./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:24:36,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:24:36,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:24:36,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:24:36,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:24:36,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:24:36,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:24:36,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:24:36,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:24:36,371 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:24:36,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:24:36,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:24:36,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:24:36,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:24:36,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:24:36,373 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:24:36,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:24:36,373 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:24:36,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:24:36,374 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:24:36,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:24:36,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:24:36,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:24:36,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:24:36,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:24:36,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:24:36,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:24:36,375 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 -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2025-03-09 01:24:36,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:24:36,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:24:36,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:24:36,621 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:24:36,622 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:24:36,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-03-09 01:24:37,776 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f32a8cd6/9e3c1fca642c40f88017dc6ca3226f37/FLAG09fe02725 [2025-03-09 01:24:37,998 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:24:37,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-03-09 01:24:38,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f32a8cd6/9e3c1fca642c40f88017dc6ca3226f37/FLAG09fe02725 [2025-03-09 01:24:38,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f32a8cd6/9e3c1fca642c40f88017dc6ca3226f37 [2025-03-09 01:24:38,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:24:38,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:24:38,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:24:38,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:24:38,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:24:38,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d41fce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38, skipping insertion in model container [2025-03-09 01:24:38,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:24:38,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:24:38,497 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:24:38,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:24:38,526 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:24:38,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38 WrapperNode [2025-03-09 01:24:38,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:24:38,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:24:38,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:24:38,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:24:38,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,553 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2025-03-09 01:24:38,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:24:38,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:24:38,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:24:38,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:24:38,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,575 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 01:24:38,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:24:38,585 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:24:38,586 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:24:38,586 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:24:38,586 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (1/1) ... [2025-03-09 01:24:38,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:24:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:38,616 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 01:24:38,623 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 01:24:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:24:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:24:38,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:24:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:24:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:24:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:24:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:24:38,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:24:38,642 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 01:24:38,709 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:24:38,710 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:24:38,862 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:24:38,862 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:24:38,978 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:24:38,979 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:24:38,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:24:38 BoogieIcfgContainer [2025-03-09 01:24:38,979 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:24:38,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:24:38,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:24:38,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:24:38,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:24:38" (1/3) ... [2025-03-09 01:24:38,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243003f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:24:38, skipping insertion in model container [2025-03-09 01:24:38,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:38" (2/3) ... [2025-03-09 01:24:38,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243003f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:24:38, skipping insertion in model container [2025-03-09 01:24:38,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:24:38" (3/3) ... [2025-03-09 01:24:38,986 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2025-03-09 01:24:38,997 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:24:38,998 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1-alt.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-09 01:24:38,999 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:24:39,040 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:24:39,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2025-03-09 01:24:39,099 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2025-03-09 01:24:39,100 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:24:39,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-03-09 01:24:39,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2025-03-09 01:24:39,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2025-03-09 01:24:39,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:24:39,127 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;@46d569dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:24:39,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-09 01:24:39,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:24:39,135 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-09 01:24:39,135 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:24:39,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:39,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:39,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:39,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1096739583, now seen corresponding path program 1 times [2025-03-09 01:24:39,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:39,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613170369] [2025-03-09 01:24:39,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:39,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:39,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:24:39,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:39,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:39,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:39,633 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 01:24:39,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:39,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613170369] [2025-03-09 01:24:39,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613170369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:39,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:39,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934343549] [2025-03-09 01:24:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:39,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:39,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:39,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:39,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:39,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:39,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:39,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:39,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:39,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:39,853 INFO L124 PetriNetUnfolderBase]: 88/176 cut-off events. [2025-03-09 01:24:39,855 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-09 01:24:39,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 176 events. 88/176 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 26 based on Foata normal form. 3/171 useless extension candidates. Maximal degree in co-relation 307. Up to 110 conditions per place. [2025-03-09 01:24:39,859 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 31 selfloop transitions, 8 changer transitions 4/45 dead transitions. [2025-03-09 01:24:39,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 209 flow [2025-03-09 01:24:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-03-09 01:24:39,870 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2025-03-09 01:24:39,872 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 82 transitions. [2025-03-09 01:24:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 209 flow [2025-03-09 01:24:39,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:39,879 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 97 flow [2025-03-09 01:24:39,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2025-03-09 01:24:39,885 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2025-03-09 01:24:39,885 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 97 flow [2025-03-09 01:24:39,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:39,886 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:39,886 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:39,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:24:39,887 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:39,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:39,888 INFO L85 PathProgramCache]: Analyzing trace with hash 442307849, now seen corresponding path program 2 times [2025-03-09 01:24:39,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:39,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822589289] [2025-03-09 01:24:39,888 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:39,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:39,900 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:24:39,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:39,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:39,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:40,108 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 01:24:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:40,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822589289] [2025-03-09 01:24:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822589289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504541138] [2025-03-09 01:24:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:40,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:40,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:40,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:40,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:40,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:40,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:40,266 INFO L124 PetriNetUnfolderBase]: 88/184 cut-off events. [2025-03-09 01:24:40,266 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-03-09 01:24:40,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 184 events. 88/184 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 641 event pairs, 22 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 473. Up to 110 conditions per place. [2025-03-09 01:24:40,268 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 30 selfloop transitions, 8 changer transitions 9/49 dead transitions. [2025-03-09 01:24:40,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 269 flow [2025-03-09 01:24:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:40,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2025-03-09 01:24:40,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2025-03-09 01:24:40,270 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 97 flow. Second operand 7 states and 79 transitions. [2025-03-09 01:24:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 269 flow [2025-03-09 01:24:40,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 265 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 01:24:40,272 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 131 flow [2025-03-09 01:24:40,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2025-03-09 01:24:40,273 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2025-03-09 01:24:40,273 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 131 flow [2025-03-09 01:24:40,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:40,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:40,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:24:40,274 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:40,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:40,275 INFO L85 PathProgramCache]: Analyzing trace with hash -986836711, now seen corresponding path program 3 times [2025-03-09 01:24:40,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:40,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687025268] [2025-03-09 01:24:40,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:40,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:40,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:24:40,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:40,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:24:40,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:40,521 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 01:24:40,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:40,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687025268] [2025-03-09 01:24:40,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687025268] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:40,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:40,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:40,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589011305] [2025-03-09 01:24:40,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:40,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:40,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:40,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:40,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:40,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:40,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:40,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:40,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:40,634 INFO L124 PetriNetUnfolderBase]: 91/185 cut-off events. [2025-03-09 01:24:40,635 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2025-03-09 01:24:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 185 events. 91/185 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 607 event pairs, 30 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 568. Up to 114 conditions per place. [2025-03-09 01:24:40,636 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 12 changer transitions 4/47 dead transitions. [2025-03-09 01:24:40,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 310 flow [2025-03-09 01:24:40,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-03-09 01:24:40,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-03-09 01:24:40,638 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 131 flow. Second operand 7 states and 78 transitions. [2025-03-09 01:24:40,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 310 flow [2025-03-09 01:24:40,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 289 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:40,640 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 194 flow [2025-03-09 01:24:40,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2025-03-09 01:24:40,640 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2025-03-09 01:24:40,640 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 194 flow [2025-03-09 01:24:40,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:40,641 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:40,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:24:40,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:40,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1628008373, now seen corresponding path program 4 times [2025-03-09 01:24:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037378846] [2025-03-09 01:24:40,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:40,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:40,647 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-03-09 01:24:40,654 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:40,654 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:40,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:40,787 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 01:24:40,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:40,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037378846] [2025-03-09 01:24:40,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037378846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:40,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:40,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863048213] [2025-03-09 01:24:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:40,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:40,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:40,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:40,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:40,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:40,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:40,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:40,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:40,934 INFO L124 PetriNetUnfolderBase]: 90/196 cut-off events. [2025-03-09 01:24:40,934 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2025-03-09 01:24:40,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 196 events. 90/196 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 712 event pairs, 23 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 624. Up to 114 conditions per place. [2025-03-09 01:24:40,936 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 36 selfloop transitions, 12 changer transitions 5/55 dead transitions. [2025-03-09 01:24:40,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 402 flow [2025-03-09 01:24:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-03-09 01:24:40,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2025-03-09 01:24:40,938 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 194 flow. Second operand 7 states and 82 transitions. [2025-03-09 01:24:40,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 402 flow [2025-03-09 01:24:40,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 377 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-09 01:24:40,942 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 239 flow [2025-03-09 01:24:40,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2025-03-09 01:24:40,942 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-03-09 01:24:40,942 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 239 flow [2025-03-09 01:24:40,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:40,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:40,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:40,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:24:40,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:40,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1071181635, now seen corresponding path program 5 times [2025-03-09 01:24:40,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70988238] [2025-03-09 01:24:40,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:40,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:40,948 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:24:40,950 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:40,951 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:40,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:41,102 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 01:24:41,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:41,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70988238] [2025-03-09 01:24:41,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70988238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:41,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:41,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:41,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606832056] [2025-03-09 01:24:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:41,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:41,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:41,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:41,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:41,111 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:41,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:41,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:41,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:41,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:41,192 INFO L124 PetriNetUnfolderBase]: 89/189 cut-off events. [2025-03-09 01:24:41,192 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2025-03-09 01:24:41,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 189 events. 89/189 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 664 event pairs, 28 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 646. Up to 114 conditions per place. [2025-03-09 01:24:41,193 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 13 changer transitions 8/51 dead transitions. [2025-03-09 01:24:41,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 402 flow [2025-03-09 01:24:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:41,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-03-09 01:24:41,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-03-09 01:24:41,195 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 239 flow. Second operand 7 states and 78 transitions. [2025-03-09 01:24:41,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 402 flow [2025-03-09 01:24:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 378 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:41,198 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 232 flow [2025-03-09 01:24:41,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2025-03-09 01:24:41,202 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2025-03-09 01:24:41,202 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 232 flow [2025-03-09 01:24:41,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:41,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:41,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:41,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:24:41,203 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:41,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1097659231, now seen corresponding path program 6 times [2025-03-09 01:24:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:41,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827463138] [2025-03-09 01:24:41,206 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:41,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:41,210 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 1 equivalence classes. [2025-03-09 01:24:41,214 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-09 01:24:41,214 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 01:24:41,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:41,363 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 01:24:41,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:41,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827463138] [2025-03-09 01:24:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827463138] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:41,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568634995] [2025-03-09 01:24:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:41,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:41,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:41,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-03-09 01:24:41,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:41,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:41,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-03-09 01:24:41,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:41,445 INFO L124 PetriNetUnfolderBase]: 83/166 cut-off events. [2025-03-09 01:24:41,446 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2025-03-09 01:24:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 166 events. 83/166 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 513 event pairs, 27 based on Foata normal form. 1/159 useless extension candidates. Maximal degree in co-relation 558. Up to 114 conditions per place. [2025-03-09 01:24:41,447 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 22 selfloop transitions, 13 changer transitions 7/44 dead transitions. [2025-03-09 01:24:41,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 349 flow [2025-03-09 01:24:41,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2025-03-09 01:24:41,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-03-09 01:24:41,448 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 232 flow. Second operand 7 states and 72 transitions. [2025-03-09 01:24:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 349 flow [2025-03-09 01:24:41,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 307 flow, removed 3 selfloop flow, removed 10 redundant places. [2025-03-09 01:24:41,450 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 210 flow [2025-03-09 01:24:41,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2025-03-09 01:24:41,451 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2025-03-09 01:24:41,451 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 210 flow [2025-03-09 01:24:41,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 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 01:24:41,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:41,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:41,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:24:41,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:41,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:41,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1178779024, now seen corresponding path program 1 times [2025-03-09 01:24:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479834782] [2025-03-09 01:24:41,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:41,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:41,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:41,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:41,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:41,653 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 01:24:41,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:41,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479834782] [2025-03-09 01:24:41,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479834782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:41,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:41,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:41,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310201242] [2025-03-09 01:24:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:41,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:41,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:41,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:41,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:41,661 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:41,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:41,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:41,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:41,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:41,801 INFO L124 PetriNetUnfolderBase]: 177/327 cut-off events. [2025-03-09 01:24:41,801 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2025-03-09 01:24:41,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 327 events. 177/327 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1195 event pairs, 2 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 948. Up to 151 conditions per place. [2025-03-09 01:24:41,803 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 57 selfloop transitions, 19 changer transitions 4/81 dead transitions. [2025-03-09 01:24:41,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 537 flow [2025-03-09 01:24:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:41,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2025-03-09 01:24:41,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-03-09 01:24:41,805 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 210 flow. Second operand 10 states and 112 transitions. [2025-03-09 01:24:41,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 537 flow [2025-03-09 01:24:41,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 489 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-09 01:24:41,807 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 271 flow [2025-03-09 01:24:41,807 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2025-03-09 01:24:41,808 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2025-03-09 01:24:41,808 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 271 flow [2025-03-09 01:24:41,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:41,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:41,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:41,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:24:41,808 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:41,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:41,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1507177970, now seen corresponding path program 2 times [2025-03-09 01:24:41,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:41,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355559697] [2025-03-09 01:24:41,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:41,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:41,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:41,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:41,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:41,982 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 01:24:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:41,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355559697] [2025-03-09 01:24:41,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355559697] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:41,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:41,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:41,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257854952] [2025-03-09 01:24:41,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:41,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:41,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:41,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:41,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:41,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:41,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:41,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:41,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:42,136 INFO L124 PetriNetUnfolderBase]: 187/347 cut-off events. [2025-03-09 01:24:42,137 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2025-03-09 01:24:42,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 347 events. 187/347 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1265 event pairs, 40 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1217. Up to 241 conditions per place. [2025-03-09 01:24:42,139 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 49 selfloop transitions, 19 changer transitions 4/73 dead transitions. [2025-03-09 01:24:42,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 547 flow [2025-03-09 01:24:42,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2025-03-09 01:24:42,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2025-03-09 01:24:42,141 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 271 flow. Second operand 10 states and 98 transitions. [2025-03-09 01:24:42,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 547 flow [2025-03-09 01:24:42,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 531 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-09 01:24:42,143 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 356 flow [2025-03-09 01:24:42,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2025-03-09 01:24:42,143 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2025-03-09 01:24:42,143 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 356 flow [2025-03-09 01:24:42,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:42,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:42,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:42,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 01:24:42,145 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:42,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:42,145 INFO L85 PathProgramCache]: Analyzing trace with hash 103911092, now seen corresponding path program 3 times [2025-03-09 01:24:42,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:42,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657168379] [2025-03-09 01:24:42,145 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:42,153 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:42,156 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:42,156 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:42,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:42,310 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 01:24:42,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657168379] [2025-03-09 01:24:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657168379] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210107981] [2025-03-09 01:24:42,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:42,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:42,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:42,313 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 01:24:42,315 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 01:24:42,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:42,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:42,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:42,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:42,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:42,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:42,525 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 01:24:42,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:42,678 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 01:24:42,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210107981] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:42,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:42,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-03-09 01:24:42,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645024701] [2025-03-09 01:24:42,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:42,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 01:24:42,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:42,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 01:24:42,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2025-03-09 01:24:42,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:42,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 356 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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 01:24:42,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:42,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:42,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:44,324 INFO L124 PetriNetUnfolderBase]: 518/974 cut-off events. [2025-03-09 01:24:44,324 INFO L125 PetriNetUnfolderBase]: For 1360/1360 co-relation queries the response was YES. [2025-03-09 01:24:44,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 974 events. 518/974 cut-off events. For 1360/1360 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4775 event pairs, 14 based on Foata normal form. 24/998 useless extension candidates. Maximal degree in co-relation 3252. Up to 184 conditions per place. [2025-03-09 01:24:44,329 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 168 selfloop transitions, 144 changer transitions 8/321 dead transitions. [2025-03-09 01:24:44,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2135 flow [2025-03-09 01:24:44,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-09 01:24:44,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-03-09 01:24:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 551 transitions. [2025-03-09 01:24:44,331 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3891242937853107 [2025-03-09 01:24:44,331 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 356 flow. Second operand 59 states and 551 transitions. [2025-03-09 01:24:44,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2135 flow [2025-03-09 01:24:44,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 321 transitions, 2059 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-09 01:24:44,338 INFO L231 Difference]: Finished difference. Result has 133 places, 174 transitions, 1405 flow [2025-03-09 01:24:44,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1405, PETRI_PLACES=133, PETRI_TRANSITIONS=174} [2025-03-09 01:24:44,339 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 107 predicate places. [2025-03-09 01:24:44,339 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 174 transitions, 1405 flow [2025-03-09 01:24:44,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 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 01:24:44,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:44,339 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:44,345 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 01:24:44,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:44,540 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:44,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 214733612, now seen corresponding path program 4 times [2025-03-09 01:24:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518262270] [2025-03-09 01:24:44,540 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:44,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:44,544 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:44,546 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:44,546 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:44,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:44,683 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 01:24:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518262270] [2025-03-09 01:24:44,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518262270] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:44,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711054840] [2025-03-09 01:24:44,683 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:44,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:44,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:44,685 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 01:24:44,687 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 01:24:44,710 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:44,718 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:44,718 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:44,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:44,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:44,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:44,883 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 01:24:44,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:45,043 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 01:24:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711054840] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:45,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696864317] [2025-03-09 01:24:45,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:45,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:45,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:45,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:45,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:45,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 174 transitions, 1405 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:45,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:45,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:45,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:45,982 INFO L124 PetriNetUnfolderBase]: 639/1201 cut-off events. [2025-03-09 01:24:45,982 INFO L125 PetriNetUnfolderBase]: For 5895/5895 co-relation queries the response was YES. [2025-03-09 01:24:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 1201 events. 639/1201 cut-off events. For 5895/5895 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6114 event pairs, 32 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 5592. Up to 361 conditions per place. [2025-03-09 01:24:45,991 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 158 selfloop transitions, 178 changer transitions 8/345 dead transitions. [2025-03-09 01:24:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 345 transitions, 3249 flow [2025-03-09 01:24:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-09 01:24:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-09 01:24:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 355 transitions. [2025-03-09 01:24:45,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3997747747747748 [2025-03-09 01:24:45,993 INFO L175 Difference]: Start difference. First operand has 133 places, 174 transitions, 1405 flow. Second operand 37 states and 355 transitions. [2025-03-09 01:24:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 345 transitions, 3249 flow [2025-03-09 01:24:46,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 345 transitions, 2619 flow, removed 217 selfloop flow, removed 16 redundant places. [2025-03-09 01:24:46,022 INFO L231 Difference]: Finished difference. Result has 163 places, 245 transitions, 1941 flow [2025-03-09 01:24:46,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1941, PETRI_PLACES=163, PETRI_TRANSITIONS=245} [2025-03-09 01:24:46,022 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2025-03-09 01:24:46,022 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 245 transitions, 1941 flow [2025-03-09 01:24:46,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:46,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:46,023 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:46,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 01:24:46,223 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,SelfDestructingSolverStorable9 [2025-03-09 01:24:46,224 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:46,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1746820308, now seen corresponding path program 5 times [2025-03-09 01:24:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706693227] [2025-03-09 01:24:46,224 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:46,228 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:46,230 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:46,230 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:46,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:46,360 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 01:24:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:46,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706693227] [2025-03-09 01:24:46,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706693227] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:46,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:46,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098376375] [2025-03-09 01:24:46,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:46,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:46,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:46,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:46,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:46,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:46,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 245 transitions, 1941 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:46,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:46,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:46,551 INFO L124 PetriNetUnfolderBase]: 645/1213 cut-off events. [2025-03-09 01:24:46,551 INFO L125 PetriNetUnfolderBase]: For 6948/6948 co-relation queries the response was YES. [2025-03-09 01:24:46,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 1213 events. 645/1213 cut-off events. For 6948/6948 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6189 event pairs, 77 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 5520. Up to 1122 conditions per place. [2025-03-09 01:24:46,561 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 245 selfloop transitions, 19 changer transitions 4/269 dead transitions. [2025-03-09 01:24:46,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 269 transitions, 2615 flow [2025-03-09 01:24:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2025-03-09 01:24:46,561 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-09 01:24:46,561 INFO L175 Difference]: Start difference. First operand has 163 places, 245 transitions, 1941 flow. Second operand 10 states and 90 transitions. [2025-03-09 01:24:46,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 269 transitions, 2615 flow [2025-03-09 01:24:46,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 269 transitions, 2541 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-03-09 01:24:46,585 INFO L231 Difference]: Finished difference. Result has 167 places, 250 transitions, 1981 flow [2025-03-09 01:24:46,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=167, PETRI_TRANSITIONS=250} [2025-03-09 01:24:46,586 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 141 predicate places. [2025-03-09 01:24:46,586 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 250 transitions, 1981 flow [2025-03-09 01:24:46,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:46,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:46,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:46,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 01:24:46,586 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:46,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -17772974, now seen corresponding path program 6 times [2025-03-09 01:24:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754958809] [2025-03-09 01:24:46,589 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:46,591 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:46,594 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:46,594 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 01:24:46,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:46,713 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 01:24:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754958809] [2025-03-09 01:24:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754958809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:46,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948076492] [2025-03-09 01:24:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:46,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:46,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:46,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:46,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:46,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 250 transitions, 1981 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:46,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:46,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:46,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:46,956 INFO L124 PetriNetUnfolderBase]: 656/1234 cut-off events. [2025-03-09 01:24:46,956 INFO L125 PetriNetUnfolderBase]: For 6820/6820 co-relation queries the response was YES. [2025-03-09 01:24:46,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 1234 events. 656/1234 cut-off events. For 6820/6820 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6307 event pairs, 77 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 5869. Up to 1137 conditions per place. [2025-03-09 01:24:46,965 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 249 selfloop transitions, 23 changer transitions 4/277 dead transitions. [2025-03-09 01:24:46,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 277 transitions, 2670 flow [2025-03-09 01:24:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:24:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:24:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2025-03-09 01:24:46,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-09 01:24:46,966 INFO L175 Difference]: Start difference. First operand has 167 places, 250 transitions, 1981 flow. Second operand 11 states and 99 transitions. [2025-03-09 01:24:46,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 277 transitions, 2670 flow [2025-03-09 01:24:46,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 277 transitions, 2638 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-09 01:24:46,990 INFO L231 Difference]: Finished difference. Result has 175 places, 256 transitions, 2069 flow [2025-03-09 01:24:46,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2069, PETRI_PLACES=175, PETRI_TRANSITIONS=256} [2025-03-09 01:24:46,991 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2025-03-09 01:24:46,991 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 256 transitions, 2069 flow [2025-03-09 01:24:46,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:46,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:46,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:46,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 01:24:46,992 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:46,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:46,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1735522034, now seen corresponding path program 7 times [2025-03-09 01:24:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:46,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880793377] [2025-03-09 01:24:46,992 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:24:46,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:46,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:46,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:46,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:46,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:47,129 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 01:24:47,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:47,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880793377] [2025-03-09 01:24:47,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880793377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:47,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:47,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163451437] [2025-03-09 01:24:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:47,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:47,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:47,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:47,139 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:47,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 256 transitions, 2069 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:47,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:47,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:47,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:47,341 INFO L124 PetriNetUnfolderBase]: 689/1290 cut-off events. [2025-03-09 01:24:47,342 INFO L125 PetriNetUnfolderBase]: For 7015/7015 co-relation queries the response was YES. [2025-03-09 01:24:47,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 1290 events. 689/1290 cut-off events. For 7015/7015 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6652 event pairs, 77 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 6166. Up to 1157 conditions per place. [2025-03-09 01:24:47,352 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 260 selfloop transitions, 32 changer transitions 4/297 dead transitions. [2025-03-09 01:24:47,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 297 transitions, 2897 flow [2025-03-09 01:24:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:24:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:24:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2025-03-09 01:24:47,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2025-03-09 01:24:47,353 INFO L175 Difference]: Start difference. First operand has 175 places, 256 transitions, 2069 flow. Second operand 11 states and 106 transitions. [2025-03-09 01:24:47,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 297 transitions, 2897 flow [2025-03-09 01:24:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 297 transitions, 2852 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-03-09 01:24:47,382 INFO L231 Difference]: Finished difference. Result has 180 places, 266 transitions, 2208 flow [2025-03-09 01:24:47,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2208, PETRI_PLACES=180, PETRI_TRANSITIONS=266} [2025-03-09 01:24:47,383 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2025-03-09 01:24:47,383 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 266 transitions, 2208 flow [2025-03-09 01:24:47,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:47,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:47,384 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:47,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 01:24:47,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:47,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2131023562, now seen corresponding path program 8 times [2025-03-09 01:24:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:47,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750020463] [2025-03-09 01:24:47,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:47,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:47,388 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:47,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:47,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:47,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:47,508 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 01:24:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:47,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750020463] [2025-03-09 01:24:47,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750020463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:47,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:47,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851708475] [2025-03-09 01:24:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:47,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:47,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:47,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:47,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:47,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 266 transitions, 2208 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:47,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:47,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:47,730 INFO L124 PetriNetUnfolderBase]: 693/1302 cut-off events. [2025-03-09 01:24:47,731 INFO L125 PetriNetUnfolderBase]: For 7203/7203 co-relation queries the response was YES. [2025-03-09 01:24:47,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1302 events. 693/1302 cut-off events. For 7203/7203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6731 event pairs, 79 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 6302. Up to 1204 conditions per place. [2025-03-09 01:24:47,740 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 257 selfloop transitions, 25 changer transitions 4/287 dead transitions. [2025-03-09 01:24:47,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 287 transitions, 2888 flow [2025-03-09 01:24:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 01:24:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 01:24:47,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2025-03-09 01:24:47,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2025-03-09 01:24:47,741 INFO L175 Difference]: Start difference. First operand has 180 places, 266 transitions, 2208 flow. Second operand 11 states and 98 transitions. [2025-03-09 01:24:47,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 287 transitions, 2888 flow [2025-03-09 01:24:47,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 287 transitions, 2828 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-09 01:24:47,767 INFO L231 Difference]: Finished difference. Result has 184 places, 269 transitions, 2246 flow [2025-03-09 01:24:47,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2246, PETRI_PLACES=184, PETRI_TRANSITIONS=269} [2025-03-09 01:24:47,768 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 158 predicate places. [2025-03-09 01:24:47,768 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 269 transitions, 2246 flow [2025-03-09 01:24:47,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:47,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:47,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:47,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 01:24:47,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:47,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -169478578, now seen corresponding path program 9 times [2025-03-09 01:24:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:47,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566696798] [2025-03-09 01:24:47,769 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:47,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:47,772 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:47,774 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:47,774 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:47,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:47,874 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 01:24:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566696798] [2025-03-09 01:24:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566696798] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798766600] [2025-03-09 01:24:47,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:47,876 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 01:24:47,878 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 01:24:47,910 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:47,921 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:47,921 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:47,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:47,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:47,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:48,073 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 01:24:48,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:48,207 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 01:24:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798766600] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:48,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:48,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:48,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067437884] [2025-03-09 01:24:48,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:48,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:48,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:48,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:48,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:48,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 269 transitions, 2246 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:48,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:48,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:48,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:48,640 INFO L124 PetriNetUnfolderBase]: 752/1425 cut-off events. [2025-03-09 01:24:48,640 INFO L125 PetriNetUnfolderBase]: For 7636/7636 co-relation queries the response was YES. [2025-03-09 01:24:48,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 1425 events. 752/1425 cut-off events. For 7636/7636 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7663 event pairs, 59 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 6831. Up to 970 conditions per place. [2025-03-09 01:24:48,652 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 154 selfloop transitions, 176 changer transitions 8/339 dead transitions. [2025-03-09 01:24:48,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 339 transitions, 3361 flow [2025-03-09 01:24:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 01:24:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 01:24:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2025-03-09 01:24:48,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2025-03-09 01:24:48,654 INFO L175 Difference]: Start difference. First operand has 184 places, 269 transitions, 2246 flow. Second operand 18 states and 156 transitions. [2025-03-09 01:24:48,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 339 transitions, 3361 flow [2025-03-09 01:24:48,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 339 transitions, 3300 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-03-09 01:24:48,684 INFO L231 Difference]: Finished difference. Result has 201 places, 305 transitions, 3172 flow [2025-03-09 01:24:48,685 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3172, PETRI_PLACES=201, PETRI_TRANSITIONS=305} [2025-03-09 01:24:48,685 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2025-03-09 01:24:48,685 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 305 transitions, 3172 flow [2025-03-09 01:24:48,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:48,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:48,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:48,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 01:24:48,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:48,887 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:48,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 401976228, now seen corresponding path program 10 times [2025-03-09 01:24:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:48,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014650407] [2025-03-09 01:24:48,887 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:48,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:48,892 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:48,892 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:48,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:48,994 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 01:24:48,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:48,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014650407] [2025-03-09 01:24:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014650407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:48,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516496683] [2025-03-09 01:24:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:48,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:48,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:48,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:48,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:48,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 305 transitions, 3172 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:48,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:48,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:48,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:49,265 INFO L124 PetriNetUnfolderBase]: 754/1429 cut-off events. [2025-03-09 01:24:49,266 INFO L125 PetriNetUnfolderBase]: For 9045/9045 co-relation queries the response was YES. [2025-03-09 01:24:49,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1429 events. 754/1429 cut-off events. For 9045/9045 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7700 event pairs, 82 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 7843. Up to 1337 conditions per place. [2025-03-09 01:24:49,275 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 297 selfloop transitions, 21 changer transitions 4/323 dead transitions. [2025-03-09 01:24:49,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 323 transitions, 3924 flow [2025-03-09 01:24:49,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:49,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2025-03-09 01:24:49,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2025-03-09 01:24:49,276 INFO L175 Difference]: Start difference. First operand has 201 places, 305 transitions, 3172 flow. Second operand 10 states and 89 transitions. [2025-03-09 01:24:49,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 323 transitions, 3924 flow [2025-03-09 01:24:49,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 323 transitions, 3774 flow, removed 12 selfloop flow, removed 12 redundant places. [2025-03-09 01:24:49,315 INFO L231 Difference]: Finished difference. Result has 199 places, 307 transitions, 3111 flow [2025-03-09 01:24:49,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3111, PETRI_PLACES=199, PETRI_TRANSITIONS=307} [2025-03-09 01:24:49,316 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 173 predicate places. [2025-03-09 01:24:49,316 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 307 transitions, 3111 flow [2025-03-09 01:24:49,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:49,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:49,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:49,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 01:24:49,316 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash 413274502, now seen corresponding path program 11 times [2025-03-09 01:24:49,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:49,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27722666] [2025-03-09 01:24:49,320 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:49,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:49,322 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:49,324 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:49,324 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:49,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:49,441 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 01:24:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27722666] [2025-03-09 01:24:49,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27722666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61032020] [2025-03-09 01:24:49,441 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:49,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:49,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:49,444 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 01:24:49,445 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 01:24:49,472 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:49,480 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:49,480 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:49,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:49,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:49,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:49,645 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 01:24:49,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:49,782 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 01:24:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61032020] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:49,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473931435] [2025-03-09 01:24:49,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:49,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:49,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:49,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:49,787 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:49,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 307 transitions, 3111 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:49,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:49,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:51,219 INFO L124 PetriNetUnfolderBase]: 1036/1978 cut-off events. [2025-03-09 01:24:51,220 INFO L125 PetriNetUnfolderBase]: For 12918/12918 co-relation queries the response was YES. [2025-03-09 01:24:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1978 events. 1036/1978 cut-off events. For 12918/12918 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11862 event pairs, 49 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 10585. Up to 809 conditions per place. [2025-03-09 01:24:51,253 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 233 selfloop transitions, 307 changer transitions 13/554 dead transitions. [2025-03-09 01:24:51,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 554 transitions, 5992 flow [2025-03-09 01:24:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-09 01:24:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-09 01:24:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 478 transitions. [2025-03-09 01:24:51,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34941520467836257 [2025-03-09 01:24:51,258 INFO L175 Difference]: Start difference. First operand has 199 places, 307 transitions, 3111 flow. Second operand 57 states and 478 transitions. [2025-03-09 01:24:51,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 554 transitions, 5992 flow [2025-03-09 01:24:51,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 554 transitions, 5936 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-03-09 01:24:51,308 INFO L231 Difference]: Finished difference. Result has 267 places, 441 transitions, 5406 flow [2025-03-09 01:24:51,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5406, PETRI_PLACES=267, PETRI_TRANSITIONS=441} [2025-03-09 01:24:51,308 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 241 predicate places. [2025-03-09 01:24:51,308 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 441 transitions, 5406 flow [2025-03-09 01:24:51,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:51,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:51,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:51,314 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 01:24:51,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 01:24:51,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:51,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1493977900, now seen corresponding path program 12 times [2025-03-09 01:24:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105453886] [2025-03-09 01:24:51,510 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:51,512 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:51,514 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:51,514 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:24:51,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:51,608 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 01:24:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105453886] [2025-03-09 01:24:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105453886] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148265034] [2025-03-09 01:24:51,609 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:51,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:51,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:51,611 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 01:24:51,613 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 01:24:51,635 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:51,643 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:51,643 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:24:51,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:51,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:51,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:51,779 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 01:24:51,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:51,869 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 01:24:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148265034] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:51,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:51,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:51,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29275092] [2025-03-09 01:24:51,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:51,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:51,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:51,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:51,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:51,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 441 transitions, 5406 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:51,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:51,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:51,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:52,351 INFO L124 PetriNetUnfolderBase]: 1041/1991 cut-off events. [2025-03-09 01:24:52,351 INFO L125 PetriNetUnfolderBase]: For 23109/23109 co-relation queries the response was YES. [2025-03-09 01:24:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13047 conditions, 1991 events. 1041/1991 cut-off events. For 23109/23109 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12006 event pairs, 62 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 12900. Up to 1328 conditions per place. [2025-03-09 01:24:52,362 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 234 selfloop transitions, 242 changer transitions 8/485 dead transitions. [2025-03-09 01:24:52,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 485 transitions, 6679 flow [2025-03-09 01:24:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 01:24:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 01:24:52,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2025-03-09 01:24:52,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34649122807017546 [2025-03-09 01:24:52,363 INFO L175 Difference]: Start difference. First operand has 267 places, 441 transitions, 5406 flow. Second operand 19 states and 158 transitions. [2025-03-09 01:24:52,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 485 transitions, 6679 flow [2025-03-09 01:24:52,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 485 transitions, 6284 flow, removed 137 selfloop flow, removed 16 redundant places. [2025-03-09 01:24:52,493 INFO L231 Difference]: Finished difference. Result has 273 places, 452 transitions, 5941 flow [2025-03-09 01:24:52,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5941, PETRI_PLACES=273, PETRI_TRANSITIONS=452} [2025-03-09 01:24:52,494 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 247 predicate places. [2025-03-09 01:24:52,494 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 452 transitions, 5941 flow [2025-03-09 01:24:52,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:52,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:52,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:52,500 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 01:24:52,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 01:24:52,695 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:52,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 418266744, now seen corresponding path program 13 times [2025-03-09 01:24:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92261208] [2025-03-09 01:24:52,695 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:24:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:52,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:52,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:52,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:52,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:52,805 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 01:24:52,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92261208] [2025-03-09 01:24:52,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92261208] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:52,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399074490] [2025-03-09 01:24:52,806 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:24:52,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:52,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:52,808 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 01:24:52,810 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 01:24:52,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:52,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:52,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:52,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:52,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:52,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:52,984 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 01:24:52,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:53,087 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 01:24:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399074490] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:53,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:53,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046108507] [2025-03-09 01:24:53,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:53,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:53,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:53,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:53,095 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:53,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 452 transitions, 5941 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:53,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:53,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:53,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:53,694 INFO L124 PetriNetUnfolderBase]: 1047/2009 cut-off events. [2025-03-09 01:24:53,694 INFO L125 PetriNetUnfolderBase]: For 23329/23329 co-relation queries the response was YES. [2025-03-09 01:24:53,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13500 conditions, 2009 events. 1047/2009 cut-off events. For 23329/23329 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12180 event pairs, 62 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 13413. Up to 1340 conditions per place. [2025-03-09 01:24:53,709 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 222 selfloop transitions, 267 changer transitions 8/498 dead transitions. [2025-03-09 01:24:53,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 498 transitions, 7235 flow [2025-03-09 01:24:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-09 01:24:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-09 01:24:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 201 transitions. [2025-03-09 01:24:53,710 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.335 [2025-03-09 01:24:53,710 INFO L175 Difference]: Start difference. First operand has 273 places, 452 transitions, 5941 flow. Second operand 25 states and 201 transitions. [2025-03-09 01:24:53,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 498 transitions, 7235 flow [2025-03-09 01:24:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 498 transitions, 7188 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-03-09 01:24:53,832 INFO L231 Difference]: Finished difference. Result has 297 places, 458 transitions, 6857 flow [2025-03-09 01:24:53,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6857, PETRI_PLACES=297, PETRI_TRANSITIONS=458} [2025-03-09 01:24:53,834 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 271 predicate places. [2025-03-09 01:24:53,834 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 458 transitions, 6857 flow [2025-03-09 01:24:53,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:53,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:53,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:53,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 01:24:54,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:54,035 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:54,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash 989721550, now seen corresponding path program 14 times [2025-03-09 01:24:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182288385] [2025-03-09 01:24:54,036 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:54,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-09 01:24:54,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:54,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:54,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:54,145 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 01:24:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182288385] [2025-03-09 01:24:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182288385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:54,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:54,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 01:24:54,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506787309] [2025-03-09 01:24:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:54,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:24:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:54,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:24:54,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:24:54,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:54,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 458 transitions, 6857 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:54,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:54,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:54,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:54,430 INFO L124 PetriNetUnfolderBase]: 1049/2013 cut-off events. [2025-03-09 01:24:54,431 INFO L125 PetriNetUnfolderBase]: For 27956/27956 co-relation queries the response was YES. [2025-03-09 01:24:54,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 2013 events. 1049/2013 cut-off events. For 27956/27956 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12170 event pairs, 109 based on Foata normal form. 1/2014 useless extension candidates. Maximal degree in co-relation 14563. Up to 1914 conditions per place. [2025-03-09 01:24:54,447 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 445 selfloop transitions, 24 changer transitions 4/474 dead transitions. [2025-03-09 01:24:54,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 474 transitions, 7936 flow [2025-03-09 01:24:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2025-03-09 01:24:54,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3625 [2025-03-09 01:24:54,448 INFO L175 Difference]: Start difference. First operand has 297 places, 458 transitions, 6857 flow. Second operand 10 states and 87 transitions. [2025-03-09 01:24:54,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 474 transitions, 7936 flow [2025-03-09 01:24:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 474 transitions, 7502 flow, removed 24 selfloop flow, removed 17 redundant places. [2025-03-09 01:24:54,586 INFO L231 Difference]: Finished difference. Result has 290 places, 460 transitions, 6537 flow [2025-03-09 01:24:54,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6423, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6537, PETRI_PLACES=290, PETRI_TRANSITIONS=460} [2025-03-09 01:24:54,587 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2025-03-09 01:24:54,587 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 460 transitions, 6537 flow [2025-03-09 01:24:54,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 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 01:24:54,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:54,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:54,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 01:24:54,588 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:54,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 890197304, now seen corresponding path program 15 times [2025-03-09 01:24:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607028511] [2025-03-09 01:24:54,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:54,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:54,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:54,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:54,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:54,718 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 01:24:54,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:54,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607028511] [2025-03-09 01:24:54,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607028511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:54,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888647257] [2025-03-09 01:24:54,718 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:54,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:54,721 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 01:24:54,721 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 01:24:54,742 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:54,750 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:54,750 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:54,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:54,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:54,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:54,868 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 01:24:54,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:54,987 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 01:24:54,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888647257] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:54,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:54,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:54,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293216606] [2025-03-09 01:24:54,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:54,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:54,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:54,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:54,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:54,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 460 transitions, 6537 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:54,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:54,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:54,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:56,194 INFO L124 PetriNetUnfolderBase]: 1282/2452 cut-off events. [2025-03-09 01:24:56,194 INFO L125 PetriNetUnfolderBase]: For 33757/33757 co-relation queries the response was YES. [2025-03-09 01:24:56,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17353 conditions, 2452 events. 1282/2452 cut-off events. For 33757/33757 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15418 event pairs, 66 based on Foata normal form. 6/2458 useless extension candidates. Maximal degree in co-relation 17260. Up to 996 conditions per place. [2025-03-09 01:24:56,214 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 251 selfloop transitions, 426 changer transitions 12/690 dead transitions. [2025-03-09 01:24:56,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 690 transitions, 10609 flow [2025-03-09 01:24:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-09 01:24:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-03-09 01:24:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 426 transitions. [2025-03-09 01:24:56,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2025-03-09 01:24:56,216 INFO L175 Difference]: Start difference. First operand has 290 places, 460 transitions, 6537 flow. Second operand 48 states and 426 transitions. [2025-03-09 01:24:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 690 transitions, 10609 flow [2025-03-09 01:24:56,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 690 transitions, 10481 flow, removed 13 selfloop flow, removed 9 redundant places. [2025-03-09 01:24:56,369 INFO L231 Difference]: Finished difference. Result has 347 places, 588 transitions, 9840 flow [2025-03-09 01:24:56,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=9840, PETRI_PLACES=347, PETRI_TRANSITIONS=588} [2025-03-09 01:24:56,370 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 321 predicate places. [2025-03-09 01:24:56,370 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 588 transitions, 9840 flow [2025-03-09 01:24:56,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:56,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:56,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:56,375 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 01:24:56,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:56,571 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:56,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1001019824, now seen corresponding path program 16 times [2025-03-09 01:24:56,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:56,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823237803] [2025-03-09 01:24:56,571 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:56,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:56,573 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:56,575 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:56,575 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:56,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:56,684 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 01:24:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823237803] [2025-03-09 01:24:56,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823237803] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:56,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84100881] [2025-03-09 01:24:56,685 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:56,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:56,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:56,687 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 01:24:56,688 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 01:24:56,713 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-09 01:24:56,721 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-09 01:24:56,722 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:56,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:56,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-09 01:24:56,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:56,879 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 01:24:56,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:56,986 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 01:24:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84100881] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:56,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:56,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-03-09 01:24:56,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719815934] [2025-03-09 01:24:56,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:56,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:56,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:56,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:56,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:56,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:56,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 588 transitions, 9840 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:56,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:56,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:56,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:58,153 INFO L124 PetriNetUnfolderBase]: 1278/2446 cut-off events. [2025-03-09 01:24:58,153 INFO L125 PetriNetUnfolderBase]: For 53236/53236 co-relation queries the response was YES. [2025-03-09 01:24:58,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20061 conditions, 2446 events. 1278/2446 cut-off events. For 53236/53236 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15356 event pairs, 65 based on Foata normal form. 3/2449 useless extension candidates. Maximal degree in co-relation 19948. Up to 1123 conditions per place. [2025-03-09 01:24:58,175 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 229 selfloop transitions, 439 changer transitions 9/678 dead transitions. [2025-03-09 01:24:58,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 678 transitions, 11942 flow [2025-03-09 01:24:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-09 01:24:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-03-09 01:24:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 404 transitions. [2025-03-09 01:24:58,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3435374149659864 [2025-03-09 01:24:58,176 INFO L175 Difference]: Start difference. First operand has 347 places, 588 transitions, 9840 flow. Second operand 49 states and 404 transitions. [2025-03-09 01:24:58,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 678 transitions, 11942 flow [2025-03-09 01:24:58,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 678 transitions, 11379 flow, removed 237 selfloop flow, removed 16 redundant places. [2025-03-09 01:24:58,482 INFO L231 Difference]: Finished difference. Result has 380 places, 604 transitions, 10715 flow [2025-03-09 01:24:58,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9295, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=10715, PETRI_PLACES=380, PETRI_TRANSITIONS=604} [2025-03-09 01:24:58,482 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 354 predicate places. [2025-03-09 01:24:58,482 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 604 transitions, 10715 flow [2025-03-09 01:24:58,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 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 01:24:58,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:58,483 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:58,488 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 01:24:58,683 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,SelfDestructingSolverStorable21 [2025-03-09 01:24:58,683 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:58,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:58,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1440820973, now seen corresponding path program 17 times [2025-03-09 01:24:58,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:58,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033027312] [2025-03-09 01:24:58,684 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:58,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:58,686 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:24:58,688 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:24:58,688 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:58,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:58,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033027312] [2025-03-09 01:24:58,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033027312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:58,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386799186] [2025-03-09 01:24:58,829 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:58,831 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 01:24:58,833 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 01:24:58,859 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:24:58,867 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:24:58,867 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:58,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:58,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:24:58,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:59,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:59,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386799186] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:59,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:59,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:24:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379297039] [2025-03-09 01:24:59,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:59,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:24:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:59,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:24:59,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:24:59,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:24:59,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 604 transitions, 10715 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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 01:24:59,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:59,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:24:59,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:02,987 INFO L124 PetriNetUnfolderBase]: 2784/5110 cut-off events. [2025-03-09 01:25:02,987 INFO L125 PetriNetUnfolderBase]: For 150363/150363 co-relation queries the response was YES. [2025-03-09 01:25:03,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45612 conditions, 5110 events. 2784/5110 cut-off events. For 150363/150363 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 34754 event pairs, 92 based on Foata normal form. 45/5155 useless extension candidates. Maximal degree in co-relation 45376. Up to 1038 conditions per place. [2025-03-09 01:25:03,033 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 446 selfloop transitions, 1046 changer transitions 23/1516 dead transitions. [2025-03-09 01:25:03,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1516 transitions, 28857 flow [2025-03-09 01:25:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2025-03-09 01:25:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2025-03-09 01:25:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 1026 transitions. [2025-03-09 01:25:03,035 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37831858407079644 [2025-03-09 01:25:03,035 INFO L175 Difference]: Start difference. First operand has 380 places, 604 transitions, 10715 flow. Second operand 113 states and 1026 transitions. [2025-03-09 01:25:03,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1516 transitions, 28857 flow [2025-03-09 01:25:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1516 transitions, 28316 flow, removed 107 selfloop flow, removed 30 redundant places. [2025-03-09 01:25:03,952 INFO L231 Difference]: Finished difference. Result has 503 places, 1236 transitions, 25372 flow [2025-03-09 01:25:03,953 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10313, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=25372, PETRI_PLACES=503, PETRI_TRANSITIONS=1236} [2025-03-09 01:25:03,953 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 477 predicate places. [2025-03-09 01:25:03,953 INFO L471 AbstractCegarLoop]: Abstraction has has 503 places, 1236 transitions, 25372 flow [2025-03-09 01:25:03,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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 01:25:03,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:03,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:03,959 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 01:25:04,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:04,154 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:04,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1750356471, now seen corresponding path program 1 times [2025-03-09 01:25:04,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:04,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458426061] [2025-03-09 01:25:04,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:25:04,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:04,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:25:04,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:04,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:25:04,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:04,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458426061] [2025-03-09 01:25:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458426061] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327865272] [2025-03-09 01:25:04,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:25:04,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:04,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:04,264 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 01:25:04,265 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 01:25:04,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:25:04,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:04,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:25:04,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:04,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 01:25:04,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:04,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:04,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327865272] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:04,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:04,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-03-09 01:25:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722064557] [2025-03-09 01:25:04,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:04,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-09 01:25:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:04,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-09 01:25:04,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2025-03-09 01:25:04,610 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:04,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1236 transitions, 25372 flow. Second operand has 33 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 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 01:25:04,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:04,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:04,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:06,295 INFO L124 PetriNetUnfolderBase]: 2752/5068 cut-off events. [2025-03-09 01:25:06,295 INFO L125 PetriNetUnfolderBase]: For 295933/295933 co-relation queries the response was YES. [2025-03-09 01:25:06,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54280 conditions, 5068 events. 2752/5068 cut-off events. For 295933/295933 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34558 event pairs, 98 based on Foata normal form. 33/5101 useless extension candidates. Maximal degree in co-relation 54115. Up to 2572 conditions per place. [2025-03-09 01:25:06,352 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 611 selfloop transitions, 660 changer transitions 19/1291 dead transitions. [2025-03-09 01:25:06,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1291 transitions, 28693 flow [2025-03-09 01:25:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 01:25:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-09 01:25:06,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 227 transitions. [2025-03-09 01:25:06,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.411231884057971 [2025-03-09 01:25:06,353 INFO L175 Difference]: Start difference. First operand has 503 places, 1236 transitions, 25372 flow. Second operand 23 states and 227 transitions. [2025-03-09 01:25:06,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1291 transitions, 28693 flow [2025-03-09 01:25:08,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1291 transitions, 27473 flow, removed 533 selfloop flow, removed 22 redundant places. [2025-03-09 01:25:08,110 INFO L231 Difference]: Finished difference. Result has 502 places, 1221 transitions, 25865 flow [2025-03-09 01:25:08,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23580, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=25865, PETRI_PLACES=502, PETRI_TRANSITIONS=1221} [2025-03-09 01:25:08,112 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 476 predicate places. [2025-03-09 01:25:08,112 INFO L471 AbstractCegarLoop]: Abstraction has has 502 places, 1221 transitions, 25865 flow [2025-03-09 01:25:08,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 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 01:25:08,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:08,112 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:08,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 01:25:08,313 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,SelfDestructingSolverStorable23 [2025-03-09 01:25:08,313 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:08,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -152875977, now seen corresponding path program 18 times [2025-03-09 01:25:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660555146] [2025-03-09 01:25:08,313 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:25:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:08,315 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:25:08,318 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:08,318 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-09 01:25:08,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660555146] [2025-03-09 01:25:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660555146] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867490218] [2025-03-09 01:25:08,453 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:25:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:08,455 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 01:25:08,457 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 01:25:08,479 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-03-09 01:25:08,488 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:08,488 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-03-09 01:25:08,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:08,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:08,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:08,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867490218] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:08,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:25:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658524094] [2025-03-09 01:25:08,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:08,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:25:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:08,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:25:08,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:25:08,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:08,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1221 transitions, 25865 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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 01:25:08,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:08,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:08,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:12,304 INFO L124 PetriNetUnfolderBase]: 3358/6214 cut-off events. [2025-03-09 01:25:12,305 INFO L125 PetriNetUnfolderBase]: For 371689/371689 co-relation queries the response was YES. [2025-03-09 01:25:12,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66569 conditions, 6214 events. 3358/6214 cut-off events. For 371689/371689 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43826 event pairs, 163 based on Foata normal form. 3/6217 useless extension candidates. Maximal degree in co-relation 66282. Up to 2318 conditions per place. [2025-03-09 01:25:12,378 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 674 selfloop transitions, 1004 changer transitions 12/1691 dead transitions. [2025-03-09 01:25:12,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1691 transitions, 37921 flow [2025-03-09 01:25:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-09 01:25:12,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2025-03-09 01:25:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 586 transitions. [2025-03-09 01:25:12,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39381720430107525 [2025-03-09 01:25:12,380 INFO L175 Difference]: Start difference. First operand has 502 places, 1221 transitions, 25865 flow. Second operand 62 states and 586 transitions. [2025-03-09 01:25:12,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1691 transitions, 37921 flow [2025-03-09 01:25:14,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1691 transitions, 37492 flow, removed 92 selfloop flow, removed 15 redundant places. [2025-03-09 01:25:14,239 INFO L231 Difference]: Finished difference. Result has 547 places, 1466 transitions, 33164 flow [2025-03-09 01:25:14,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=25571, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=820, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=33164, PETRI_PLACES=547, PETRI_TRANSITIONS=1466} [2025-03-09 01:25:14,241 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 521 predicate places. [2025-03-09 01:25:14,241 INFO L471 AbstractCegarLoop]: Abstraction has has 547 places, 1466 transitions, 33164 flow [2025-03-09 01:25:14,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 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 01:25:14,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:14,241 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:14,247 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 01:25:14,445 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,SelfDestructingSolverStorable24 [2025-03-09 01:25:14,445 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:14,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:14,445 INFO L85 PathProgramCache]: Analyzing trace with hash 804614981, now seen corresponding path program 19 times [2025-03-09 01:25:14,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:14,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550341436] [2025-03-09 01:25:14,445 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:25:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:14,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:25:14,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:14,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:25:14,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550341436] [2025-03-09 01:25:14,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550341436] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162223443] [2025-03-09 01:25:14,585 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:25:14,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:14,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:14,587 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 01:25:14,588 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 01:25:14,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:25:14,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:14,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:25:14,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:14,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:14,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:14,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:14,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162223443] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:14,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:14,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:25:14,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224067589] [2025-03-09 01:25:14,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:14,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:25:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:14,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:25:14,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:25:14,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:14,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1466 transitions, 33164 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:14,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:14,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:14,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:19,401 INFO L124 PetriNetUnfolderBase]: 4237/7810 cut-off events. [2025-03-09 01:25:19,401 INFO L125 PetriNetUnfolderBase]: For 499487/499487 co-relation queries the response was YES. [2025-03-09 01:25:19,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88561 conditions, 7810 events. 4237/7810 cut-off events. For 499487/499487 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 57529 event pairs, 228 based on Foata normal form. 4/7814 useless extension candidates. Maximal degree in co-relation 88144. Up to 3450 conditions per place. [2025-03-09 01:25:19,495 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 800 selfloop transitions, 1254 changer transitions 13/2068 dead transitions. [2025-03-09 01:25:19,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 2068 transitions, 49576 flow [2025-03-09 01:25:19,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2025-03-09 01:25:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2025-03-09 01:25:19,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 822 transitions. [2025-03-09 01:25:19,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2025-03-09 01:25:19,497 INFO L175 Difference]: Start difference. First operand has 547 places, 1466 transitions, 33164 flow. Second operand 93 states and 822 transitions. [2025-03-09 01:25:19,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 2068 transitions, 49576 flow [2025-03-09 01:25:22,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 2068 transitions, 49192 flow, removed 111 selfloop flow, removed 8 redundant places. [2025-03-09 01:25:22,445 INFO L231 Difference]: Finished difference. Result has 647 places, 1777 transitions, 44365 flow [2025-03-09 01:25:22,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=32857, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=950, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=44365, PETRI_PLACES=647, PETRI_TRANSITIONS=1777} [2025-03-09 01:25:22,446 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 621 predicate places. [2025-03-09 01:25:22,447 INFO L471 AbstractCegarLoop]: Abstraction has has 647 places, 1777 transitions, 44365 flow [2025-03-09 01:25:22,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:22,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:22,447 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:22,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-09 01:25:22,647 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,SelfDestructingSolverStorable25 [2025-03-09 01:25:22,648 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:22,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:22,648 INFO L85 PathProgramCache]: Analyzing trace with hash -913134079, now seen corresponding path program 20 times [2025-03-09 01:25:22,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:22,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743694350] [2025-03-09 01:25:22,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:25:22,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:22,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:22,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:22,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:25:22,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:22,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743694350] [2025-03-09 01:25:22,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743694350] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:22,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636786262] [2025-03-09 01:25:22,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:25:22,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:22,839 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 01:25:22,840 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 01:25:22,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:22,879 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:22,879 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:25:22,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:22,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:22,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:23,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:23,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636786262] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:23,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:25:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914459376] [2025-03-09 01:25:23,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:23,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:25:23,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:23,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:25:23,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:25:23,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:23,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1777 transitions, 44365 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:23,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:23,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:31,201 INFO L124 PetriNetUnfolderBase]: 5652/10366 cut-off events. [2025-03-09 01:25:31,201 INFO L125 PetriNetUnfolderBase]: For 741104/741104 co-relation queries the response was YES. [2025-03-09 01:25:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125926 conditions, 10366 events. 5652/10366 cut-off events. For 741104/741104 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 80128 event pairs, 161 based on Foata normal form. 13/10379 useless extension candidates. Maximal degree in co-relation 125755. Up to 2812 conditions per place. [2025-03-09 01:25:31,345 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 714 selfloop transitions, 1955 changer transitions 32/2702 dead transitions. [2025-03-09 01:25:31,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 2702 transitions, 70073 flow [2025-03-09 01:25:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2025-03-09 01:25:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2025-03-09 01:25:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 1308 transitions. [2025-03-09 01:25:31,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36824324324324326 [2025-03-09 01:25:31,347 INFO L175 Difference]: Start difference. First operand has 647 places, 1777 transitions, 44365 flow. Second operand 148 states and 1308 transitions. [2025-03-09 01:25:31,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 2702 transitions, 70073 flow [2025-03-09 01:25:36,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 775 places, 2702 transitions, 69508 flow, removed 70 selfloop flow, removed 16 redundant places. [2025-03-09 01:25:36,188 INFO L231 Difference]: Finished difference. Result has 811 places, 2327 transitions, 65318 flow [2025-03-09 01:25:36,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=43868, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=65318, PETRI_PLACES=811, PETRI_TRANSITIONS=2327} [2025-03-09 01:25:36,190 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 785 predicate places. [2025-03-09 01:25:36,190 INFO L471 AbstractCegarLoop]: Abstraction has has 811 places, 2327 transitions, 65318 flow [2025-03-09 01:25:36,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:36,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:36,191 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:36,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-09 01:25:36,393 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,SelfDestructingSolverStorable26 [2025-03-09 01:25:36,393 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:36,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:36,394 INFO L85 PathProgramCache]: Analyzing trace with hash 564972643, now seen corresponding path program 21 times [2025-03-09 01:25:36,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:36,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363132715] [2025-03-09 01:25:36,394 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:25:36,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:36,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:36,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:36,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:25:36,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:36,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363132715] [2025-03-09 01:25:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363132715] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:36,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896045933] [2025-03-09 01:25:36,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:25:36,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:36,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:36,530 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 01:25:36,531 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 01:25:36,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:36,563 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:36,563 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:25:36,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:36,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:36,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:36,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896045933] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:36,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:36,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:25:36,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598978369] [2025-03-09 01:25:36,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:36,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:25:36,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:36,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:25:36,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:25:36,882 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:36,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 2327 transitions, 65318 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:36,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:36,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:36,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:43,394 INFO L124 PetriNetUnfolderBase]: 5930/10797 cut-off events. [2025-03-09 01:25:43,395 INFO L125 PetriNetUnfolderBase]: For 975290/975290 co-relation queries the response was YES. [2025-03-09 01:25:43,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145003 conditions, 10797 events. 5930/10797 cut-off events. For 975290/975290 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 83483 event pairs, 309 based on Foata normal form. 3/10800 useless extension candidates. Maximal degree in co-relation 144787. Up to 6610 conditions per place. [2025-03-09 01:25:43,558 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 977 selfloop transitions, 1574 changer transitions 12/2564 dead transitions. [2025-03-09 01:25:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 2564 transitions, 75940 flow [2025-03-09 01:25:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-09 01:25:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-03-09 01:25:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 451 transitions. [2025-03-09 01:25:43,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35455974842767296 [2025-03-09 01:25:43,560 INFO L175 Difference]: Start difference. First operand has 811 places, 2327 transitions, 65318 flow. Second operand 53 states and 451 transitions. [2025-03-09 01:25:43,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 2564 transitions, 75940 flow [2025-03-09 01:25:52,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 2564 transitions, 73946 flow, removed 433 selfloop flow, removed 41 redundant places. [2025-03-09 01:25:52,414 INFO L231 Difference]: Finished difference. Result has 827 places, 2453 transitions, 71270 flow [2025-03-09 01:25:52,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=63491, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=71270, PETRI_PLACES=827, PETRI_TRANSITIONS=2453} [2025-03-09 01:25:52,421 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 801 predicate places. [2025-03-09 01:25:52,422 INFO L471 AbstractCegarLoop]: Abstraction has has 827 places, 2453 transitions, 71270 flow [2025-03-09 01:25:52,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:52,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:52,422 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:52,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-09 01:25:52,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:52,623 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:52,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1581198117, now seen corresponding path program 22 times [2025-03-09 01:25:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:52,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965942284] [2025-03-09 01:25:52,624 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:25:52,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:52,627 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:52,629 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:52,629 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:25:52,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:52,744 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 01:25:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965942284] [2025-03-09 01:25:52,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965942284] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895784573] [2025-03-09 01:25:52,745 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:25:52,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:52,748 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 01:25:52,749 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 01:25:52,772 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:25:52,782 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:25:52,782 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:25:52,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:52,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:52,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:52,990 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 01:25:52,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:53,157 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 01:25:53,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895784573] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:53,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:53,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-03-09 01:25:53,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093086343] [2025-03-09 01:25:53,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:53,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-09 01:25:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:53,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-09 01:25:53,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2025-03-09 01:25:53,169 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-03-09 01:25:53,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 2453 transitions, 71270 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:25:53,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:53,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-03-09 01:25:53,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:26:00,878 INFO L124 PetriNetUnfolderBase]: 6144/11163 cut-off events. [2025-03-09 01:26:00,878 INFO L125 PetriNetUnfolderBase]: For 1008600/1008600 co-relation queries the response was YES. [2025-03-09 01:26:01,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152736 conditions, 11163 events. 6144/11163 cut-off events. For 1008600/1008600 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 86511 event pairs, 310 based on Foata normal form. 5/11168 useless extension candidates. Maximal degree in co-relation 152532. Up to 6283 conditions per place. [2025-03-09 01:26:01,073 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 846 selfloop transitions, 1818 changer transitions 14/2679 dead transitions. [2025-03-09 01:26:01,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 2679 transitions, 81755 flow [2025-03-09 01:26:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-09 01:26:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-03-09 01:26:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 498 transitions. [2025-03-09 01:26:01,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3516949152542373 [2025-03-09 01:26:01,074 INFO L175 Difference]: Start difference. First operand has 827 places, 2453 transitions, 71270 flow. Second operand 59 states and 498 transitions. [2025-03-09 01:26:01,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 2679 transitions, 81755 flow [2025-03-09 01:26:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 2679 transitions, 81467 flow, removed 24 selfloop flow, removed 18 redundant places. [2025-03-09 01:26:11,174 INFO L231 Difference]: Finished difference. Result has 874 places, 2578 transitions, 79567 flow [2025-03-09 01:26:11,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=70984, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=79567, PETRI_PLACES=874, PETRI_TRANSITIONS=2578} [2025-03-09 01:26:11,177 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 848 predicate places. [2025-03-09 01:26:11,177 INFO L471 AbstractCegarLoop]: Abstraction has has 874 places, 2578 transitions, 79567 flow [2025-03-09 01:26:11,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 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 01:26:11,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:26:11,178 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:26:11,184 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 01:26:11,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-09 01:26:11,379 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:26:11,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:26:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2142314373, now seen corresponding path program 23 times [2025-03-09 01:26:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:26:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911561819] [2025-03-09 01:26:11,380 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:26:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms