./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:59:54,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:59:54,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:59:54,211 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:59:54,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:59:54,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:59:54,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:59:54,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:59:54,228 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:59:54,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:59:54,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:59:54,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:59:54,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:59:54,230 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:59:54,230 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:54,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:59:54,231 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:59:54,232 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-03-17 13:59:54,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:59:54,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:59:54,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:59:54,459 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:59:54,459 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:59:54,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-17 13:59:55,551 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e612ecc/eb605cbdfbe448c09cd86635f8313d94/FLAGe65f8d6fc [2025-03-17 13:59:55,791 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:59:55,791 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-17 13:59:55,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e612ecc/eb605cbdfbe448c09cd86635f8313d94/FLAGe65f8d6fc [2025-03-17 13:59:56,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41e612ecc/eb605cbdfbe448c09cd86635f8313d94 [2025-03-17 13:59:56,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:59:56,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:59:56,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:56,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:59:56,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:59:56,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df36736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56, skipping insertion in model container [2025-03-17 13:59:56,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,163 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:59:56,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:56,406 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:59:56,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:56,480 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:59:56,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56 WrapperNode [2025-03-17 13:59:56,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:56,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:56,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:59:56,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:59:56,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,514 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-17 13:59:56,515 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:56,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:59:56,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:59:56,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:59:56,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,534 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]. [2025-03-17 13:59:56,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,538 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:59:56,549 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:59:56,550 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:59:56,550 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:59:56,551 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (1/1) ... [2025-03-17 13:59:56,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:56,576 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) [2025-03-17 13:59:56,578 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 [2025-03-17 13:59:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 13:59:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 13:59:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 13:59:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 13:59:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 13:59:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:59:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 13:59:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 13:59:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:59:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:59:56,597 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 13:59:56,692 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:59:56,694 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:59:56,795 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 13:59:56,795 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:59:56,840 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:59:56,840 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:59:56,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:56 BoogieIcfgContainer [2025-03-17 13:59:56,841 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:59:56,842 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:59:56,842 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:59:56,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:59:56,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:59:56" (1/3) ... [2025-03-17 13:59:56,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cfd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:56, skipping insertion in model container [2025-03-17 13:59:56,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:56" (2/3) ... [2025-03-17 13:59:56,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e3cfd88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:56, skipping insertion in model container [2025-03-17 13:59:56,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:56" (3/3) ... [2025-03-17 13:59:56,848 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-03-17 13:59:56,859 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:59:56,861 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 13:59:56,861 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 13:59:56,902 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 13:59:56,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 13:59:56,944 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-17 13:59:56,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:56,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-17 13:59:56,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 13:59:56,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-17 13:59:56,961 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:59:56,969 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;@325f5dd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:59:56,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 13:59:56,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 13:59:56,979 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-17 13:59:56,980 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:56,980 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:56,980 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:56,981 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:56,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:56,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746502, now seen corresponding path program 1 times [2025-03-17 13:59:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:56,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122024041] [2025-03-17 13:59:56,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:57,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:59:57,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:59:57,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:57,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122024041] [2025-03-17 13:59:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122024041] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:59:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834075931] [2025-03-17 13:59:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:57,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:59:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:57,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:59:57,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:59:57,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:57,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:57,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:57,286 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-03-17 13:59:57,286 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 13:59:57,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-03-17 13:59:57,290 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-17 13:59:57,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-17 13:59:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:59:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 13:59:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-17 13:59:57,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-17 13:59:57,300 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-17 13:59:57,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-17 13:59:57,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:57,304 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-17 13:59:57,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-03-17 13:59:57,308 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-17 13:59:57,308 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-17 13:59:57,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:57,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:57,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 13:59:57,309 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:57,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746953, now seen corresponding path program 1 times [2025-03-17 13:59:57,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:57,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322341544] [2025-03-17 13:59:57,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:57,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:57,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:59:57,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:59:57,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:57,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:57,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322341544] [2025-03-17 13:59:57,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322341544] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:57,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:57,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:59:57,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845934529] [2025-03-17 13:59:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:57,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:59:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:57,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:59:57,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:59:57,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:57,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:57,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:57,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:57,702 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2025-03-17 13:59:57,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:57,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2607 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2025-03-17 13:59:57,708 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-03-17 13:59:57,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-03-17 13:59:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:59:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 13:59:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-17 13:59:57,710 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-03-17 13:59:57,710 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-03-17 13:59:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-03-17 13:59:57,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 13:59:57,712 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-03-17 13:59:57,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-03-17 13:59:57,713 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-03-17 13:59:57,713 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-03-17 13:59:57,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:57,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:57,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 13:59:57,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:57,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:57,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1561247511, now seen corresponding path program 1 times [2025-03-17 13:59:57,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:57,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524431084] [2025-03-17 13:59:57,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:57,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:57,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:59:57,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:59:57,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:57,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524431084] [2025-03-17 13:59:57,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524431084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:57,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:57,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:59:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394070462] [2025-03-17 13:59:57,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:57,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:59:57,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:57,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:59:57,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:59:57,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:57,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:57,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:57,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:57,982 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2025-03-17 13:59:57,983 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2025-03-17 13:59:57,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1843 event pairs, 63 based on Foata normal form. 18/466 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2025-03-17 13:59:57,985 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2025-03-17 13:59:57,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 54 transitions, 294 flow [2025-03-17 13:59:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:59:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 13:59:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-03-17 13:59:57,987 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2025-03-17 13:59:57,987 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 6 states and 94 transitions. [2025-03-17 13:59:57,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 54 transitions, 294 flow [2025-03-17 13:59:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:57,989 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 144 flow [2025-03-17 13:59:57,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2025-03-17 13:59:57,990 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-03-17 13:59:57,990 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 144 flow [2025-03-17 13:59:57,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:57,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:57,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 13:59:57,991 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:57,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103228, now seen corresponding path program 1 times [2025-03-17 13:59:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610386663] [2025-03-17 13:59:57,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:57,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:59:57,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:59:57,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:57,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:58,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610386663] [2025-03-17 13:59:58,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610386663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:58,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:59:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331363627] [2025-03-17 13:59:58,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:58,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:59:58,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:58,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:59:58,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:59:58,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:58,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:58,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:58,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:58,294 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2025-03-17 13:59:58,294 INFO L125 PetriNetUnfolderBase]: For 1142/1142 co-relation queries the response was YES. [2025-03-17 13:59:58,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 725 events. 391/725 cut-off events. For 1142/1142 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3193 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2114. Up to 264 conditions per place. [2025-03-17 13:59:58,299 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-03-17 13:59:58,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 82 transitions, 518 flow [2025-03-17 13:59:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:59:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 13:59:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-17 13:59:58,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-17 13:59:58,301 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 144 flow. Second operand 9 states and 144 transitions. [2025-03-17 13:59:58,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 82 transitions, 518 flow [2025-03-17 13:59:58,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 82 transitions, 476 flow, removed 20 selfloop flow, removed 3 redundant places. [2025-03-17 13:59:58,305 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 240 flow [2025-03-17 13:59:58,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2025-03-17 13:59:58,306 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-17 13:59:58,306 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 240 flow [2025-03-17 13:59:58,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:58,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:58,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 13:59:58,307 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:58,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1201091516, now seen corresponding path program 2 times [2025-03-17 13:59:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901872373] [2025-03-17 13:59:58,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:58,314 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:59:58,317 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:59:58,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:58,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901872373] [2025-03-17 13:59:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901872373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:58,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:59:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131478284] [2025-03-17 13:59:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:58,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:59:58,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:58,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:59:58,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:59:58,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:58,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:58,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:58,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:58,586 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-03-17 13:59:58,586 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2025-03-17 13:59:58,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 611 events. 328/611 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2570 event pairs, 95 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 2027. Up to 234 conditions per place. [2025-03-17 13:59:58,590 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 11 changer transitions 28/81 dead transitions. [2025-03-17 13:59:58,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 612 flow [2025-03-17 13:59:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:59:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 13:59:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-03-17 13:59:58,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-03-17 13:59:58,593 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 240 flow. Second operand 8 states and 127 transitions. [2025-03-17 13:59:58,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 612 flow [2025-03-17 13:59:58,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 568 flow, removed 22 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:58,602 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 271 flow [2025-03-17 13:59:58,603 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=271, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2025-03-17 13:59:58,603 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2025-03-17 13:59:58,605 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 271 flow [2025-03-17 13:59:58,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:58,605 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:58,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 13:59:58,605 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:58,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash 661783278, now seen corresponding path program 1 times [2025-03-17 13:59:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:58,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014695988] [2025-03-17 13:59:58,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:58,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:59:58,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:59:58,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:58,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014695988] [2025-03-17 13:59:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014695988] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:58,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:58,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:59:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213812288] [2025-03-17 13:59:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:58,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:59:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:58,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:59:58,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:59:58,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:58,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 271 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:58,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:58,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:58,928 INFO L124 PetriNetUnfolderBase]: 364/670 cut-off events. [2025-03-17 13:59:58,929 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2025-03-17 13:59:58,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 670 events. 364/670 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2802 event pairs, 65 based on Foata normal form. 27/691 useless extension candidates. Maximal degree in co-relation 2397. Up to 148 conditions per place. [2025-03-17 13:59:58,935 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 18 changer transitions 28/90 dead transitions. [2025-03-17 13:59:58,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 715 flow [2025-03-17 13:59:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 13:59:58,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 13:59:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-03-17 13:59:58,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-17 13:59:58,937 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 271 flow. Second operand 10 states and 155 transitions. [2025-03-17 13:59:58,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 715 flow [2025-03-17 13:59:58,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 90 transitions, 646 flow, removed 25 selfloop flow, removed 7 redundant places. [2025-03-17 13:59:58,942 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 350 flow [2025-03-17 13:59:58,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=350, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2025-03-17 13:59:58,944 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2025-03-17 13:59:58,945 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 350 flow [2025-03-17 13:59:58,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:58,945 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:58,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 13:59:58,945 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:58,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash 116634644, now seen corresponding path program 2 times [2025-03-17 13:59:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488881414] [2025-03-17 13:59:58,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:58,953 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:59:58,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:59:58,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:58,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:59,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:59,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488881414] [2025-03-17 13:59:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488881414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:59,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:59,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:59:59,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190198207] [2025-03-17 13:59:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:59,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:59:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:59,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:59:59,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:59:59,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:59,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 350 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:59,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:59,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:59,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:59,252 INFO L124 PetriNetUnfolderBase]: 391/719 cut-off events. [2025-03-17 13:59:59,252 INFO L125 PetriNetUnfolderBase]: For 3901/3901 co-relation queries the response was YES. [2025-03-17 13:59:59,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 719 events. 391/719 cut-off events. For 3901/3901 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3108 event pairs, 104 based on Foata normal form. 18/733 useless extension candidates. Maximal degree in co-relation 2771. Up to 327 conditions per place. [2025-03-17 13:59:59,256 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 49 selfloop transitions, 16 changer transitions 25/94 dead transitions. [2025-03-17 13:59:59,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 800 flow [2025-03-17 13:59:59,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 13:59:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 13:59:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-17 13:59:59,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-17 13:59:59,271 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 350 flow. Second operand 11 states and 168 transitions. [2025-03-17 13:59:59,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 800 flow [2025-03-17 13:59:59,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 94 transitions, 720 flow, removed 32 selfloop flow, removed 6 redundant places. [2025-03-17 13:59:59,279 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 381 flow [2025-03-17 13:59:59,279 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=381, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2025-03-17 13:59:59,280 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-03-17 13:59:59,280 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 381 flow [2025-03-17 13:59:59,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:59,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:59,280 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:59,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 13:59:59,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:59,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1782115872, now seen corresponding path program 1 times [2025-03-17 13:59:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:59,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350316118] [2025-03-17 13:59:59,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:59,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:59,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:59:59,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:59,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:59,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:59,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350316118] [2025-03-17 13:59:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350316118] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:59,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360847311] [2025-03-17 13:59:59,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:59,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:59,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:59,368 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) [2025-03-17 13:59:59,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:59:59,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:59:59,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:59,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:59,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:59,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:59:59,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:59,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:59,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360847311] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:59,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-17 13:59:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853954592] [2025-03-17 13:59:59,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:59,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 13:59:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:59,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 13:59:59,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-03-17 13:59:59,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:59,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2025-03-17 13:59:59,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:59,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:59,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:00,013 INFO L124 PetriNetUnfolderBase]: 625/1129 cut-off events. [2025-03-17 14:00:00,014 INFO L125 PetriNetUnfolderBase]: For 7743/7743 co-relation queries the response was YES. [2025-03-17 14:00:00,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4595 conditions, 1129 events. 625/1129 cut-off events. For 7743/7743 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4774 event pairs, 59 based on Foata normal form. 45/1168 useless extension candidates. Maximal degree in co-relation 4564. Up to 182 conditions per place. [2025-03-17 14:00:00,020 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 65 selfloop transitions, 33 changer transitions 56/158 dead transitions. [2025-03-17 14:00:00,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 158 transitions, 1433 flow [2025-03-17 14:00:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 14:00:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 14:00:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 293 transitions. [2025-03-17 14:00:00,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5317604355716878 [2025-03-17 14:00:00,022 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 381 flow. Second operand 19 states and 293 transitions. [2025-03-17 14:00:00,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 158 transitions, 1433 flow [2025-03-17 14:00:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 158 transitions, 1356 flow, removed 28 selfloop flow, removed 7 redundant places. [2025-03-17 14:00:00,032 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 698 flow [2025-03-17 14:00:00,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=698, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2025-03-17 14:00:00,033 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2025-03-17 14:00:00,033 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 698 flow [2025-03-17 14:00:00,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2025-03-17 14:00:00,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:00,033 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:00,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 14:00:00,234 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 [2025-03-17 14:00:00,234 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:00,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:00,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2101291399, now seen corresponding path program 1 times [2025-03-17 14:00:00,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:00,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795076718] [2025-03-17 14:00:00,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:00,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:00,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:00:00,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:00,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:00,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795076718] [2025-03-17 14:00:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795076718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:00,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544801253] [2025-03-17 14:00:00,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:00,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:00,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:00,414 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) [2025-03-17 14:00:00,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:00:00,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-17 14:00:00,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:00,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:00,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:00,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 14:00:00,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:00,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544801253] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:00,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-17 14:00:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288349843] [2025-03-17 14:00:00,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:00,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 14:00:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:00,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 14:00:00,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-03-17 14:00:00,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:00,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 698 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:00,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:00,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:00,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:01,294 INFO L124 PetriNetUnfolderBase]: 823/1541 cut-off events. [2025-03-17 14:00:01,294 INFO L125 PetriNetUnfolderBase]: For 19489/19489 co-relation queries the response was YES. [2025-03-17 14:00:01,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 1541 events. 823/1541 cut-off events. For 19489/19489 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6707 event pairs, 203 based on Foata normal form. 81/1618 useless extension candidates. Maximal degree in co-relation 7224. Up to 720 conditions per place. [2025-03-17 14:00:01,308 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 92 selfloop transitions, 25 changer transitions 89/210 dead transitions. [2025-03-17 14:00:01,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 2368 flow [2025-03-17 14:00:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 14:00:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 14:00:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 376 transitions. [2025-03-17 14:00:01,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5186206896551724 [2025-03-17 14:00:01,329 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 698 flow. Second operand 25 states and 376 transitions. [2025-03-17 14:00:01,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 2368 flow [2025-03-17 14:00:01,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 210 transitions, 1865 flow, removed 237 selfloop flow, removed 10 redundant places. [2025-03-17 14:00:01,353 INFO L231 Difference]: Finished difference. Result has 115 places, 74 transitions, 785 flow [2025-03-17 14:00:01,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=785, PETRI_PLACES=115, PETRI_TRANSITIONS=74} [2025-03-17 14:00:01,354 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2025-03-17 14:00:01,355 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 74 transitions, 785 flow [2025-03-17 14:00:01,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:01,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:01,355 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:01,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:01,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-17 14:00:01,558 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:01,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2001688053, now seen corresponding path program 2 times [2025-03-17 14:00:01,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:01,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518256310] [2025-03-17 14:00:01,559 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:01,565 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 14:00:01,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:01,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:01,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518256310] [2025-03-17 14:00:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518256310] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46722537] [2025-03-17 14:00:01,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:01,680 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) [2025-03-17 14:00:01,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:00:01,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-03-17 14:00:01,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:01,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:01,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:01,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 14:00:01,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:01,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:01,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46722537] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:01,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-17 14:00:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884270368] [2025-03-17 14:00:01,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:01,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-17 14:00:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:01,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-17 14:00:01,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-03-17 14:00:01,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:01,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 74 transitions, 785 flow. Second operand has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:01,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:01,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:01,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:02,627 INFO L124 PetriNetUnfolderBase]: 1435/2726 cut-off events. [2025-03-17 14:00:02,627 INFO L125 PetriNetUnfolderBase]: For 66366/66366 co-relation queries the response was YES. [2025-03-17 14:00:02,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14602 conditions, 2726 events. 1435/2726 cut-off events. For 66366/66366 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14672 event pairs, 138 based on Foata normal form. 81/2803 useless extension candidates. Maximal degree in co-relation 14550. Up to 484 conditions per place. [2025-03-17 14:00:02,644 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 127 selfloop transitions, 80 changer transitions 91/302 dead transitions. [2025-03-17 14:00:02,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 302 transitions, 3861 flow [2025-03-17 14:00:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 14:00:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 14:00:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 489 transitions. [2025-03-17 14:00:02,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5269396551724138 [2025-03-17 14:00:02,646 INFO L175 Difference]: Start difference. First operand has 115 places, 74 transitions, 785 flow. Second operand 32 states and 489 transitions. [2025-03-17 14:00:02,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 302 transitions, 3861 flow [2025-03-17 14:00:02,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 302 transitions, 3247 flow, removed 299 selfloop flow, removed 13 redundant places. [2025-03-17 14:00:02,689 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 1594 flow [2025-03-17 14:00:02,689 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1594, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2025-03-17 14:00:02,690 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2025-03-17 14:00:02,690 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 1594 flow [2025-03-17 14:00:02,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.294117647058824) internal successors, (175), 17 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:02,690 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:02,690 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:02,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 14:00:02,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:02,891 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:02,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1775698249, now seen corresponding path program 3 times [2025-03-17 14:00:02,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:02,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340749515] [2025-03-17 14:00:02,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:02,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:02,896 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-03-17 14:00:02,906 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:02,906 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 14:00:02,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:03,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:03,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340749515] [2025-03-17 14:00:03,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340749515] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:03,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576374204] [2025-03-17 14:00:03,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:03,009 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) [2025-03-17 14:00:03,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:00:03,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 4 equivalence classes. [2025-03-17 14:00:03,049 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 28 of 28 statements. [2025-03-17 14:00:03,049 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 14:00:03,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:03,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 14:00:03,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:03,086 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576374204] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:03,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-17 14:00:03,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904541599] [2025-03-17 14:00:03,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:03,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 14:00:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:03,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 14:00:03,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2025-03-17 14:00:03,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:03,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 1594 flow. Second operand has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2025-03-17 14:00:03,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:03,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:03,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:04,250 INFO L124 PetriNetUnfolderBase]: 1822/3435 cut-off events. [2025-03-17 14:00:04,251 INFO L125 PetriNetUnfolderBase]: For 152114/152114 co-relation queries the response was YES. [2025-03-17 14:00:04,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21739 conditions, 3435 events. 1822/3435 cut-off events. For 152114/152114 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19323 event pairs, 58 based on Foata normal form. 117/3548 useless extension candidates. Maximal degree in co-relation 21672. Up to 509 conditions per place. [2025-03-17 14:00:04,281 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 124 selfloop transitions, 121 changer transitions 115/364 dead transitions. [2025-03-17 14:00:04,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 364 transitions, 5825 flow [2025-03-17 14:00:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-17 14:00:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-03-17 14:00:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 551 transitions. [2025-03-17 14:00:04,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-03-17 14:00:04,283 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 1594 flow. Second operand 36 states and 551 transitions. [2025-03-17 14:00:04,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 364 transitions, 5825 flow [2025-03-17 14:00:04,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 364 transitions, 4925 flow, removed 436 selfloop flow, removed 16 redundant places. [2025-03-17 14:00:04,523 INFO L231 Difference]: Finished difference. Result has 180 places, 155 transitions, 2414 flow [2025-03-17 14:00:04,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2414, PETRI_PLACES=180, PETRI_TRANSITIONS=155} [2025-03-17 14:00:04,524 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2025-03-17 14:00:04,524 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 155 transitions, 2414 flow [2025-03-17 14:00:04,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2025-03-17 14:00:04,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:04,524 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:04,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:04,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:04,744 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:04,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 774409551, now seen corresponding path program 4 times [2025-03-17 14:00:04,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:04,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926354732] [2025-03-17 14:00:04,744 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:04,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:04,752 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-17 14:00:04,756 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:00:04,757 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:04,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926354732] [2025-03-17 14:00:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926354732] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283898072] [2025-03-17 14:00:04,926 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:04,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:04,928 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) [2025-03-17 14:00:04,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:00:04,958 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-17 14:00:04,969 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:00:04,969 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:04,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:04,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 14:00:04,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:05,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283898072] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:05,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-17 14:00:05,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687305267] [2025-03-17 14:00:05,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:05,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-17 14:00:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:05,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-17 14:00:05,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2025-03-17 14:00:05,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:05,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 155 transitions, 2414 flow. Second operand has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:05,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:05,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:05,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:06,705 INFO L124 PetriNetUnfolderBase]: 2632/4901 cut-off events. [2025-03-17 14:00:06,706 INFO L125 PetriNetUnfolderBase]: For 333691/333691 co-relation queries the response was YES. [2025-03-17 14:00:06,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37125 conditions, 4901 events. 2632/4901 cut-off events. For 333691/333691 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 26522 event pairs, 89 based on Foata normal form. 99/4994 useless extension candidates. Maximal degree in co-relation 37044. Up to 780 conditions per place. [2025-03-17 14:00:06,749 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 164 selfloop transitions, 176 changer transitions 146/490 dead transitions. [2025-03-17 14:00:06,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 490 transitions, 9879 flow [2025-03-17 14:00:06,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-03-17 14:00:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-03-17 14:00:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 749 transitions. [2025-03-17 14:00:06,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270935960591133 [2025-03-17 14:00:06,753 INFO L175 Difference]: Start difference. First operand has 180 places, 155 transitions, 2414 flow. Second operand 49 states and 749 transitions. [2025-03-17 14:00:06,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 490 transitions, 9879 flow [2025-03-17 14:00:07,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 490 transitions, 8173 flow, removed 823 selfloop flow, removed 20 redundant places. [2025-03-17 14:00:07,119 INFO L231 Difference]: Finished difference. Result has 230 places, 216 transitions, 3912 flow [2025-03-17 14:00:07,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3912, PETRI_PLACES=230, PETRI_TRANSITIONS=216} [2025-03-17 14:00:07,119 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2025-03-17 14:00:07,120 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 216 transitions, 3912 flow [2025-03-17 14:00:07,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.038461538461538) internal successors, (261), 26 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:07,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:07,121 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:07,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 14:00:07,322 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,SelfDestructingSolverStorable11 [2025-03-17 14:00:07,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:07,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash 582731571, now seen corresponding path program 5 times [2025-03-17 14:00:07,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:07,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051105794] [2025-03-17 14:00:07,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:07,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:07,338 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 9 equivalence classes. [2025-03-17 14:00:07,354 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:07,354 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-17 14:00:07,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051105794] [2025-03-17 14:00:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051105794] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628412517] [2025-03-17 14:00:07,750 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:07,752 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) [2025-03-17 14:00:07,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:00:07,782 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 9 equivalence classes. [2025-03-17 14:00:07,797 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:07,797 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-03-17 14:00:07,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:07,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:00:07,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:07,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628412517] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:08,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-03-17 14:00:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525174722] [2025-03-17 14:00:08,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:08,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 14:00:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:08,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 14:00:08,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 14:00:08,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:08,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 216 transitions, 3912 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2025-03-17 14:00:08,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:08,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:08,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:09,528 INFO L124 PetriNetUnfolderBase]: 2704/5168 cut-off events. [2025-03-17 14:00:09,528 INFO L125 PetriNetUnfolderBase]: For 521278/521278 co-relation queries the response was YES. [2025-03-17 14:00:09,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42822 conditions, 5168 events. 2704/5168 cut-off events. For 521278/521278 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29183 event pairs, 1013 based on Foata normal form. 63/5227 useless extension candidates. Maximal degree in co-relation 42719. Up to 3618 conditions per place. [2025-03-17 14:00:09,568 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 261 selfloop transitions, 45 changer transitions 95/405 dead transitions. [2025-03-17 14:00:09,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 405 transitions, 9268 flow [2025-03-17 14:00:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-17 14:00:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-17 14:00:09,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 484 transitions. [2025-03-17 14:00:09,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-17 14:00:09,570 INFO L175 Difference]: Start difference. First operand has 230 places, 216 transitions, 3912 flow. Second operand 33 states and 484 transitions. [2025-03-17 14:00:09,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 405 transitions, 9268 flow [2025-03-17 14:00:10,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 405 transitions, 6769 flow, removed 1228 selfloop flow, removed 17 redundant places. [2025-03-17 14:00:10,387 INFO L231 Difference]: Finished difference. Result has 249 places, 232 transitions, 3422 flow [2025-03-17 14:00:10,387 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3422, PETRI_PLACES=249, PETRI_TRANSITIONS=232} [2025-03-17 14:00:10,388 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2025-03-17 14:00:10,388 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 232 transitions, 3422 flow [2025-03-17 14:00:10,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2025-03-17 14:00:10,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:10,388 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:10,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 14:00:10,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:10,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:10,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1100247189, now seen corresponding path program 6 times [2025-03-17 14:00:10,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:10,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815012453] [2025-03-17 14:00:10,590 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:00:10,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:10,599 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 64 statements into 7 equivalence classes. [2025-03-17 14:00:10,609 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:10,609 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-17 14:00:10,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815012453] [2025-03-17 14:00:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815012453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298196242] [2025-03-17 14:00:10,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:00:10,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:10,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:10,915 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) [2025-03-17 14:00:10,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 14:00:10,946 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 64 statements into 7 equivalence classes. [2025-03-17 14:00:10,966 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:10,966 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-03-17 14:00:10,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:10,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:00:10,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:11,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298196242] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:11,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-03-17 14:00:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722381759] [2025-03-17 14:00:11,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:11,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 14:00:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:11,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 14:00:11,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 14:00:11,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:11,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 232 transitions, 3422 flow. Second operand has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2025-03-17 14:00:11,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:11,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:11,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:13,399 INFO L124 PetriNetUnfolderBase]: 3208/6321 cut-off events. [2025-03-17 14:00:13,399 INFO L125 PetriNetUnfolderBase]: For 504237/504237 co-relation queries the response was YES. [2025-03-17 14:00:13,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46499 conditions, 6321 events. 3208/6321 cut-off events. For 504237/504237 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 38008 event pairs, 596 based on Foata normal form. 63/6380 useless extension candidates. Maximal degree in co-relation 46391. Up to 2398 conditions per place. [2025-03-17 14:00:13,444 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 265 selfloop transitions, 165 changer transitions 135/569 dead transitions. [2025-03-17 14:00:13,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 569 transitions, 10301 flow [2025-03-17 14:00:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-03-17 14:00:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-03-17 14:00:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 773 transitions. [2025-03-17 14:00:13,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5029277813923227 [2025-03-17 14:00:13,449 INFO L175 Difference]: Start difference. First operand has 249 places, 232 transitions, 3422 flow. Second operand 53 states and 773 transitions. [2025-03-17 14:00:13,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 569 transitions, 10301 flow [2025-03-17 14:00:14,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 569 transitions, 9542 flow, removed 354 selfloop flow, removed 21 redundant places. [2025-03-17 14:00:14,022 INFO L231 Difference]: Finished difference. Result has 292 places, 288 transitions, 4594 flow [2025-03-17 14:00:14,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4594, PETRI_PLACES=292, PETRI_TRANSITIONS=288} [2025-03-17 14:00:14,023 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2025-03-17 14:00:14,023 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 288 transitions, 4594 flow [2025-03-17 14:00:14,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.121951219512194) internal successors, (415), 41 states have internal predecessors, (415), 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) [2025-03-17 14:00:14,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:14,024 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:14,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:14,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:14,225 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:14,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash -813741755, now seen corresponding path program 7 times [2025-03-17 14:00:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685202301] [2025-03-17 14:00:14,226 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:00:14,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:14,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 14:00:14,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:14,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:14,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:14,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685202301] [2025-03-17 14:00:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685202301] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581645056] [2025-03-17 14:00:14,504 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:00:14,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:14,506 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 14:00:14,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 14:00:14,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:14,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:14,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:14,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:00:14,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:14,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581645056] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:15,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2025-03-17 14:00:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665143503] [2025-03-17 14:00:15,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:15,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 14:00:15,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:15,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 14:00:15,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 14:00:15,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:15,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 288 transitions, 4594 flow. Second operand has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 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) [2025-03-17 14:00:15,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:15,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:15,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:17,684 INFO L124 PetriNetUnfolderBase]: 4099/8338 cut-off events. [2025-03-17 14:00:17,684 INFO L125 PetriNetUnfolderBase]: For 858935/858935 co-relation queries the response was YES. [2025-03-17 14:00:17,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68156 conditions, 8338 events. 4099/8338 cut-off events. For 858935/858935 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 54678 event pairs, 288 based on Foata normal form. 81/8415 useless extension candidates. Maximal degree in co-relation 68035. Up to 1731 conditions per place. [2025-03-17 14:00:17,762 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 239 selfloop transitions, 309 changer transitions 157/709 dead transitions. [2025-03-17 14:00:17,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 709 transitions, 14418 flow [2025-03-17 14:00:17,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-17 14:00:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-03-17 14:00:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 871 transitions. [2025-03-17 14:00:17,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5090590298071304 [2025-03-17 14:00:17,764 INFO L175 Difference]: Start difference. First operand has 292 places, 288 transitions, 4594 flow. Second operand 59 states and 871 transitions. [2025-03-17 14:00:17,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 709 transitions, 14418 flow [2025-03-17 14:00:19,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 709 transitions, 12941 flow, removed 640 selfloop flow, removed 29 redundant places. [2025-03-17 14:00:19,258 INFO L231 Difference]: Finished difference. Result has 337 places, 385 transitions, 6807 flow [2025-03-17 14:00:19,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=6807, PETRI_PLACES=337, PETRI_TRANSITIONS=385} [2025-03-17 14:00:19,258 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2025-03-17 14:00:19,258 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 385 transitions, 6807 flow [2025-03-17 14:00:19,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.142857142857142) internal successors, (426), 42 states have internal predecessors, (426), 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) [2025-03-17 14:00:19,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:19,259 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:19,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:19,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 14:00:19,459 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:19,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash 842253335, now seen corresponding path program 8 times [2025-03-17 14:00:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178501641] [2025-03-17 14:00:19,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:19,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-17 14:00:19,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:19,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:19,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:19,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:19,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178501641] [2025-03-17 14:00:19,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178501641] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:19,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220087423] [2025-03-17 14:00:19,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:00:19,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:19,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:19,693 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:19,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 14:00:19,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-03-17 14:00:19,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:19,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:00:19,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:19,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:00:19,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:19,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:20,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220087423] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:20,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:20,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 40 [2025-03-17 14:00:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613729990] [2025-03-17 14:00:20,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:20,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-03-17 14:00:20,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:20,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-03-17 14:00:20,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1383, Unknown=0, NotChecked=0, Total=1640 [2025-03-17 14:00:20,132 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:20,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 385 transitions, 6807 flow. Second operand has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2025-03-17 14:00:20,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:20,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:20,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:23,125 INFO L124 PetriNetUnfolderBase]: 5143/10450 cut-off events. [2025-03-17 14:00:23,125 INFO L125 PetriNetUnfolderBase]: For 1483460/1483460 co-relation queries the response was YES. [2025-03-17 14:00:23,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95113 conditions, 10450 events. 5143/10450 cut-off events. For 1483460/1483460 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 72343 event pairs, 150 based on Foata normal form. 81/10527 useless extension candidates. Maximal degree in co-relation 94975. Up to 2283 conditions per place. [2025-03-17 14:00:23,215 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 222 selfloop transitions, 422 changer transitions 157/805 dead transitions. [2025-03-17 14:00:23,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 805 transitions, 17658 flow [2025-03-17 14:00:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-17 14:00:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-03-17 14:00:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 881 transitions. [2025-03-17 14:00:23,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5149035651665692 [2025-03-17 14:00:23,217 INFO L175 Difference]: Start difference. First operand has 337 places, 385 transitions, 6807 flow. Second operand 59 states and 881 transitions. [2025-03-17 14:00:23,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 805 transitions, 17658 flow [2025-03-17 14:00:25,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 805 transitions, 15017 flow, removed 1172 selfloop flow, removed 31 redundant places. [2025-03-17 14:00:25,863 INFO L231 Difference]: Finished difference. Result has 381 places, 481 transitions, 8705 flow [2025-03-17 14:00:25,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5370, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=8705, PETRI_PLACES=381, PETRI_TRANSITIONS=481} [2025-03-17 14:00:25,864 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2025-03-17 14:00:25,864 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 481 transitions, 8705 flow [2025-03-17 14:00:25,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.146341463414634) internal successors, (416), 41 states have internal predecessors, (416), 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) [2025-03-17 14:00:25,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:25,864 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:25,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:26,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-17 14:00:26,065 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:26,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1865836447, now seen corresponding path program 9 times [2025-03-17 14:00:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:26,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773638952] [2025-03-17 14:00:26,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:26,071 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 7 equivalence classes. [2025-03-17 14:00:26,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:26,084 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-17 14:00:26,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:26,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773638952] [2025-03-17 14:00:26,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773638952] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:26,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732600365] [2025-03-17 14:00:26,355 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:00:26,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:26,357 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:26,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 14:00:26,395 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 7 equivalence classes. [2025-03-17 14:00:26,417 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 14:00:26,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-03-17 14:00:26,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:26,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-17 14:00:26,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 1 proven. 181 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:26,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:26,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732600365] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:26,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2025-03-17 14:00:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786183966] [2025-03-17 14:00:26,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:26,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-03-17 14:00:26,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:26,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-03-17 14:00:26,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1407, Unknown=0, NotChecked=0, Total=1722 [2025-03-17 14:00:26,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:26,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 481 transitions, 8705 flow. Second operand has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 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) [2025-03-17 14:00:26,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:26,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:30,386 INFO L124 PetriNetUnfolderBase]: 5917/11886 cut-off events. [2025-03-17 14:00:30,386 INFO L125 PetriNetUnfolderBase]: For 1948012/1948012 co-relation queries the response was YES. [2025-03-17 14:00:30,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114536 conditions, 11886 events. 5917/11886 cut-off events. For 1948012/1948012 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 83767 event pairs, 66 based on Foata normal form. 90/11972 useless extension candidates. Maximal degree in co-relation 114380. Up to 2604 conditions per place. [2025-03-17 14:00:30,547 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 215 selfloop transitions, 495 changer transitions 162/876 dead transitions. [2025-03-17 14:00:30,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 876 transitions, 20168 flow [2025-03-17 14:00:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-03-17 14:00:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2025-03-17 14:00:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 907 transitions. [2025-03-17 14:00:30,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.521264367816092 [2025-03-17 14:00:30,550 INFO L175 Difference]: Start difference. First operand has 381 places, 481 transitions, 8705 flow. Second operand 60 states and 907 transitions. [2025-03-17 14:00:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 876 transitions, 20168 flow [2025-03-17 14:00:34,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 876 transitions, 17634 flow, removed 1081 selfloop flow, removed 34 redundant places. [2025-03-17 14:00:34,936 INFO L231 Difference]: Finished difference. Result has 421 places, 541 transitions, 10314 flow [2025-03-17 14:00:34,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7085, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10314, PETRI_PLACES=421, PETRI_TRANSITIONS=541} [2025-03-17 14:00:34,937 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2025-03-17 14:00:34,937 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 541 transitions, 10314 flow [2025-03-17 14:00:34,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 10.166666666666666) internal successors, (427), 42 states have internal predecessors, (427), 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) [2025-03-17 14:00:34,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:34,938 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:34,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 14:00:35,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 14:00:35,138 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:35,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:35,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1976084629, now seen corresponding path program 10 times [2025-03-17 14:00:35,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:35,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013137876] [2025-03-17 14:00:35,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:35,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-03-17 14:00:35,151 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 14:00:35,151 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:35,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:35,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013137876] [2025-03-17 14:00:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013137876] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111372964] [2025-03-17 14:00:35,485 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:00:35,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:35,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:35,487 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:35,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 14:00:35,520 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-03-17 14:00:35,534 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 14:00:35,534 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:00:35,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:35,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-17 14:00:35,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:35,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:00:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111372964] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:35,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 42 [2025-03-17 14:00:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779924959] [2025-03-17 14:00:35,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:35,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-17 14:00:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:35,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-17 14:00:35,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2025-03-17 14:00:35,848 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:35,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 541 transitions, 10314 flow. Second operand has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 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) [2025-03-17 14:00:35,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:35,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:35,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:39,281 INFO L124 PetriNetUnfolderBase]: 6052/12227 cut-off events. [2025-03-17 14:00:39,281 INFO L125 PetriNetUnfolderBase]: For 2468655/2468655 co-relation queries the response was YES. [2025-03-17 14:00:39,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125007 conditions, 12227 events. 6052/12227 cut-off events. For 2468655/2468655 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86811 event pairs, 203 based on Foata normal form. 27/12248 useless extension candidates. Maximal degree in co-relation 124836. Up to 2658 conditions per place. [2025-03-17 14:00:39,466 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 226 selfloop transitions, 479 changer transitions 87/796 dead transitions. [2025-03-17 14:00:39,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 796 transitions, 18535 flow [2025-03-17 14:00:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-17 14:00:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2025-03-17 14:00:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 653 transitions. [2025-03-17 14:00:39,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5236567762630313 [2025-03-17 14:00:39,467 INFO L175 Difference]: Start difference. First operand has 421 places, 541 transitions, 10314 flow. Second operand 43 states and 653 transitions. [2025-03-17 14:00:39,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 796 transitions, 18535 flow [2025-03-17 14:00:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 796 transitions, 15092 flow, removed 1418 selfloop flow, removed 42 redundant places. [2025-03-17 14:00:45,498 INFO L231 Difference]: Finished difference. Result has 418 places, 559 transitions, 10087 flow [2025-03-17 14:00:45,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8289, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=10087, PETRI_PLACES=418, PETRI_TRANSITIONS=559} [2025-03-17 14:00:45,499 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2025-03-17 14:00:45,499 INFO L471 AbstractCegarLoop]: Abstraction has has 418 places, 559 transitions, 10087 flow [2025-03-17 14:00:45,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.116279069767442) internal successors, (435), 43 states have internal predecessors, (435), 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) [2025-03-17 14:00:45,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:45,499 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:45,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 14:00:45,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-17 14:00:45,699 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:45,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:45,700 INFO L85 PathProgramCache]: Analyzing trace with hash 985977773, now seen corresponding path program 11 times [2025-03-17 14:00:45,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:45,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237916349] [2025-03-17 14:00:45,700 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:45,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:45,704 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 7 equivalence classes. [2025-03-17 14:00:45,710 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 14:00:45,712 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-17 14:00:45,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:45,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237916349] [2025-03-17 14:00:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237916349] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:00:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148726283] [2025-03-17 14:00:45,910 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:45,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:45,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:45,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:00:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 14:00:45,999 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 67 statements into 7 equivalence classes. [2025-03-17 14:00:46,012 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 14:00:46,012 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-03-17 14:00:46,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:46,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-17 14:00:46,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:46,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:00:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:00:46,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148726283] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:00:46,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:00:46,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2025-03-17 14:00:46,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710602061] [2025-03-17 14:00:46,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:00:46,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-17 14:00:46,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:46,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-17 14:00:46,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2025-03-17 14:00:46,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:46,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 559 transitions, 10087 flow. Second operand has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 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) [2025-03-17 14:00:46,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:46,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:49,629 INFO L124 PetriNetUnfolderBase]: 6025/12186 cut-off events. [2025-03-17 14:00:49,629 INFO L125 PetriNetUnfolderBase]: For 1926101/1926101 co-relation queries the response was YES. [2025-03-17 14:00:49,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112698 conditions, 12186 events. 6025/12186 cut-off events. For 1926101/1926101 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86351 event pairs, 152 based on Foata normal form. 45/12227 useless extension candidates. Maximal degree in co-relation 112529. Up to 2610 conditions per place. [2025-03-17 14:00:49,746 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 212 selfloop transitions, 492 changer transitions 101/809 dead transitions. [2025-03-17 14:00:49,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 809 transitions, 17024 flow [2025-03-17 14:00:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-17 14:00:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-17 14:00:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 681 transitions. [2025-03-17 14:00:49,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2025-03-17 14:00:49,747 INFO L175 Difference]: Start difference. First operand has 418 places, 559 transitions, 10087 flow. Second operand 45 states and 681 transitions. [2025-03-17 14:00:49,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 809 transitions, 17024 flow [2025-03-17 14:00:54,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 809 transitions, 15411 flow, removed 651 selfloop flow, removed 24 redundant places. [2025-03-17 14:00:54,213 INFO L231 Difference]: Finished difference. Result has 441 places, 562 transitions, 10582 flow [2025-03-17 14:00:54,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=9258, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=489, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10582, PETRI_PLACES=441, PETRI_TRANSITIONS=562} [2025-03-17 14:00:54,214 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2025-03-17 14:00:54,214 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 562 transitions, 10582 flow [2025-03-17 14:00:54,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 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) [2025-03-17 14:00:54,214 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:54,214 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:54,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-17 14:00:54,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:54,415 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:54,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1885817137, now seen corresponding path program 12 times [2025-03-17 14:00:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:54,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198402585] [2025-03-17 14:00:54,416 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:00:54,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:54,422 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 70 statements into 8 equivalence classes. [2025-03-17 14:00:54,427 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 70 of 70 statements. [2025-03-17 14:00:54,427 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-03-17 14:00:54,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:00:54,428 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 14:00:54,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-17 14:00:54,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-17 14:00:54,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:54,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 14:00:54,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 14:00:54,455 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 14:00:54,456 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-17 14:00:54,457 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-17 14:00:54,457 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-17 14:00:54,458 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-17 14:00:54,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 14:00:54,459 INFO L422 BasicCegarLoop]: Path program histogram: [12, 2, 2, 1, 1, 1, 1] [2025-03-17 14:00:54,535 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:00:54,535 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:00:54,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:00:54 BasicIcfg [2025-03-17 14:00:54,542 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:00:54,543 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:00:54,543 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:00:54,543 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:00:54,544 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:56" (3/4) ... [2025-03-17 14:00:54,545 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 14:00:54,546 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:00:54,546 INFO L158 Benchmark]: Toolchain (without parser) took 58415.25ms. Allocated memory was 167.8MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 132.3MB in the beginning and 1.0GB in the end (delta: -907.6MB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2025-03-17 14:00:54,546 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:00:54,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.34ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 113.2MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:00:54,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 111.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:00:54,547 INFO L158 Benchmark]: Boogie Preprocessor took 31.72ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:00:54,548 INFO L158 Benchmark]: IcfgBuilder took 291.46ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 91.5MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:00:54,548 INFO L158 Benchmark]: TraceAbstraction took 57700.36ms. Allocated memory was 167.8MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 90.7MB in the beginning and 1.0GB in the end (delta: -949.5MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2025-03-17 14:00:54,548 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 2.8GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 290.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:00:54,549 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.34ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 113.2MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 111.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.72ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 291.46ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 91.5MB in the end (delta: 18.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 57700.36ms. Allocated memory was 167.8MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 90.7MB in the beginning and 1.0GB in the end (delta: -949.5MB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 2.8GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 290.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, argc=49, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=6] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=8] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=9] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L704] COND TRUE 2 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, i=23, id1=-2, id2=-1, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L719] 0 int condJ = j >= (2*10 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, arg={0:0}, arg={0:0}, argc=49, condI=0, condJ=1, i=25, id1=-2, id2=-1, j=26, k=9, k=9] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 41 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 57.5s, OverallIterations: 20, TraceHistogramMax: 10, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 46.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7766 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7764 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8113 IncrementalHoareTripleChecker+Invalid, 8521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 1 mSDtfsCounter, 8113 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1865 GetRequests, 1004 SyntacticMatches, 0 SemanticMatches, 861 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18072 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10582occurred in iteration=19, InterpolantAutomatonStates: 568, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 1349 NumberOfCodeBlocks, 1349 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 1830 ConstructedInterpolants, 0 QuantifiedInterpolants, 8043 SizeOfPredicates, 160 NumberOfNonLiveVariables, 1702 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 43 InterpolantComputations, 7 PerfectInterpolantSequences, 56/3483 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 14:00:54,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-longer-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:00:56,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:00:56,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-17 14:00:56,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:00:56,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:00:56,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:00:56,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:00:56,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:00:56,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:00:56,681 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:00:56,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:00:56,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:00:56,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:00:56,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:00:56,683 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:00:56,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:00:56,683 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:00:56,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:00:56,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:00:56,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:00:56,685 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:00:56,685 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:00:56,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:00:56,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:00:56,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:00:56,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:56,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:00:56,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:00:56,686 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 -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2025-03-17 14:00:56,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:00:56,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:00:56,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:00:56,931 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:00:56,931 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:00:56,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-17 14:00:58,101 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004d56aa4/df149405599c4474ae329195c7f5fd6f/FLAGad3abad1a [2025-03-17 14:00:58,323 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:00:58,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-2.i [2025-03-17 14:00:58,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004d56aa4/df149405599c4474ae329195c7f5fd6f/FLAGad3abad1a [2025-03-17 14:00:58,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004d56aa4/df149405599c4474ae329195c7f5fd6f [2025-03-17 14:00:58,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:00:58,684 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:00:58,685 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:58,685 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:00:58,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:00:58,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:58,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b09bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58, skipping insertion in model container [2025-03-17 14:00:58,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:58,717 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:00:58,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:58,904 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:00:58,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:00:58,966 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:00:58,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58 WrapperNode [2025-03-17 14:00:58,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:00:58,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:58,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:00:58,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:00:58,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:58,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,001 INFO L138 Inliner]: procedures = 169, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2025-03-17 14:00:59,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:00:59,003 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:00:59,003 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:00:59,004 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:00:59,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,022 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]. [2025-03-17 14:00:59,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,026 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:00:59,037 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:00:59,037 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:00:59,037 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:00:59,038 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (1/1) ... [2025-03-17 14:00:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:00:59,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:59,062 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) [2025-03-17 14:00:59,064 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 [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 14:00:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 14:00:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:00:59,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:00:59,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:00:59,081 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:00:59,172 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:00:59,173 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:00:59,273 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:00:59,273 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:00:59,360 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:00:59,361 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:00:59,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:59 BoogieIcfgContainer [2025-03-17 14:00:59,361 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:00:59,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:00:59,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:00:59,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:00:59,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:00:58" (1/3) ... [2025-03-17 14:00:59,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a50f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:59, skipping insertion in model container [2025-03-17 14:00:59,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:00:58" (2/3) ... [2025-03-17 14:00:59,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a50f60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:00:59, skipping insertion in model container [2025-03-17 14:00:59,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:00:59" (3/3) ... [2025-03-17 14:00:59,368 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2025-03-17 14:00:59,377 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:00:59,379 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longer-2.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 14:00:59,379 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:00:59,418 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 14:00:59,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 14:00:59,467 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-17 14:00:59,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:59,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-17 14:00:59,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 14:00:59,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-17 14:00:59,477 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:00:59,484 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;@3966a059, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:00:59,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 14:00:59,490 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:00:59,490 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-17 14:00:59,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:00:59,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:59,491 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:59,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:59,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:59,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361786, now seen corresponding path program 1 times [2025-03-17 14:00:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:00:59,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958528963] [2025-03-17 14:00:59,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:59,504 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) [2025-03-17 14:00:59,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 14:00:59,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:00:59,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:00:59,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:00:59,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:59,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-17 14:00:59,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:00:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:00:59,611 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:00:59,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:00:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958528963] [2025-03-17 14:00:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958528963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:59,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 14:00:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149595202] [2025-03-17 14:00:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:59,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:00:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:00:59,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:00:59,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:00:59,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:59,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:59,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:59,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:59,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:59,750 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-03-17 14:00:59,751 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:00:59,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-03-17 14:00:59,754 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-17 14:00:59,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-17 14:00:59,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:00:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:00:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-17 14:00:59,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-17 14:00:59,763 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-17 14:00:59,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-17 14:00:59,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:00:59,766 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-17 14:00:59,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-03-17 14:00:59,770 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-17 14:00:59,770 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-17 14:00:59,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:59,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:00:59,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:00:59,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 14:00:59,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:59,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:59,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1792361335, now seen corresponding path program 1 times [2025-03-17 14:00:59,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:00:59,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129052856] [2025-03-17 14:00:59,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:00:59,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:00:59,981 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) [2025-03-17 14:00:59,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 14:01:00,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 14:01:00,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 14:01:00,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:00,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:00,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:01:00,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:00,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:00,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:00,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129052856] [2025-03-17 14:01:00,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129052856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:00,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:00,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:01:00,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227180419] [2025-03-17 14:01:00,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:00,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 14:01:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:00,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 14:01:00,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 14:01:00,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:00,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:00,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:00,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:00,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:00,343 INFO L124 PetriNetUnfolderBase]: 328/593 cut-off events. [2025-03-17 14:01:00,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 14:01:00,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 593 events. 328/593 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2607 event pairs, 45 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1120. Up to 243 conditions per place. [2025-03-17 14:01:00,347 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 7 changer transitions 29/69 dead transitions. [2025-03-17 14:01:00,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 69 transitions, 274 flow [2025-03-17 14:01:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:01:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:01:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-03-17 14:01:00,351 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5646551724137931 [2025-03-17 14:01:00,351 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 8 states and 131 transitions. [2025-03-17 14:01:00,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 69 transitions, 274 flow [2025-03-17 14:01:00,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 69 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:01:00,353 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 100 flow [2025-03-17 14:01:00,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=100, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2025-03-17 14:01:00,354 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-03-17 14:01:00,354 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 100 flow [2025-03-17 14:01:00,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:00,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:00,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:00,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 14:01:00,554 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 [2025-03-17 14:01:00,555 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:00,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash 123035499, now seen corresponding path program 1 times [2025-03-17 14:01:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:00,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736576883] [2025-03-17 14:01:00,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:00,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:00,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:00,558 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) [2025-03-17 14:01:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 14:01:00,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:01:00,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:01:00,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:00,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:00,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:01:00,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:00,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:00,666 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:00,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736576883] [2025-03-17 14:01:00,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736576883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:00,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:00,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:01:00,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450000635] [2025-03-17 14:01:00,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:00,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:01:00,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:00,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:01:00,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:01:00,669 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:00,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:00,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:00,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:00,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:00,814 INFO L124 PetriNetUnfolderBase]: 247/454 cut-off events. [2025-03-17 14:01:00,814 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2025-03-17 14:01:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 454 events. 247/454 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1820 event pairs, 50 based on Foata normal form. 18/468 useless extension candidates. Maximal degree in co-relation 1170. Up to 190 conditions per place. [2025-03-17 14:01:00,817 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 9 changer transitions 16/59 dead transitions. [2025-03-17 14:01:00,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 316 flow [2025-03-17 14:01:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 14:01:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 14:01:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2025-03-17 14:01:00,818 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2025-03-17 14:01:00,818 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 100 flow. Second operand 7 states and 110 transitions. [2025-03-17 14:01:00,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 316 flow [2025-03-17 14:01:00,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 312 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-17 14:01:00,821 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 143 flow [2025-03-17 14:01:00,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2025-03-17 14:01:00,821 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2025-03-17 14:01:00,821 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 143 flow [2025-03-17 14:01:00,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:00,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:00,822 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:00,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 14:01:01,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:01,022 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:01,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1292581058, now seen corresponding path program 1 times [2025-03-17 14:01:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:01,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107701039] [2025-03-17 14:01:01,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:01,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:01,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:01,025 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) [2025-03-17 14:01:01,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 14:01:01,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:01:01,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:01:01,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:01,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:01,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:01:01,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:01,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:01,120 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:01,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107701039] [2025-03-17 14:01:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107701039] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:01,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:01,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:01:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005886709] [2025-03-17 14:01:01,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:01,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:01:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:01,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:01:01,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:01:01,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:01,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:01,357 INFO L124 PetriNetUnfolderBase]: 391/725 cut-off events. [2025-03-17 14:01:01,357 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2025-03-17 14:01:01,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 725 events. 391/725 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3203 event pairs, 95 based on Foata normal form. 27/748 useless extension candidates. Maximal degree in co-relation 2098. Up to 264 conditions per place. [2025-03-17 14:01:01,362 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 47 selfloop transitions, 11 changer transitions 20/82 dead transitions. [2025-03-17 14:01:01,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 82 transitions, 517 flow [2025-03-17 14:01:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:01:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:01:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-17 14:01:01,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-17 14:01:01,365 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 143 flow. Second operand 9 states and 144 transitions. [2025-03-17 14:01:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 82 transitions, 517 flow [2025-03-17 14:01:01,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 478 flow, removed 17 selfloop flow, removed 3 redundant places. [2025-03-17 14:01:01,371 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 236 flow [2025-03-17 14:01:01,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2025-03-17 14:01:01,372 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2025-03-17 14:01:01,372 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 236 flow [2025-03-17 14:01:01,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:01,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:01,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:01,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 14:01:01,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:01,576 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:01,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:01,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1409592770, now seen corresponding path program 2 times [2025-03-17 14:01:01,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:01,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119699944] [2025-03-17 14:01:01,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:01,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:01,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:01,579 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) [2025-03-17 14:01:01,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 14:01:01,615 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-17 14:01:01,621 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 14:01:01,621 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:01:01,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:01,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 14:01:01,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:01,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:01,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:01,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119699944] [2025-03-17 14:01:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119699944] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:01,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 14:01:01,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708993825] [2025-03-17 14:01:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:01,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 14:01:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:01,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 14:01:01,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 14:01:01,678 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:01,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:01,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:01,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:01,868 INFO L124 PetriNetUnfolderBase]: 346/655 cut-off events. [2025-03-17 14:01:01,868 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2025-03-17 14:01:01,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 655 events. 346/655 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2875 event pairs, 88 based on Foata normal form. 45/696 useless extension candidates. Maximal degree in co-relation 2166. Up to 273 conditions per place. [2025-03-17 14:01:01,871 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 40 selfloop transitions, 12 changer transitions 30/86 dead transitions. [2025-03-17 14:01:01,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 655 flow [2025-03-17 14:01:01,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:01:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:01:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-17 14:01:01,873 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-03-17 14:01:01,873 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 236 flow. Second operand 9 states and 140 transitions. [2025-03-17 14:01:01,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 655 flow [2025-03-17 14:01:01,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 595 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-03-17 14:01:01,880 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 278 flow [2025-03-17 14:01:01,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2025-03-17 14:01:01,881 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2025-03-17 14:01:01,881 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 278 flow [2025-03-17 14:01:01,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:01,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:01,881 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:01,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 14:01:02,085 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 [2025-03-17 14:01:02,085 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:02,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1069631228, now seen corresponding path program 1 times [2025-03-17 14:01:02,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:02,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72097873] [2025-03-17 14:01:02,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:02,088 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) [2025-03-17 14:01:02,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 14:01:02,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:01:02,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:01:02,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:02,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:02,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:01:02,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:02,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:02,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72097873] [2025-03-17 14:01:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72097873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:02,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:01:02,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130558657] [2025-03-17 14:01:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:02,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:01:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:02,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:01:02,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:01:02,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:02,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:02,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:02,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:02,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:02,414 INFO L124 PetriNetUnfolderBase]: 427/806 cut-off events. [2025-03-17 14:01:02,414 INFO L125 PetriNetUnfolderBase]: For 3492/3492 co-relation queries the response was YES. [2025-03-17 14:01:02,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 806 events. 427/806 cut-off events. For 3492/3492 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3713 event pairs, 122 based on Foata normal form. 27/829 useless extension candidates. Maximal degree in co-relation 2874. Up to 316 conditions per place. [2025-03-17 14:01:02,419 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 51 selfloop transitions, 12 changer transitions 26/93 dead transitions. [2025-03-17 14:01:02,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 752 flow [2025-03-17 14:01:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:01:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 14:01:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2025-03-17 14:01:02,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2025-03-17 14:01:02,420 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 278 flow. Second operand 10 states and 158 transitions. [2025-03-17 14:01:02,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 752 flow [2025-03-17 14:01:02,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 718 flow, removed 11 selfloop flow, removed 4 redundant places. [2025-03-17 14:01:02,426 INFO L231 Difference]: Finished difference. Result has 68 places, 43 transitions, 345 flow [2025-03-17 14:01:02,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=43} [2025-03-17 14:01:02,428 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2025-03-17 14:01:02,429 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 43 transitions, 345 flow [2025-03-17 14:01:02,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:02,429 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:02,429 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:02,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 14:01:02,629 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 [2025-03-17 14:01:02,630 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1761094232, now seen corresponding path program 2 times [2025-03-17 14:01:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051335282] [2025-03-17 14:01:02,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:02,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:02,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:02,633 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) [2025-03-17 14:01:02,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 14:01:02,667 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:01:02,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:01:02,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:01:02,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:02,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:01:02,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:02,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:02,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051335282] [2025-03-17 14:01:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051335282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:01:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610206675] [2025-03-17 14:01:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:02,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:01:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:01:02,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:01:02,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:02,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 43 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:02,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:02,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:02,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:03,002 INFO L124 PetriNetUnfolderBase]: 463/891 cut-off events. [2025-03-17 14:01:03,002 INFO L125 PetriNetUnfolderBase]: For 6473/6473 co-relation queries the response was YES. [2025-03-17 14:01:03,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 891 events. 463/891 cut-off events. For 6473/6473 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4355 event pairs, 120 based on Foata normal form. 27/914 useless extension candidates. Maximal degree in co-relation 3577. Up to 340 conditions per place. [2025-03-17 14:01:03,007 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 17 changer transitions 30/107 dead transitions. [2025-03-17 14:01:03,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 978 flow [2025-03-17 14:01:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:01:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:01:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2025-03-17 14:01:03,008 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-03-17 14:01:03,009 INFO L175 Difference]: Start difference. First operand has 68 places, 43 transitions, 345 flow. Second operand 12 states and 186 transitions. [2025-03-17 14:01:03,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 978 flow [2025-03-17 14:01:03,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 107 transitions, 842 flow, removed 59 selfloop flow, removed 7 redundant places. [2025-03-17 14:01:03,018 INFO L231 Difference]: Finished difference. Result has 75 places, 48 transitions, 395 flow [2025-03-17 14:01:03,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=75, PETRI_TRANSITIONS=48} [2025-03-17 14:01:03,020 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-03-17 14:01:03,020 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 48 transitions, 395 flow [2025-03-17 14:01:03,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:03,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:03,021 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:03,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 14:01:03,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:03,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:03,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash 810027100, now seen corresponding path program 3 times [2025-03-17 14:01:03,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:03,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590988448] [2025-03-17 14:01:03,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:01:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:03,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:03,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 14:01:03,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-03-17 14:01:03,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:01:03,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:01:03,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:03,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:03,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:03,344 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:03,344 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590988448] [2025-03-17 14:01:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590988448] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:03,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:01:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936285743] [2025-03-17 14:01:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:03,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:01:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:03,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:01:03,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:01:03,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:03,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 48 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:03,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:03,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:03,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:03,586 INFO L124 PetriNetUnfolderBase]: 436/839 cut-off events. [2025-03-17 14:01:03,586 INFO L125 PetriNetUnfolderBase]: For 6137/6137 co-relation queries the response was YES. [2025-03-17 14:01:03,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 839 events. 436/839 cut-off events. For 6137/6137 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4066 event pairs, 152 based on Foata normal form. 27/862 useless extension candidates. Maximal degree in co-relation 3295. Up to 555 conditions per place. [2025-03-17 14:01:03,591 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 9 changer transitions 29/96 dead transitions. [2025-03-17 14:01:03,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 875 flow [2025-03-17 14:01:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 14:01:03,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 14:01:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2025-03-17 14:01:03,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2025-03-17 14:01:03,592 INFO L175 Difference]: Start difference. First operand has 75 places, 48 transitions, 395 flow. Second operand 10 states and 153 transitions. [2025-03-17 14:01:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 875 flow [2025-03-17 14:01:03,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 804 flow, removed 25 selfloop flow, removed 7 redundant places. [2025-03-17 14:01:03,601 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 405 flow [2025-03-17 14:01:03,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=405, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2025-03-17 14:01:03,601 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2025-03-17 14:01:03,601 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 405 flow [2025-03-17 14:01:03,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:03,602 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:03,602 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:03,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 14:01:03,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:03,802 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:03,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1508505852, now seen corresponding path program 4 times [2025-03-17 14:01:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:03,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748972046] [2025-03-17 14:01:03,803 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:01:03,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:03,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:03,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:03,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 14:01:03,839 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-03-17 14:01:03,846 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 14:01:03,846 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:01:03,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:03,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:01:03,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:03,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:03,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:03,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748972046] [2025-03-17 14:01:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748972046] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 14:01:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546778206] [2025-03-17 14:01:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:03,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:01:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:03,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:01:03,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:01:03,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:03,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:03,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:03,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:04,116 INFO L124 PetriNetUnfolderBase]: 463/887 cut-off events. [2025-03-17 14:01:04,117 INFO L125 PetriNetUnfolderBase]: For 6613/6613 co-relation queries the response was YES. [2025-03-17 14:01:04,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 887 events. 463/887 cut-off events. For 6613/6613 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4344 event pairs, 152 based on Foata normal form. 18/901 useless extension candidates. Maximal degree in co-relation 3472. Up to 456 conditions per place. [2025-03-17 14:01:04,120 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 54 selfloop transitions, 16 changer transitions 21/95 dead transitions. [2025-03-17 14:01:04,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 883 flow [2025-03-17 14:01:04,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 14:01:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 14:01:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-17 14:01:04,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5363984674329502 [2025-03-17 14:01:04,122 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 405 flow. Second operand 9 states and 140 transitions. [2025-03-17 14:01:04,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 883 flow [2025-03-17 14:01:04,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 827 flow, removed 21 selfloop flow, removed 7 redundant places. [2025-03-17 14:01:04,130 INFO L231 Difference]: Finished difference. Result has 81 places, 53 transitions, 468 flow [2025-03-17 14:01:04,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=468, PETRI_PLACES=81, PETRI_TRANSITIONS=53} [2025-03-17 14:01:04,131 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-03-17 14:01:04,131 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 53 transitions, 468 flow [2025-03-17 14:01:04,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:04,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:04,132 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:04,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-17 14:01:04,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:04,332 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:04,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1029340574, now seen corresponding path program 1 times [2025-03-17 14:01:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110169992] [2025-03-17 14:01:04,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:04,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:04,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:04,335 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:04,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 14:01:04,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:01:04,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:01:04,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:04,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:04,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:04,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:04,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:04,581 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:04,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110169992] [2025-03-17 14:01:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110169992] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:04,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:04,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-03-17 14:01:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048955851] [2025-03-17 14:01:04,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:04,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 14:01:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:04,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 14:01:04,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-17 14:01:04,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:04,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 53 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:04,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:04,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:05,214 INFO L124 PetriNetUnfolderBase]: 697/1284 cut-off events. [2025-03-17 14:01:05,214 INFO L125 PetriNetUnfolderBase]: For 14498/14498 co-relation queries the response was YES. [2025-03-17 14:01:05,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1284 events. 697/1284 cut-off events. For 14498/14498 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 6064 event pairs, 36 based on Foata normal form. 45/1325 useless extension candidates. Maximal degree in co-relation 5738. Up to 191 conditions per place. [2025-03-17 14:01:05,220 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 69 selfloop transitions, 43 changer transitions 60/176 dead transitions. [2025-03-17 14:01:05,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 176 transitions, 1752 flow [2025-03-17 14:01:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 14:01:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-17 14:01:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 323 transitions. [2025-03-17 14:01:05,222 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5303776683087028 [2025-03-17 14:01:05,222 INFO L175 Difference]: Start difference. First operand has 81 places, 53 transitions, 468 flow. Second operand 21 states and 323 transitions. [2025-03-17 14:01:05,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 176 transitions, 1752 flow [2025-03-17 14:01:05,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 176 transitions, 1659 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-03-17 14:01:05,238 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 885 flow [2025-03-17 14:01:05,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2025-03-17 14:01:05,239 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2025-03-17 14:01:05,239 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 885 flow [2025-03-17 14:01:05,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:01:05,239 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:05,239 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:05,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 14:01:05,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:05,444 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:05,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:05,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1628576787, now seen corresponding path program 1 times [2025-03-17 14:01:05,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:05,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255000175] [2025-03-17 14:01:05,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:05,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:05,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:05,446 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:05,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 14:01:05,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:01:05,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:01:05,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:05,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:05,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:05,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:05,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:05,558 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:05,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255000175] [2025-03-17 14:01:05,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255000175] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:05,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:05,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:01:05,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294795020] [2025-03-17 14:01:05,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:05,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:01:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:05,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:01:05,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:01:05,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:05,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:05,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:05,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:05,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:05,868 INFO L124 PetriNetUnfolderBase]: 679/1283 cut-off events. [2025-03-17 14:01:05,868 INFO L125 PetriNetUnfolderBase]: For 18449/18449 co-relation queries the response was YES. [2025-03-17 14:01:05,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 1283 events. 679/1283 cut-off events. For 18449/18449 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6458 event pairs, 239 based on Foata normal form. 27/1306 useless extension candidates. Maximal degree in co-relation 6019. Up to 828 conditions per place. [2025-03-17 14:01:05,875 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 73 selfloop transitions, 15 changer transitions 31/123 dead transitions. [2025-03-17 14:01:05,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 1563 flow [2025-03-17 14:01:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:01:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:01:05,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-17 14:01:05,876 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-17 14:01:05,876 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 885 flow. Second operand 11 states and 168 transitions. [2025-03-17 14:01:05,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 1563 flow [2025-03-17 14:01:05,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1129 flow, removed 198 selfloop flow, removed 14 redundant places. [2025-03-17 14:01:05,904 INFO L231 Difference]: Finished difference. Result has 99 places, 71 transitions, 650 flow [2025-03-17 14:01:05,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=650, PETRI_PLACES=99, PETRI_TRANSITIONS=71} [2025-03-17 14:01:05,904 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2025-03-17 14:01:05,905 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 71 transitions, 650 flow [2025-03-17 14:01:05,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:05,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:05,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:05,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 14:01:06,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:06,106 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:06,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2024791207, now seen corresponding path program 2 times [2025-03-17 14:01:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:06,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575375089] [2025-03-17 14:01:06,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:06,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:06,109 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:06,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 14:01:06,140 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:01:06,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:01:06,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:01:06,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:06,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:06,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:06,205 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:06,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575375089] [2025-03-17 14:01:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575375089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:06,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:06,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:01:06,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349781614] [2025-03-17 14:01:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:06,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:01:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:06,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:01:06,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:01:06,207 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:06,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 71 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:06,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:06,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:06,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:06,551 INFO L124 PetriNetUnfolderBase]: 877/1664 cut-off events. [2025-03-17 14:01:06,552 INFO L125 PetriNetUnfolderBase]: For 18541/18541 co-relation queries the response was YES. [2025-03-17 14:01:06,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1664 events. 877/1664 cut-off events. For 18541/18541 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9044 event pairs, 224 based on Foata normal form. 27/1687 useless extension candidates. Maximal degree in co-relation 7120. Up to 780 conditions per place. [2025-03-17 14:01:06,559 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 94 selfloop transitions, 22 changer transitions 27/147 dead transitions. [2025-03-17 14:01:06,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 1586 flow [2025-03-17 14:01:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 14:01:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 14:01:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2025-03-17 14:01:06,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5464190981432361 [2025-03-17 14:01:06,560 INFO L175 Difference]: Start difference. First operand has 99 places, 71 transitions, 650 flow. Second operand 13 states and 206 transitions. [2025-03-17 14:01:06,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 1586 flow [2025-03-17 14:01:06,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1465 flow, removed 48 selfloop flow, removed 8 redundant places. [2025-03-17 14:01:06,579 INFO L231 Difference]: Finished difference. Result has 107 places, 77 transitions, 774 flow [2025-03-17 14:01:06,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=774, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2025-03-17 14:01:06,579 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2025-03-17 14:01:06,579 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 774 flow [2025-03-17 14:01:06,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:06,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:06,579 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:06,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 14:01:06,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:06,780 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:06,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1821363433, now seen corresponding path program 3 times [2025-03-17 14:01:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827943064] [2025-03-17 14:01:06,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:01:06,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:06,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:06,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 14:01:06,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:01:06,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:01:06,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:01:06,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:06,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:06,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:06,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:06,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:06,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827943064] [2025-03-17 14:01:06,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827943064] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:06,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:06,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:01:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672526536] [2025-03-17 14:01:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:06,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:01:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:06,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:01:06,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:01:06,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:06,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 774 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:06,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:06,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:06,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:07,216 INFO L124 PetriNetUnfolderBase]: 832/1602 cut-off events. [2025-03-17 14:01:07,217 INFO L125 PetriNetUnfolderBase]: For 22340/22340 co-relation queries the response was YES. [2025-03-17 14:01:07,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7224 conditions, 1602 events. 832/1602 cut-off events. For 22340/22340 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8724 event pairs, 258 based on Foata normal form. 45/1643 useless extension candidates. Maximal degree in co-relation 7178. Up to 789 conditions per place. [2025-03-17 14:01:07,226 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 83 selfloop transitions, 22 changer transitions 31/140 dead transitions. [2025-03-17 14:01:07,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 140 transitions, 1665 flow [2025-03-17 14:01:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:01:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:01:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-03-17 14:01:07,228 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-17 14:01:07,228 INFO L175 Difference]: Start difference. First operand has 107 places, 77 transitions, 774 flow. Second operand 11 states and 174 transitions. [2025-03-17 14:01:07,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 140 transitions, 1665 flow [2025-03-17 14:01:07,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 1443 flow, removed 91 selfloop flow, removed 9 redundant places. [2025-03-17 14:01:07,257 INFO L231 Difference]: Finished difference. Result has 110 places, 80 transitions, 764 flow [2025-03-17 14:01:07,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=110, PETRI_TRANSITIONS=80} [2025-03-17 14:01:07,257 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-03-17 14:01:07,257 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 80 transitions, 764 flow [2025-03-17 14:01:07,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:07,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:07,258 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:07,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-17 14:01:07,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:07,458 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:07,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1676444127, now seen corresponding path program 4 times [2025-03-17 14:01:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053278878] [2025-03-17 14:01:07,459 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:01:07,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:07,462 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:07,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 14:01:07,495 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-17 14:01:07,502 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:01:07,502 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:01:07,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:07,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 14:01:07,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:07,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 14:01:07,592 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:07,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053278878] [2025-03-17 14:01:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053278878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:01:07,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:01:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 14:01:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606798959] [2025-03-17 14:01:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:01:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:01:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:07,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:01:07,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:01:07,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 80 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:07,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:07,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:07,882 INFO L124 PetriNetUnfolderBase]: 805/1544 cut-off events. [2025-03-17 14:01:07,882 INFO L125 PetriNetUnfolderBase]: For 19497/19497 co-relation queries the response was YES. [2025-03-17 14:01:07,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6640 conditions, 1544 events. 805/1544 cut-off events. For 19497/19497 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8332 event pairs, 311 based on Foata normal form. 27/1567 useless extension candidates. Maximal degree in co-relation 6593. Up to 1029 conditions per place. [2025-03-17 14:01:07,890 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 87 selfloop transitions, 16 changer transitions 31/138 dead transitions. [2025-03-17 14:01:07,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 138 transitions, 1504 flow [2025-03-17 14:01:07,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 14:01:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 14:01:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-17 14:01:07,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-17 14:01:07,892 INFO L175 Difference]: Start difference. First operand has 110 places, 80 transitions, 764 flow. Second operand 11 states and 168 transitions. [2025-03-17 14:01:07,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 138 transitions, 1504 flow [2025-03-17 14:01:07,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 138 transitions, 1425 flow, removed 24 selfloop flow, removed 6 redundant places. [2025-03-17 14:01:07,931 INFO L231 Difference]: Finished difference. Result has 116 places, 84 transitions, 806 flow [2025-03-17 14:01:07,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=116, PETRI_TRANSITIONS=84} [2025-03-17 14:01:07,931 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2025-03-17 14:01:07,931 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 84 transitions, 806 flow [2025-03-17 14:01:07,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2025-03-17 14:01:07,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:07,932 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:07,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-17 14:01:08,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:08,132 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:08,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash -122195739, now seen corresponding path program 1 times [2025-03-17 14:01:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:08,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110154456] [2025-03-17 14:01:08,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:01:08,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:08,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:08,136 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:08,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-17 14:01:08,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 14:01:08,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 14:01:08,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:08,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:08,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:01:08,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:08,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:08,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110154456] [2025-03-17 14:01:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110154456] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:08,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:08,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2025-03-17 14:01:08,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85761752] [2025-03-17 14:01:08,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:08,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 14:01:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:08,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 14:01:08,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-03-17 14:01:08,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:08,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 84 transitions, 806 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 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) [2025-03-17 14:01:08,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:08,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:08,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:09,255 INFO L124 PetriNetUnfolderBase]: 1219/2252 cut-off events. [2025-03-17 14:01:09,255 INFO L125 PetriNetUnfolderBase]: For 37881/37881 co-relation queries the response was YES. [2025-03-17 14:01:09,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10735 conditions, 2252 events. 1219/2252 cut-off events. For 37881/37881 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11703 event pairs, 66 based on Foata normal form. 54/2302 useless extension candidates. Maximal degree in co-relation 10685. Up to 320 conditions per place. [2025-03-17 14:01:09,266 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 98 selfloop transitions, 73 changer transitions 75/250 dead transitions. [2025-03-17 14:01:09,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 250 transitions, 2907 flow [2025-03-17 14:01:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-17 14:01:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-17 14:01:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 399 transitions. [2025-03-17 14:01:09,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291777188328912 [2025-03-17 14:01:09,267 INFO L175 Difference]: Start difference. First operand has 116 places, 84 transitions, 806 flow. Second operand 26 states and 399 transitions. [2025-03-17 14:01:09,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 250 transitions, 2907 flow [2025-03-17 14:01:09,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 250 transitions, 2765 flow, removed 59 selfloop flow, removed 9 redundant places. [2025-03-17 14:01:09,300 INFO L231 Difference]: Finished difference. Result has 145 places, 108 transitions, 1432 flow [2025-03-17 14:01:09,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1432, PETRI_PLACES=145, PETRI_TRANSITIONS=108} [2025-03-17 14:01:09,301 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2025-03-17 14:01:09,301 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 108 transitions, 1432 flow [2025-03-17 14:01:09,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 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) [2025-03-17 14:01:09,302 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:09,302 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:09,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-17 14:01:09,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:09,503 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:09,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -176524877, now seen corresponding path program 2 times [2025-03-17 14:01:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036922984] [2025-03-17 14:01:09,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:01:09,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:09,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:09,506 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:09,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-17 14:01:09,535 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-03-17 14:01:09,549 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 14:01:09,549 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:01:09,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:09,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:01:09,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:09,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:01:09,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:01:09,904 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:09,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036922984] [2025-03-17 14:01:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036922984] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:09,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-03-17 14:01:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718306042] [2025-03-17 14:01:09,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:09,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 14:01:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:09,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 14:01:09,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2025-03-17 14:01:09,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:09,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 108 transitions, 1432 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:09,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:09,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:09,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:11,258 INFO L124 PetriNetUnfolderBase]: 1651/3157 cut-off events. [2025-03-17 14:01:11,258 INFO L125 PetriNetUnfolderBase]: For 114949/114949 co-relation queries the response was YES. [2025-03-17 14:01:11,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19713 conditions, 3157 events. 1651/3157 cut-off events. For 114949/114949 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18108 event pairs, 292 based on Foata normal form. 81/3234 useless extension candidates. Maximal degree in co-relation 19651. Up to 1039 conditions per place. [2025-03-17 14:01:11,275 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 157 selfloop transitions, 74 changer transitions 101/336 dead transitions. [2025-03-17 14:01:11,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 336 transitions, 5264 flow [2025-03-17 14:01:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-17 14:01:11,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-17 14:01:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 530 transitions. [2025-03-17 14:01:11,277 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5221674876847291 [2025-03-17 14:01:11,277 INFO L175 Difference]: Start difference. First operand has 145 places, 108 transitions, 1432 flow. Second operand 35 states and 530 transitions. [2025-03-17 14:01:11,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 336 transitions, 5264 flow [2025-03-17 14:01:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 336 transitions, 4449 flow, removed 375 selfloop flow, removed 18 redundant places. [2025-03-17 14:01:11,373 INFO L231 Difference]: Finished difference. Result has 176 places, 140 transitions, 2028 flow [2025-03-17 14:01:11,373 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2028, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2025-03-17 14:01:11,374 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2025-03-17 14:01:11,374 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 2028 flow [2025-03-17 14:01:11,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:11,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:11,375 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:11,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-17 14:01:11,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:11,579 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:11,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1991630797, now seen corresponding path program 3 times [2025-03-17 14:01:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132181169] [2025-03-17 14:01:11,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:01:11,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:11,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:11,582 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:11,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-17 14:01:11,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 31 statements into 3 equivalence classes. [2025-03-17 14:01:11,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 14:01:11,623 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 14:01:11,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:11,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:01:11,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:11,730 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:01:11,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 14:01:11,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132181169] [2025-03-17 14:01:11,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132181169] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:11,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:11,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-03-17 14:01:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96770846] [2025-03-17 14:01:11,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:11,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 14:01:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:11,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 14:01:11,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2025-03-17 14:01:11,958 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:11,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 2028 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:11,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:11,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:11,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:13,831 INFO L124 PetriNetUnfolderBase]: 2119/4081 cut-off events. [2025-03-17 14:01:13,832 INFO L125 PetriNetUnfolderBase]: For 242362/242362 co-relation queries the response was YES. [2025-03-17 14:01:13,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30530 conditions, 4081 events. 2119/4081 cut-off events. For 242362/242362 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 24231 event pairs, 134 based on Foata normal form. 99/4176 useless extension candidates. Maximal degree in co-relation 30458. Up to 681 conditions per place. [2025-03-17 14:01:13,859 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 172 selfloop transitions, 123 changer transitions 93/392 dead transitions. [2025-03-17 14:01:13,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 392 transitions, 7321 flow [2025-03-17 14:01:13,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-03-17 14:01:13,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2025-03-17 14:01:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 602 transitions. [2025-03-17 14:01:13,861 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5322723253757736 [2025-03-17 14:01:13,861 INFO L175 Difference]: Start difference. First operand has 176 places, 140 transitions, 2028 flow. Second operand 39 states and 602 transitions. [2025-03-17 14:01:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 392 transitions, 7321 flow [2025-03-17 14:01:14,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 392 transitions, 5530 flow, removed 873 selfloop flow, removed 18 redundant places. [2025-03-17 14:01:14,043 INFO L231 Difference]: Finished difference. Result has 208 places, 173 transitions, 2976 flow [2025-03-17 14:01:14,043 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2976, PETRI_PLACES=208, PETRI_TRANSITIONS=173} [2025-03-17 14:01:14,044 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-03-17 14:01:14,044 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 173 transitions, 2976 flow [2025-03-17 14:01:14,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:14,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:14,044 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:14,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-17 14:01:14,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:14,245 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:14,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 533326391, now seen corresponding path program 4 times [2025-03-17 14:01:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:14,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959726536] [2025-03-17 14:01:14,246 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:01:14,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:14,248 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:14,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-17 14:01:14,285 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 31 statements into 2 equivalence classes. [2025-03-17 14:01:14,294 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 14:01:14,294 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:01:14,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:14,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 14:01:14,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:01:14,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:01:14,611 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:14,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959726536] [2025-03-17 14:01:14,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959726536] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:14,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:14,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2025-03-17 14:01:14,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791592583] [2025-03-17 14:01:14,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:14,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 14:01:14,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:14,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 14:01:14,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-17 14:01:14,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:14,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 173 transitions, 2976 flow. Second operand has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:14,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:14,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:14,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:16,503 INFO L124 PetriNetUnfolderBase]: 2137/4122 cut-off events. [2025-03-17 14:01:16,504 INFO L125 PetriNetUnfolderBase]: For 233411/233411 co-relation queries the response was YES. [2025-03-17 14:01:16,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29250 conditions, 4122 events. 2137/4122 cut-off events. For 233411/233411 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 24023 event pairs, 112 based on Foata normal form. 153/4271 useless extension candidates. Maximal degree in co-relation 29165. Up to 702 conditions per place. [2025-03-17 14:01:16,530 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 144 selfloop transitions, 144 changer transitions 133/425 dead transitions. [2025-03-17 14:01:16,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 425 transitions, 7992 flow [2025-03-17 14:01:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-17 14:01:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-03-17 14:01:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 611 transitions. [2025-03-17 14:01:16,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267241379310345 [2025-03-17 14:01:16,532 INFO L175 Difference]: Start difference. First operand has 208 places, 173 transitions, 2976 flow. Second operand 40 states and 611 transitions. [2025-03-17 14:01:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 425 transitions, 7992 flow [2025-03-17 14:01:16,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 425 transitions, 6423 flow, removed 758 selfloop flow, removed 20 redundant places. [2025-03-17 14:01:16,963 INFO L231 Difference]: Finished difference. Result has 241 places, 193 transitions, 3328 flow [2025-03-17 14:01:16,963 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3328, PETRI_PLACES=241, PETRI_TRANSITIONS=193} [2025-03-17 14:01:16,964 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2025-03-17 14:01:16,964 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 193 transitions, 3328 flow [2025-03-17 14:01:16,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.263157894736842) internal successors, (195), 19 states have internal predecessors, (195), 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) [2025-03-17 14:01:16,964 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:16,964 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:16,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-17 14:01:17,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:17,165 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:17,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 194122896, now seen corresponding path program 5 times [2025-03-17 14:01:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:17,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [236178455] [2025-03-17 14:01:17,166 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:01:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:17,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:17,168 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:17,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-17 14:01:17,198 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-03-17 14:01:17,210 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:01:17,210 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-17 14:01:17,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:17,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:01:17,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:17,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:17,612 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236178455] [2025-03-17 14:01:17,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236178455] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:17,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-03-17 14:01:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942520075] [2025-03-17 14:01:17,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:17,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 14:01:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:17,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 14:01:17,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2025-03-17 14:01:17,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:17,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 193 transitions, 3328 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-03-17 14:01:17,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:17,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:17,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:19,440 INFO L124 PetriNetUnfolderBase]: 2263/4436 cut-off events. [2025-03-17 14:01:19,440 INFO L125 PetriNetUnfolderBase]: For 327500/327500 co-relation queries the response was YES. [2025-03-17 14:01:19,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33207 conditions, 4436 events. 2263/4436 cut-off events. For 327500/327500 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 25941 event pairs, 953 based on Foata normal form. 117/4549 useless extension candidates. Maximal degree in co-relation 33109. Up to 3024 conditions per place. [2025-03-17 14:01:19,512 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 241 selfloop transitions, 33 changer transitions 133/411 dead transitions. [2025-03-17 14:01:19,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 411 transitions, 8674 flow [2025-03-17 14:01:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-03-17 14:01:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-03-17 14:01:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 552 transitions. [2025-03-17 14:01:19,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144454799627214 [2025-03-17 14:01:19,515 INFO L175 Difference]: Start difference. First operand has 241 places, 193 transitions, 3328 flow. Second operand 37 states and 552 transitions. [2025-03-17 14:01:19,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 411 transitions, 8674 flow [2025-03-17 14:01:19,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 411 transitions, 7542 flow, removed 503 selfloop flow, removed 29 redundant places. [2025-03-17 14:01:19,810 INFO L231 Difference]: Finished difference. Result has 267 places, 209 transitions, 3513 flow [2025-03-17 14:01:19,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2616, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3513, PETRI_PLACES=267, PETRI_TRANSITIONS=209} [2025-03-17 14:01:19,810 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2025-03-17 14:01:19,810 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 209 transitions, 3513 flow [2025-03-17 14:01:19,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-03-17 14:01:19,810 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:19,810 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:19,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-17 14:01:20,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:20,011 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:20,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:20,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1251672112, now seen corresponding path program 6 times [2025-03-17 14:01:20,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:20,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838126585] [2025-03-17 14:01:20,012 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:01:20,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:20,015 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:20,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-17 14:01:20,045 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 37 statements into 5 equivalence classes. [2025-03-17 14:01:20,059 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:01:20,059 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-17 14:01:20,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:20,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:01:20,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:01:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:20,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:01:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:01:20,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 14:01:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838126585] [2025-03-17 14:01:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838126585] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:01:20,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 14:01:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2025-03-17 14:01:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726751223] [2025-03-17 14:01:20,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 14:01:20,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-17 14:01:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 14:01:20,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-17 14:01:20,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2025-03-17 14:01:20,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:01:20,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 209 transitions, 3513 flow. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-03-17 14:01:20,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:01:20,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:01:20,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:01:23,130 INFO L124 PetriNetUnfolderBase]: 2533/5032 cut-off events. [2025-03-17 14:01:23,131 INFO L125 PetriNetUnfolderBase]: For 540838/540838 co-relation queries the response was YES. [2025-03-17 14:01:23,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42302 conditions, 5032 events. 2533/5032 cut-off events. For 540838/540838 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 30896 event pairs, 694 based on Foata normal form. 117/5145 useless extension candidates. Maximal degree in co-relation 42190. Up to 2242 conditions per place. [2025-03-17 14:01:23,168 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 234 selfloop transitions, 103 changer transitions 149/490 dead transitions. [2025-03-17 14:01:23,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 490 transitions, 11000 flow [2025-03-17 14:01:23,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-03-17 14:01:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2025-03-17 14:01:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 673 transitions. [2025-03-17 14:01:23,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5157088122605364 [2025-03-17 14:01:23,171 INFO L175 Difference]: Start difference. First operand has 267 places, 209 transitions, 3513 flow. Second operand 45 states and 673 transitions. [2025-03-17 14:01:23,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 490 transitions, 11000 flow [2025-03-17 14:01:23,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 490 transitions, 9333 flow, removed 815 selfloop flow, removed 21 redundant places. [2025-03-17 14:01:23,676 INFO L231 Difference]: Finished difference. Result has 303 places, 240 transitions, 4318 flow [2025-03-17 14:01:23,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4318, PETRI_PLACES=303, PETRI_TRANSITIONS=240} [2025-03-17 14:01:23,676 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2025-03-17 14:01:23,676 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 240 transitions, 4318 flow [2025-03-17 14:01:23,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 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) [2025-03-17 14:01:23,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:01:23,677 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:01:23,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-17 14:01:23,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:23,877 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:01:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:01:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1614462614, now seen corresponding path program 7 times [2025-03-17 14:01:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 14:01:23,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667457616] [2025-03-17 14:01:23,878 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:01:23,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:01:23,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:01:23,880 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 14:01:23,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-17 14:01:23,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-17 14:01:23,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:01:23,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:01:23,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:01:23,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-17 14:01:23,920 INFO L279 TraceCheckSpWp]: Computing forward predicates...