./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.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/parallel-misc-2.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 c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:22:37,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:22:37,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:22:37,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:22:37,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:22:37,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:22:37,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:22:37,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:22:37,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:22:37,315 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:22:37,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:22:37,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:22:37,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:22:37,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:22:37,316 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:22:37,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:22:37,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:22:37,318 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:22:37,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:22:37,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:22:37,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:22:37,319 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 -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2025-03-09 01:22:37,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:22:37,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:22:37,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:22:37,561 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:22:37,561 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:22:37,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2025-03-09 01:22:38,652 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954ccaea2/f7a5249a2fa14cd1a948684aae160309/FLAGd86ce7d4b [2025-03-09 01:22:38,876 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:22:38,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2025-03-09 01:22:38,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954ccaea2/f7a5249a2fa14cd1a948684aae160309/FLAGd86ce7d4b [2025-03-09 01:22:39,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954ccaea2/f7a5249a2fa14cd1a948684aae160309 [2025-03-09 01:22:39,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:22:39,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:22:39,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:22:39,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:22:39,245 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:22:39,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bad044d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39, skipping insertion in model container [2025-03-09 01:22:39,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:22:39,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:22:39,379 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:22:39,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:22:39,400 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:22:39,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39 WrapperNode [2025-03-09 01:22:39,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:22:39,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:22:39,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:22:39,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:22:39,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,421 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2025-03-09 01:22:39,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:22:39,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:22:39,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:22:39,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:22:39,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,442 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 01:22:39,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,445 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:22:39,448 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:22:39,448 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:22:39,448 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:22:39,453 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (1/1) ... [2025-03-09 01:22:39,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:22:39,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:39,476 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 01:22:39,479 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 01:22:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:22:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:22:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:22:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:22:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:22:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:22:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:22:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:22:39,500 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 01:22:39,564 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:22:39,566 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:22:39,681 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:22:39,681 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:22:39,796 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:22:39,796 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:22:39,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:22:39 BoogieIcfgContainer [2025-03-09 01:22:39,796 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:22:39,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:22:39,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:22:39,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:22:39,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:22:39" (1/3) ... [2025-03-09 01:22:39,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6907632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:22:39, skipping insertion in model container [2025-03-09 01:22:39,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:22:39" (2/3) ... [2025-03-09 01:22:39,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6907632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:22:39, skipping insertion in model container [2025-03-09 01:22:39,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:22:39" (3/3) ... [2025-03-09 01:22:39,805 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2025-03-09 01:22:39,815 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:22:39,817 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-2.wvr.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-09 01:22:39,817 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:22:39,863 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:22:39,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 82 flow [2025-03-09 01:22:39,920 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2025-03-09 01:22:39,922 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:22:39,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 4/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 58 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-03-09 01:22:39,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 82 flow [2025-03-09 01:22:39,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 74 flow [2025-03-09 01:22:39,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:22:39,941 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;@5151f191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:22:39,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-09 01:22:39,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:22:39,951 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-03-09 01:22:39,951 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:22:39,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:39,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:39,952 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 01:22:39,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1990580503, now seen corresponding path program 1 times [2025-03-09 01:22:39,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001069129] [2025-03-09 01:22:39,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:40,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:22:40,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:22:40,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:40,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:40,203 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 01:22:40,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:40,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001069129] [2025-03-09 01:22:40,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001069129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:40,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:22:40,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247693390] [2025-03-09 01:22:40,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:40,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:22:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:40,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:22:40,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:22:40,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2025-03-09 01:22:40,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:40,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2025-03-09 01:22:40,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:40,350 INFO L124 PetriNetUnfolderBase]: 146/286 cut-off events. [2025-03-09 01:22:40,350 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-03-09 01:22:40,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 146/286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1130 event pairs, 12 based on Foata normal form. 2/255 useless extension candidates. Maximal degree in co-relation 458. Up to 186 conditions per place. [2025-03-09 01:22:40,354 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 21 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2025-03-09 01:22:40,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 159 flow [2025-03-09 01:22:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:22:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:22:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-09 01:22:40,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2025-03-09 01:22:40,364 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 74 flow. Second operand 3 states and 73 transitions. [2025-03-09 01:22:40,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 159 flow [2025-03-09 01:22:40,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:22:40,369 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 101 flow [2025-03-09 01:22:40,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2025-03-09 01:22:40,373 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2025-03-09 01:22:40,373 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 101 flow [2025-03-09 01:22:40,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:40,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:40,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:22:40,374 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 01:22:40,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash 373410655, now seen corresponding path program 1 times [2025-03-09 01:22:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007414011] [2025-03-09 01:22:40,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:40,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:40,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:22:40,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:40,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:40,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:40,498 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 01:22:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007414011] [2025-03-09 01:22:40,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007414011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:40,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:40,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478375174] [2025-03-09 01:22:40,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:40,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:40,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:40,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:40,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:40,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:40,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:40,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:40,655 INFO L124 PetriNetUnfolderBase]: 225/415 cut-off events. [2025-03-09 01:22:40,656 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2025-03-09 01:22:40,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 415 events. 225/415 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1862 event pairs, 26 based on Foata normal form. 0/319 useless extension candidates. Maximal degree in co-relation 322. Up to 182 conditions per place. [2025-03-09 01:22:40,659 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 45 selfloop transitions, 10 changer transitions 5/69 dead transitions. [2025-03-09 01:22:40,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 69 transitions, 326 flow [2025-03-09 01:22:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:22:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:22:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2025-03-09 01:22:40,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2025-03-09 01:22:40,661 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 101 flow. Second operand 5 states and 115 transitions. [2025-03-09 01:22:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 69 transitions, 326 flow [2025-03-09 01:22:40,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 69 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:40,663 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 155 flow [2025-03-09 01:22:40,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2025-03-09 01:22:40,664 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2025-03-09 01:22:40,664 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 155 flow [2025-03-09 01:22:40,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:40,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:40,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:22:40,664 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 01:22:40,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:40,665 INFO L85 PathProgramCache]: Analyzing trace with hash 20330011, now seen corresponding path program 2 times [2025-03-09 01:22:40,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480965823] [2025-03-09 01:22:40,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:40,673 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:22:40,690 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:22:40,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:22:40,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:40,777 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 01:22:40,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:40,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480965823] [2025-03-09 01:22:40,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480965823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:40,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:40,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:40,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064873075] [2025-03-09 01:22:40,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:40,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:40,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:40,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:40,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:40,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:40,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:40,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:40,910 INFO L124 PetriNetUnfolderBase]: 213/424 cut-off events. [2025-03-09 01:22:40,910 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2025-03-09 01:22:40,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 424 events. 213/424 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1956 event pairs, 12 based on Foata normal form. 12/404 useless extension candidates. Maximal degree in co-relation 393. Up to 112 conditions per place. [2025-03-09 01:22:40,914 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 44 selfloop transitions, 12 changer transitions 4/69 dead transitions. [2025-03-09 01:22:40,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 69 transitions, 382 flow [2025-03-09 01:22:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:22:40,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:22:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2025-03-09 01:22:40,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2025-03-09 01:22:40,916 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 155 flow. Second operand 5 states and 112 transitions. [2025-03-09 01:22:40,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 69 transitions, 382 flow [2025-03-09 01:22:40,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:40,918 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 241 flow [2025-03-09 01:22:40,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2025-03-09 01:22:40,919 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2025-03-09 01:22:40,919 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 241 flow [2025-03-09 01:22:40,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:40,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:40,920 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:40,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:22:40,921 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 01:22:40,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:40,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2038380463, now seen corresponding path program 1 times [2025-03-09 01:22:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:40,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189757303] [2025-03-09 01:22:40,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:40,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:40,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:22:40,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:22:40,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:40,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:40,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189757303] [2025-03-09 01:22:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189757303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:40,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:40,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:40,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726504275] [2025-03-09 01:22:40,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:40,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:40,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:40,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:41,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:41,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:41,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:41,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:41,123 INFO L124 PetriNetUnfolderBase]: 212/413 cut-off events. [2025-03-09 01:22:41,123 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2025-03-09 01:22:41,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 413 events. 212/413 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1937 event pairs, 22 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 668. Up to 191 conditions per place. [2025-03-09 01:22:41,126 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 52 selfloop transitions, 9 changer transitions 2/72 dead transitions. [2025-03-09 01:22:41,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 482 flow [2025-03-09 01:22:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:22:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:22:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-03-09 01:22:41,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2025-03-09 01:22:41,127 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 241 flow. Second operand 5 states and 111 transitions. [2025-03-09 01:22:41,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 482 flow [2025-03-09 01:22:41,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 478 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:41,130 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 292 flow [2025-03-09 01:22:41,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2025-03-09 01:22:41,130 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2025-03-09 01:22:41,130 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 292 flow [2025-03-09 01:22:41,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:41,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:41,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:22:41,131 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 01:22:41,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1404637501, now seen corresponding path program 2 times [2025-03-09 01:22:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:41,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933108938] [2025-03-09 01:22:41,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:41,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:41,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-03-09 01:22:41,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-09 01:22:41,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:22:41,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:41,215 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 01:22:41,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933108938] [2025-03-09 01:22:41,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933108938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:41,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958959406] [2025-03-09 01:22:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:41,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:41,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:41,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:41,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:41,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:41,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:41,320 INFO L124 PetriNetUnfolderBase]: 201/418 cut-off events. [2025-03-09 01:22:41,321 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2025-03-09 01:22:41,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 418 events. 201/418 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1817 event pairs, 10 based on Foata normal form. 17/401 useless extension candidates. Maximal degree in co-relation 896. Up to 117 conditions per place. [2025-03-09 01:22:41,323 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 50 selfloop transitions, 12 changer transitions 1/72 dead transitions. [2025-03-09 01:22:41,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 534 flow [2025-03-09 01:22:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:22:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:22:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-09 01:22:41,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2025-03-09 01:22:41,325 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 292 flow. Second operand 5 states and 108 transitions. [2025-03-09 01:22:41,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 534 flow [2025-03-09 01:22:41,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 518 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:41,328 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 355 flow [2025-03-09 01:22:41,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2025-03-09 01:22:41,329 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2025-03-09 01:22:41,329 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 355 flow [2025-03-09 01:22:41,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:41,329 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:41,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:22:41,330 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 01:22:41,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1740231783, now seen corresponding path program 1 times [2025-03-09 01:22:41,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:41,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112624449] [2025-03-09 01:22:41,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:41,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:41,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:22:41,369 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:22:41,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:41,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:41,532 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 01:22:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112624449] [2025-03-09 01:22:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112624449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:41,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:22:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076365761] [2025-03-09 01:22:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:41,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:22:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:41,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:22:41,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:22:41,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 34 [2025-03-09 01:22:41,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 355 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:41,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 34 [2025-03-09 01:22:41,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:41,701 INFO L124 PetriNetUnfolderBase]: 251/511 cut-off events. [2025-03-09 01:22:41,701 INFO L125 PetriNetUnfolderBase]: For 1454/1502 co-relation queries the response was YES. [2025-03-09 01:22:41,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 511 events. 251/511 cut-off events. For 1454/1502 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2376 event pairs, 14 based on Foata normal form. 20/470 useless extension candidates. Maximal degree in co-relation 712. Up to 163 conditions per place. [2025-03-09 01:22:41,704 INFO L140 encePairwiseOnDemand]: 24/34 looper letters, 47 selfloop transitions, 23 changer transitions 0/84 dead transitions. [2025-03-09 01:22:41,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 694 flow [2025-03-09 01:22:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2025-03-09 01:22:41,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6323529411764706 [2025-03-09 01:22:41,705 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 355 flow. Second operand 6 states and 129 transitions. [2025-03-09 01:22:41,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 694 flow [2025-03-09 01:22:41,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 679 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:41,710 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 490 flow [2025-03-09 01:22:41,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2025-03-09 01:22:41,711 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2025-03-09 01:22:41,711 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 490 flow [2025-03-09 01:22:41,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,711 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:41,711 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:41,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:22:41,711 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 01:22:41,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:41,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1572322843, now seen corresponding path program 2 times [2025-03-09 01:22:41,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:41,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510235260] [2025-03-09 01:22:41,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:41,716 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-09 01:22:41,725 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-09 01:22:41,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:22:41,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:41,820 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 01:22:41,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:41,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510235260] [2025-03-09 01:22:41,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510235260] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:41,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:41,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:22:41,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224528564] [2025-03-09 01:22:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:41,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:22:41,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:41,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:22:41,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:22:41,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:41,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 490 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:41,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:41,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:41,959 INFO L124 PetriNetUnfolderBase]: 448/876 cut-off events. [2025-03-09 01:22:41,959 INFO L125 PetriNetUnfolderBase]: For 2962/2962 co-relation queries the response was YES. [2025-03-09 01:22:41,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 876 events. 448/876 cut-off events. For 2962/2962 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4534 event pairs, 41 based on Foata normal form. 21/828 useless extension candidates. Maximal degree in co-relation 1341. Up to 287 conditions per place. [2025-03-09 01:22:41,965 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 74 selfloop transitions, 10 changer transitions 0/93 dead transitions. [2025-03-09 01:22:41,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 93 transitions, 919 flow [2025-03-09 01:22:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:22:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:22:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-09 01:22:41,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2025-03-09 01:22:41,966 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 490 flow. Second operand 5 states and 108 transitions. [2025-03-09 01:22:41,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 93 transitions, 919 flow [2025-03-09 01:22:41,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 906 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:41,972 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 560 flow [2025-03-09 01:22:41,972 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2025-03-09 01:22:41,973 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2025-03-09 01:22:41,973 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 560 flow [2025-03-09 01:22:41,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:41,973 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:41,973 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:41,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:22:41,973 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 01:22:41,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:41,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2009332949, now seen corresponding path program 3 times [2025-03-09 01:22:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406240758] [2025-03-09 01:22:41,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:41,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-03-09 01:22:41,993 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 28 statements. [2025-03-09 01:22:41,993 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:41,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406240758] [2025-03-09 01:22:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406240758] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436950922] [2025-03-09 01:22:42,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:42,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:42,113 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 01:22:42,114 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 01:22:42,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 3 equivalence classes. [2025-03-09 01:22:42,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 28 statements. [2025-03-09 01:22:42,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:42,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:42,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 01:22:42,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:42,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:42,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436950922] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:42,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:42,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-03-09 01:22:42,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189337276] [2025-03-09 01:22:42,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:42,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:22:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:42,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:22:42,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:22:42,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:42,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 560 flow. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:42,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:42,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:42,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:43,032 INFO L124 PetriNetUnfolderBase]: 704/1384 cut-off events. [2025-03-09 01:22:43,033 INFO L125 PetriNetUnfolderBase]: For 4942/4942 co-relation queries the response was YES. [2025-03-09 01:22:43,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5181 conditions, 1384 events. 704/1384 cut-off events. For 4942/4942 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7570 event pairs, 49 based on Foata normal form. 18/1297 useless extension candidates. Maximal degree in co-relation 2189. Up to 398 conditions per place. [2025-03-09 01:22:43,046 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 98 selfloop transitions, 25 changer transitions 0/132 dead transitions. [2025-03-09 01:22:43,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 132 transitions, 1299 flow [2025-03-09 01:22:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:22:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:22:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2025-03-09 01:22:43,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5970588235294118 [2025-03-09 01:22:43,047 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 560 flow. Second operand 10 states and 203 transitions. [2025-03-09 01:22:43,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 132 transitions, 1299 flow [2025-03-09 01:22:43,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 1294 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:43,057 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 821 flow [2025-03-09 01:22:43,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=821, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2025-03-09 01:22:43,058 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2025-03-09 01:22:43,058 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 821 flow [2025-03-09 01:22:43,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 10 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:43,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:43,058 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:43,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 01:22:43,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:43,259 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 01:22:43,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1109722839, now seen corresponding path program 4 times [2025-03-09 01:22:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:43,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328508892] [2025-03-09 01:22:43,260 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:22:43,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:43,268 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:43,290 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:43,290 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:22:43,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:43,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:43,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328508892] [2025-03-09 01:22:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328508892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:43,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134948476] [2025-03-09 01:22:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:43,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:43,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:43,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:43,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:43,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 77 transitions, 821 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:43,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:43,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:43,576 INFO L124 PetriNetUnfolderBase]: 923/1894 cut-off events. [2025-03-09 01:22:43,577 INFO L125 PetriNetUnfolderBase]: For 10220/10297 co-relation queries the response was YES. [2025-03-09 01:22:43,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1894 events. 923/1894 cut-off events. For 10220/10297 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11673 event pairs, 142 based on Foata normal form. 19/1746 useless extension candidates. Maximal degree in co-relation 7395. Up to 690 conditions per place. [2025-03-09 01:22:43,588 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 75 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2025-03-09 01:22:43,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 1652 flow [2025-03-09 01:22:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:22:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:22:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-09 01:22:43,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2025-03-09 01:22:43,590 INFO L175 Difference]: Start difference. First operand has 79 places, 77 transitions, 821 flow. Second operand 4 states and 91 transitions. [2025-03-09 01:22:43,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 1652 flow [2025-03-09 01:22:43,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1621 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:43,607 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 1198 flow [2025-03-09 01:22:43,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1198, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2025-03-09 01:22:43,608 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2025-03-09 01:22:43,608 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 1198 flow [2025-03-09 01:22:43,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:43,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:43,608 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:43,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 01:22:43,609 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 01:22:43,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -209930424, now seen corresponding path program 1 times [2025-03-09 01:22:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:43,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972844005] [2025-03-09 01:22:43,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:43,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:43,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:22:43,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:43,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:43,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:43,737 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 01:22:43,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:43,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972844005] [2025-03-09 01:22:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972844005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:43,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:43,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348160253] [2025-03-09 01:22:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:43,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:43,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:43,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:43,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:43,741 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:43,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 1198 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:43,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:43,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:43,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:44,110 INFO L124 PetriNetUnfolderBase]: 1988/3930 cut-off events. [2025-03-09 01:22:44,110 INFO L125 PetriNetUnfolderBase]: For 36186/36428 co-relation queries the response was YES. [2025-03-09 01:22:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19001 conditions, 3930 events. 1988/3930 cut-off events. For 36186/36428 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29546 event pairs, 675 based on Foata normal form. 46/3728 useless extension candidates. Maximal degree in co-relation 17959. Up to 1247 conditions per place. [2025-03-09 01:22:44,188 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 153 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2025-03-09 01:22:44,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 197 transitions, 3143 flow [2025-03-09 01:22:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:22:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:22:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2025-03-09 01:22:44,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6838235294117647 [2025-03-09 01:22:44,190 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 1198 flow. Second operand 4 states and 93 transitions. [2025-03-09 01:22:44,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 197 transitions, 3143 flow [2025-03-09 01:22:44,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 197 transitions, 3126 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-09 01:22:44,225 INFO L231 Difference]: Finished difference. Result has 88 places, 111 transitions, 1488 flow [2025-03-09 01:22:44,225 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1488, PETRI_PLACES=88, PETRI_TRANSITIONS=111} [2025-03-09 01:22:44,226 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2025-03-09 01:22:44,226 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 111 transitions, 1488 flow [2025-03-09 01:22:44,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:44,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:44,226 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:44,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 01:22:44,226 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 01:22:44,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash -587372674, now seen corresponding path program 1 times [2025-03-09 01:22:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759678348] [2025-03-09 01:22:44,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:44,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:22:44,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:44,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:44,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:44,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759678348] [2025-03-09 01:22:44,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759678348] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:44,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135972972] [2025-03-09 01:22:44,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:44,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:44,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:44,368 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 01:22:44,368 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 01:22:44,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:22:44,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:44,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:44,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:44,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:22:44,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:44,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:44,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135972972] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:44,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:44,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-09 01:22:44,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10194743] [2025-03-09 01:22:44,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:44,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:22:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:44,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:22:44,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:22:44,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2025-03-09 01:22:44,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 111 transitions, 1488 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:44,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2025-03-09 01:22:44,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:45,233 INFO L124 PetriNetUnfolderBase]: 2698/5962 cut-off events. [2025-03-09 01:22:45,233 INFO L125 PetriNetUnfolderBase]: For 59210/59535 co-relation queries the response was YES. [2025-03-09 01:22:45,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30538 conditions, 5962 events. 2698/5962 cut-off events. For 59210/59535 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 49589 event pairs, 532 based on Foata normal form. 79/5885 useless extension candidates. Maximal degree in co-relation 28691. Up to 2340 conditions per place. [2025-03-09 01:22:45,278 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 217 selfloop transitions, 25 changer transitions 1/271 dead transitions. [2025-03-09 01:22:45,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 271 transitions, 4302 flow [2025-03-09 01:22:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2025-03-09 01:22:45,279 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7549019607843137 [2025-03-09 01:22:45,279 INFO L175 Difference]: Start difference. First operand has 88 places, 111 transitions, 1488 flow. Second operand 6 states and 154 transitions. [2025-03-09 01:22:45,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 271 transitions, 4302 flow [2025-03-09 01:22:45,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 271 transitions, 4302 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:45,354 INFO L231 Difference]: Finished difference. Result has 94 places, 127 transitions, 1627 flow [2025-03-09 01:22:45,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1627, PETRI_PLACES=94, PETRI_TRANSITIONS=127} [2025-03-09 01:22:45,354 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2025-03-09 01:22:45,355 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 1627 flow [2025-03-09 01:22:45,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:45,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:45,355 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:45,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 01:22:45,559 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,SelfDestructingSolverStorable10 [2025-03-09 01:22:45,559 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 01:22:45,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1648965916, now seen corresponding path program 1 times [2025-03-09 01:22:45,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:45,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522804442] [2025-03-09 01:22:45,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:22:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:45,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-09 01:22:45,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:45,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:45,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:45,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:45,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522804442] [2025-03-09 01:22:45,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522804442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:45,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:22:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634843706] [2025-03-09 01:22:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:45,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:22:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:45,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:22:45,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:22:45,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:45,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 127 transitions, 1627 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:45,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:45,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:45,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:46,194 INFO L124 PetriNetUnfolderBase]: 2527/5073 cut-off events. [2025-03-09 01:22:46,194 INFO L125 PetriNetUnfolderBase]: For 55182/55546 co-relation queries the response was YES. [2025-03-09 01:22:46,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27383 conditions, 5073 events. 2527/5073 cut-off events. For 55182/55546 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 38760 event pairs, 484 based on Foata normal form. 148/5076 useless extension candidates. Maximal degree in co-relation 26081. Up to 1945 conditions per place. [2025-03-09 01:22:46,226 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 146 selfloop transitions, 19 changer transitions 0/190 dead transitions. [2025-03-09 01:22:46,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 190 transitions, 2897 flow [2025-03-09 01:22:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:22:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:22:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-03-09 01:22:46,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6544117647058824 [2025-03-09 01:22:46,228 INFO L175 Difference]: Start difference. First operand has 94 places, 127 transitions, 1627 flow. Second operand 4 states and 89 transitions. [2025-03-09 01:22:46,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 190 transitions, 2897 flow [2025-03-09 01:22:46,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 190 transitions, 2847 flow, removed 25 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:46,272 INFO L231 Difference]: Finished difference. Result has 99 places, 119 transitions, 1567 flow [2025-03-09 01:22:46,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1567, PETRI_PLACES=99, PETRI_TRANSITIONS=119} [2025-03-09 01:22:46,274 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 65 predicate places. [2025-03-09 01:22:46,275 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 119 transitions, 1567 flow [2025-03-09 01:22:46,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:46,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:46,275 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:46,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 01:22:46,275 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 01:22:46,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:46,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1508692104, now seen corresponding path program 2 times [2025-03-09 01:22:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:46,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801431560] [2025-03-09 01:22:46,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:46,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:46,297 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:46,297 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:46,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:46,405 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 01:22:46,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:46,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801431560] [2025-03-09 01:22:46,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801431560] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:46,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17187932] [2025-03-09 01:22:46,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:46,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:46,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:46,408 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 01:22:46,409 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 01:22:46,440 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:46,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:46,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:46,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:46,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:22:46,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:46,532 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 01:22:46,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:46,597 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 01:22:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17187932] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:46,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-09 01:22:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113360102] [2025-03-09 01:22:46,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:46,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:22:46,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:46,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:22:46,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:22:46,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2025-03-09 01:22:46,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 119 transitions, 1567 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:46,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:46,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2025-03-09 01:22:46,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:47,258 INFO L124 PetriNetUnfolderBase]: 2683/6085 cut-off events. [2025-03-09 01:22:47,258 INFO L125 PetriNetUnfolderBase]: For 71556/71860 co-relation queries the response was YES. [2025-03-09 01:22:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33303 conditions, 6085 events. 2683/6085 cut-off events. For 71556/71860 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 51699 event pairs, 538 based on Foata normal form. 100/6011 useless extension candidates. Maximal degree in co-relation 31653. Up to 2499 conditions per place. [2025-03-09 01:22:47,292 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 226 selfloop transitions, 29 changer transitions 1/285 dead transitions. [2025-03-09 01:22:47,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 285 transitions, 4591 flow [2025-03-09 01:22:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:47,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-03-09 01:22:47,293 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-09 01:22:47,293 INFO L175 Difference]: Start difference. First operand has 99 places, 119 transitions, 1567 flow. Second operand 6 states and 153 transitions. [2025-03-09 01:22:47,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 285 transitions, 4591 flow [2025-03-09 01:22:47,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 285 transitions, 4591 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:47,352 INFO L231 Difference]: Finished difference. Result has 106 places, 138 transitions, 1758 flow [2025-03-09 01:22:47,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1758, PETRI_PLACES=106, PETRI_TRANSITIONS=138} [2025-03-09 01:22:47,352 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 72 predicate places. [2025-03-09 01:22:47,353 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 138 transitions, 1758 flow [2025-03-09 01:22:47,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:47,353 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:47,353 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:47,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:22:47,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:47,554 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 01:22:47,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1614299994, now seen corresponding path program 3 times [2025-03-09 01:22:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133824982] [2025-03-09 01:22:47,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:47,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:47,568 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:47,568 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:47,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133824982] [2025-03-09 01:22:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133824982] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432442220] [2025-03-09 01:22:47,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:47,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:47,666 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 01:22:47,668 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 01:22:47,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:47,712 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:47,712 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:22:47,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:47,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-09 01:22:47,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:47,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:47,767 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432442220] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:47,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-09 01:22:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067259920] [2025-03-09 01:22:47,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:47,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:22:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:47,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:22:47,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:22:47,880 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2025-03-09 01:22:47,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 138 transitions, 1758 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:47,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:47,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2025-03-09 01:22:47,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:48,833 INFO L124 PetriNetUnfolderBase]: 3513/8031 cut-off events. [2025-03-09 01:22:48,833 INFO L125 PetriNetUnfolderBase]: For 98709/99141 co-relation queries the response was YES. [2025-03-09 01:22:48,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45917 conditions, 8031 events. 3513/8031 cut-off events. For 98709/99141 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 72433 event pairs, 647 based on Foata normal form. 160/7996 useless extension candidates. Maximal degree in co-relation 43514. Up to 3010 conditions per place. [2025-03-09 01:22:48,896 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 234 selfloop transitions, 44 changer transitions 1/308 dead transitions. [2025-03-09 01:22:48,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 308 transitions, 4906 flow [2025-03-09 01:22:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2025-03-09 01:22:48,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-09 01:22:48,897 INFO L175 Difference]: Start difference. First operand has 106 places, 138 transitions, 1758 flow. Second operand 6 states and 153 transitions. [2025-03-09 01:22:48,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 308 transitions, 4906 flow [2025-03-09 01:22:49,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 308 transitions, 4884 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:49,109 INFO L231 Difference]: Finished difference. Result has 115 places, 161 transitions, 2091 flow [2025-03-09 01:22:49,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2091, PETRI_PLACES=115, PETRI_TRANSITIONS=161} [2025-03-09 01:22:49,109 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 81 predicate places. [2025-03-09 01:22:49,109 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 161 transitions, 2091 flow [2025-03-09 01:22:49,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:49,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:49,109 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:49,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:22:49,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:49,310 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 01:22:49,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:49,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1541630632, now seen corresponding path program 4 times [2025-03-09 01:22:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:49,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338972654] [2025-03-09 01:22:49,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:22:49,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:49,316 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:49,322 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:49,326 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:22:49,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338972654] [2025-03-09 01:22:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338972654] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792696945] [2025-03-09 01:22:49,418 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:22:49,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:49,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:49,420 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 01:22:49,422 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 01:22:49,450 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-03-09 01:22:49,463 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-03-09 01:22:49,463 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:22:49,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:49,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 01:22:49,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:49,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792696945] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:49,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:49,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-03-09 01:22:49,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347734618] [2025-03-09 01:22:49,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:49,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:22:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:49,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:22:49,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:22:49,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2025-03-09 01:22:49,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 161 transitions, 2091 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:49,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:49,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2025-03-09 01:22:49,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:50,474 INFO L124 PetriNetUnfolderBase]: 3768/8709 cut-off events. [2025-03-09 01:22:50,474 INFO L125 PetriNetUnfolderBase]: For 112282/112803 co-relation queries the response was YES. [2025-03-09 01:22:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51721 conditions, 8709 events. 3768/8709 cut-off events. For 112282/112803 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 80089 event pairs, 755 based on Foata normal form. 203/8692 useless extension candidates. Maximal degree in co-relation 49005. Up to 4402 conditions per place. [2025-03-09 01:22:50,527 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 246 selfloop transitions, 33 changer transitions 1/309 dead transitions. [2025-03-09 01:22:50,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 309 transitions, 4955 flow [2025-03-09 01:22:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 01:22:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 01:22:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2025-03-09 01:22:50,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2025-03-09 01:22:50,528 INFO L175 Difference]: Start difference. First operand has 115 places, 161 transitions, 2091 flow. Second operand 6 states and 151 transitions. [2025-03-09 01:22:50,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 309 transitions, 4955 flow [2025-03-09 01:22:50,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 309 transitions, 4943 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-09 01:22:50,659 INFO L231 Difference]: Finished difference. Result has 123 places, 176 transitions, 2341 flow [2025-03-09 01:22:50,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2341, PETRI_PLACES=123, PETRI_TRANSITIONS=176} [2025-03-09 01:22:50,660 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 89 predicate places. [2025-03-09 01:22:50,660 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 176 transitions, 2341 flow [2025-03-09 01:22:50,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:50,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:50,660 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:50,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:50,865 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,SelfDestructingSolverStorable14 [2025-03-09 01:22:50,865 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 01:22:50,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:50,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1867607410, now seen corresponding path program 5 times [2025-03-09 01:22:50,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:50,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394022639] [2025-03-09 01:22:50,866 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:50,870 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 3 equivalence classes. [2025-03-09 01:22:50,884 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-09 01:22:50,885 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:22:50,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:51,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:51,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394022639] [2025-03-09 01:22:51,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394022639] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:51,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846163827] [2025-03-09 01:22:51,008 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:51,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:51,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:51,010 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 01:22:51,012 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 01:22:51,043 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 3 equivalence classes. [2025-03-09 01:22:51,083 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-09 01:22:51,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:22:51,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:51,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:22:51,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:51,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846163827] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:51,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2025-03-09 01:22:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347143794] [2025-03-09 01:22:51,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:51,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-09 01:22:51,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:51,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-09 01:22:51,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-03-09 01:22:51,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2025-03-09 01:22:51,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 176 transitions, 2341 flow. Second operand has 19 states, 19 states have (on average 15.68421052631579) internal successors, (298), 19 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:51,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:51,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2025-03-09 01:22:51,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:58,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:03,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:08,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:12,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:18,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:36,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:23:44,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:24:13,486 INFO L124 PetriNetUnfolderBase]: 21279/43402 cut-off events. [2025-03-09 01:24:13,486 INFO L125 PetriNetUnfolderBase]: For 552278/552278 co-relation queries the response was YES. [2025-03-09 01:24:13,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263518 conditions, 43402 events. 21279/43402 cut-off events. For 552278/552278 co-relation queries the response was YES. Maximal size of possible extension queue 1556. Compared 440014 event pairs, 492 based on Foata normal form. 2190/45591 useless extension candidates. Maximal degree in co-relation 253664. Up to 7845 conditions per place. [2025-03-09 01:24:14,028 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 1550 selfloop transitions, 364 changer transitions 1/1928 dead transitions. [2025-03-09 01:24:14,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1928 transitions, 25863 flow [2025-03-09 01:24:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-09 01:24:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-09 01:24:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 1153 transitions. [2025-03-09 01:24:14,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5949432404540763 [2025-03-09 01:24:14,032 INFO L175 Difference]: Start difference. First operand has 123 places, 176 transitions, 2341 flow. Second operand 57 states and 1153 transitions. [2025-03-09 01:24:14,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1928 transitions, 25863 flow [2025-03-09 01:24:15,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1928 transitions, 25348 flow, removed 231 selfloop flow, removed 1 redundant places. [2025-03-09 01:24:15,106 INFO L231 Difference]: Finished difference. Result has 212 places, 510 transitions, 9676 flow [2025-03-09 01:24:15,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=9676, PETRI_PLACES=212, PETRI_TRANSITIONS=510} [2025-03-09 01:24:15,106 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 178 predicate places. [2025-03-09 01:24:15,107 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 510 transitions, 9676 flow [2025-03-09 01:24:15,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.68421052631579) internal successors, (298), 19 states have internal predecessors, (298), 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 01:24:15,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:15,107 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:15,113 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 01:24:15,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 01:24:15,311 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 01:24:15,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:15,312 INFO L85 PathProgramCache]: Analyzing trace with hash 60588835, now seen corresponding path program 6 times [2025-03-09 01:24:15,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:15,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685083732] [2025-03-09 01:24:15,312 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:15,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:15,317 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 2 equivalence classes. [2025-03-09 01:24:15,335 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:24:15,335 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:24:15,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685083732] [2025-03-09 01:24:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685083732] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721580282] [2025-03-09 01:24:15,540 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:24:15,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:15,546 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 01:24:15,547 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 01:24:15,576 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 2 equivalence classes. [2025-03-09 01:24:15,625 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-03-09 01:24:15,625 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:24:15,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:15,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 01:24:15,630 INFO L279 TraceCheckSpWp]: Computing forward predicates...