 107 statements. [2025-03-09 01:34:09,731 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-03-09 01:34:09,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:34:09,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-03-09 01:34:09,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:34:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:34:12,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:34:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:34:15,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689468466] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:34:15,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:34:15,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 202 [2025-03-09 01:34:15,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482602195] [2025-03-09 01:34:15,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:34:15,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2025-03-09 01:34:15,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:34:15,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2025-03-09 01:34:15,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14950, Invalid=26056, Unknown=0, NotChecked=0, Total=41006 [2025-03-09 01:34:15,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2025-03-09 01:34:15,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 249 transitions, 1744 flow. Second operand has 203 states, 203 states have (on average 11.064039408866995) internal successors, (2246), 203 states have internal predecessors, (2246), 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 01:34:15,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:34:15,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2025-03-09 01:34:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand