./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.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-C-DAC/pthread-demo-datarace-3.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 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:16:22,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:16:22,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:16:22,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:16:22,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:16:22,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:16:22,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:16:22,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:16:22,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:16:22,865 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:16:22,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:16:22,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:16:22,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:16:22,866 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:16:22,866 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:16:22,867 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:16:22,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:22,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:16:22,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:16:22,868 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 -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382 [2025-03-17 14:16:23,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:16:23,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:16:23,129 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:16:23,130 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:16:23,130 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:16:23,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-03-17 14:16:24,226 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da85a85c8/c875635eb47148a18dbbaafbe0e4f5d8/FLAG46864777e [2025-03-17 14:16:24,507 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:16:24,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i [2025-03-17 14:16:24,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da85a85c8/c875635eb47148a18dbbaafbe0e4f5d8/FLAG46864777e [2025-03-17 14:16:24,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da85a85c8/c875635eb47148a18dbbaafbe0e4f5d8 [2025-03-17 14:16:24,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:16:24,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:16:24,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:24,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:16:24,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:16:24,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:24" (1/1) ... [2025-03-17 14:16:24,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3a095d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:24, skipping insertion in model container [2025-03-17 14:16:24,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:16:24" (1/1) ... [2025-03-17 14:16:24,837 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:16:25,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:25,129 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:16:25,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:16:25,220 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:16:25,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25 WrapperNode [2025-03-17 14:16:25,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:16:25,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:25,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:16:25,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:16:25,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,260 INFO L138 Inliner]: procedures = 364, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2025-03-17 14:16:25,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:16:25,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:16:25,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:16:25,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:16:25,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,281 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 14:16:25,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,286 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:16:25,293 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:16:25,293 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:16:25,293 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:16:25,294 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (1/1) ... [2025-03-17 14:16:25,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:16:25,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:25,319 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 14:16:25,321 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 14:16:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 14:16:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 14:16:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2025-03-17 14:16:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2025-03-17 14:16:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:16:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:16:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:16:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:16:25,337 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 14:16:25,425 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:16:25,426 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:16:25,565 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:16:25,566 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:16:25,713 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:16:25,714 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:16:25,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:25 BoogieIcfgContainer [2025-03-17 14:16:25,714 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:16:25,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:16:25,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:16:25,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:16:25,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:16:24" (1/3) ... [2025-03-17 14:16:25,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f7508f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:25, skipping insertion in model container [2025-03-17 14:16:25,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:16:25" (2/3) ... [2025-03-17 14:16:25,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f7508f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:16:25, skipping insertion in model container [2025-03-17 14:16:25,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:16:25" (3/3) ... [2025-03-17 14:16:25,721 INFO L128 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i [2025-03-17 14:16:25,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:16:25,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pthread-demo-datarace-3.i that has 2 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 14:16:25,733 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:16:25,766 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 14:16:25,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 27 transitions, 61 flow [2025-03-17 14:16:25,817 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-03-17 14:16:25,821 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:16:25,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 26 events. 4/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 12. Up to 2 conditions per place. [2025-03-17 14:16:25,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 27 transitions, 61 flow [2025-03-17 14:16:25,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 56 flow [2025-03-17 14:16:25,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:16:25,844 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;@1c011353, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:16:25,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-17 14:16:25,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:16:25,850 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2025-03-17 14:16:25,850 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:16:25,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:25,851 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:25,851 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:25,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1914804769, now seen corresponding path program 1 times [2025-03-17 14:16:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:25,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444907341] [2025-03-17 14:16:25,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:25,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 14:16:25,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 14:16:25,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:25,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:26,092 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 14:16:26,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444907341] [2025-03-17 14:16:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444907341] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:26,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:16:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145152133] [2025-03-17 14:16:26,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:26,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:26,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:26,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:26,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:26,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 14:16:26,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:26,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:26,183 INFO L124 PetriNetUnfolderBase]: 37/90 cut-off events. [2025-03-17 14:16:26,184 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 14:16:26,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 90 events. 37/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 277 event pairs, 15 based on Foata normal form. 9/98 useless extension candidates. Maximal degree in co-relation 154. Up to 54 conditions per place. [2025-03-17 14:16:26,186 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 21 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2025-03-17 14:16:26,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 108 flow [2025-03-17 14:16:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-03-17 14:16:26,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-17 14:16:26,196 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 56 flow. Second operand 3 states and 48 transitions. [2025-03-17 14:16:26,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 108 flow [2025-03-17 14:16:26,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:26,201 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 52 flow [2025-03-17 14:16:26,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2025-03-17 14:16:26,206 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2025-03-17 14:16:26,206 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 52 flow [2025-03-17 14:16:26,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 14:16:26,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:26,207 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:26,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:16:26,207 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 565344361, now seen corresponding path program 1 times [2025-03-17 14:16:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:26,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655082755] [2025-03-17 14:16:26,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:26,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:26,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 14:16:26,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 14:16:26,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:26,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:16:26,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:26,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655082755] [2025-03-17 14:16:26,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655082755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:26,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:26,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:16:26,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016692475] [2025-03-17 14:16:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:26,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:16:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:26,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:16:26,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:16:26,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-17 14:16:26,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 14:16:26,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:26,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-17 14:16:26,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:26,363 INFO L124 PetriNetUnfolderBase]: 51/122 cut-off events. [2025-03-17 14:16:26,365 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2025-03-17 14:16:26,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 122 events. 51/122 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 370 event pairs, 20 based on Foata normal form. 5/127 useless extension candidates. Maximal degree in co-relation 65. Up to 66 conditions per place. [2025-03-17 14:16:26,367 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2025-03-17 14:16:26,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 28 transitions, 122 flow [2025-03-17 14:16:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:16:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:16:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2025-03-17 14:16:26,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-03-17 14:16:26,369 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 52 flow. Second operand 3 states and 46 transitions. [2025-03-17 14:16:26,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 28 transitions, 122 flow [2025-03-17 14:16:26,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:26,371 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 62 flow [2025-03-17 14:16:26,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2025-03-17 14:16:26,372 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2025-03-17 14:16:26,372 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 62 flow [2025-03-17 14:16:26,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 14:16:26,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:26,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:26,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:16:26,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:26,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:26,374 INFO L85 PathProgramCache]: Analyzing trace with hash -335850864, now seen corresponding path program 1 times [2025-03-17 14:16:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962454787] [2025-03-17 14:16:26,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:26,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:16:26,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:16:26,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:26,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:26,486 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 14:16:26,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:26,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962454787] [2025-03-17 14:16:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962454787] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9546662] [2025-03-17 14:16:26,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:16:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:26,489 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 14:16:26,491 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 14:16:26,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 14:16:26,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 14:16:26,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:26,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:26,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 14:16:26,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:26,623 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 14:16:26,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:26,648 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 14:16:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9546662] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:26,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-17 14:16:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446524802] [2025-03-17 14:16:26,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:26,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 14:16:26,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:26,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 14:16:26,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-17 14:16:26,652 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:26,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 14:16:26,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:26,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:26,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:26,758 INFO L124 PetriNetUnfolderBase]: 116/242 cut-off events. [2025-03-17 14:16:26,758 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-03-17 14:16:26,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 242 events. 116/242 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 714 event pairs, 8 based on Foata normal form. 15/257 useless extension candidates. Maximal degree in co-relation 153. Up to 69 conditions per place. [2025-03-17 14:16:26,762 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 42 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2025-03-17 14:16:26,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 52 transitions, 248 flow [2025-03-17 14:16:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 14:16:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 14:16:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2025-03-17 14:16:26,763 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2025-03-17 14:16:26,763 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 62 flow. Second operand 6 states and 88 transitions. [2025-03-17 14:16:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 52 transitions, 248 flow [2025-03-17 14:16:26,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 52 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:26,764 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 100 flow [2025-03-17 14:16:26,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-03-17 14:16:26,765 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2025-03-17 14:16:26,765 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 100 flow [2025-03-17 14:16:26,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 14:16:26,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:26,765 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:26,771 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 14:16:26,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:26,966 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:26,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1286615683, now seen corresponding path program 2 times [2025-03-17 14:16:26,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:26,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046564485] [2025-03-17 14:16:26,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:16:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:27,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-03-17 14:16:27,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 34 statements. [2025-03-17 14:16:27,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:16:27,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-17 14:16:27,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:27,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046564485] [2025-03-17 14:16:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046564485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:16:27,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:16:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 14:16:27,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724700223] [2025-03-17 14:16:27,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:16:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 14:16:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:27,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 14:16:27,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 14:16:27,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:27,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 14:16:27,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:27,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:27,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:27,141 INFO L124 PetriNetUnfolderBase]: 149/360 cut-off events. [2025-03-17 14:16:27,141 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2025-03-17 14:16:27,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 360 events. 149/360 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1403 event pairs, 54 based on Foata normal form. 19/378 useless extension candidates. Maximal degree in co-relation 581. Up to 154 conditions per place. [2025-03-17 14:16:27,145 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2025-03-17 14:16:27,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 296 flow [2025-03-17 14:16:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 14:16:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 14:16:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2025-03-17 14:16:27,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-17 14:16:27,147 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 100 flow. Second operand 4 states and 60 transitions. [2025-03-17 14:16:27,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 296 flow [2025-03-17 14:16:27,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 272 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-17 14:16:27,149 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 108 flow [2025-03-17 14:16:27,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-17 14:16:27,149 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 10 predicate places. [2025-03-17 14:16:27,149 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 108 flow [2025-03-17 14:16:27,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 14:16:27,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:27,151 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:27,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:16:27,151 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:27,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1958799600, now seen corresponding path program 3 times [2025-03-17 14:16:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810713606] [2025-03-17 14:16:27,152 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:16:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:27,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-03-17 14:16:27,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:16:27,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 14:16:27,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-17 14:16:27,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810713606] [2025-03-17 14:16:27,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810713606] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:27,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282073351] [2025-03-17 14:16:27,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:16:27,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:27,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:27,260 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 14:16:27,261 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 14:16:27,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 3 equivalence classes. [2025-03-17 14:16:27,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 37 of 37 statements. [2025-03-17 14:16:27,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-17 14:16:27,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:27,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 14:16:27,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-17 14:16:27,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-17 14:16:27,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282073351] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:27,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-17 14:16:27,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318872124] [2025-03-17 14:16:27,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:27,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 14:16:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:27,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 14:16:27,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-17 14:16:27,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-17 14:16:27,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 108 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 14:16:27,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:27,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-17 14:16:27,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:27,588 INFO L124 PetriNetUnfolderBase]: 382/796 cut-off events. [2025-03-17 14:16:27,588 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2025-03-17 14:16:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2221 conditions, 796 events. 382/796 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3529 event pairs, 36 based on Foata normal form. 76/872 useless extension candidates. Maximal degree in co-relation 1414. Up to 134 conditions per place. [2025-03-17 14:16:27,596 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 81 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2025-03-17 14:16:27,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 93 transitions, 602 flow [2025-03-17 14:16:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:16:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:16:27,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 120 transitions. [2025-03-17 14:16:27,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-17 14:16:27,599 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 108 flow. Second operand 8 states and 120 transitions. [2025-03-17 14:16:27,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 93 transitions, 602 flow [2025-03-17 14:16:27,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 93 transitions, 596 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:27,604 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 160 flow [2025-03-17 14:16:27,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2025-03-17 14:16:27,606 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2025-03-17 14:16:27,606 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 160 flow [2025-03-17 14:16:27,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 14:16:27,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:27,606 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:27,613 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 14:16:27,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:27,810 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:27,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:27,811 INFO L85 PathProgramCache]: Analyzing trace with hash -76176848, now seen corresponding path program 4 times [2025-03-17 14:16:27,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:27,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323122476] [2025-03-17 14:16:27,811 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:16:27,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:27,833 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-17 14:16:27,846 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-17 14:16:27,848 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:16:27,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 14:16:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323122476] [2025-03-17 14:16:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323122476] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827685557] [2025-03-17 14:16:27,971 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:16:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:27,974 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 14:16:27,976 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 14:16:28,045 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-03-17 14:16:28,063 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-03-17 14:16:28,063 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:16:28,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:28,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-17 14:16:28,067 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 14:16:28,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-17 14:16:28,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827685557] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:28,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:28,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-17 14:16:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891441295] [2025-03-17 14:16:28,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:28,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-17 14:16:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:28,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-17 14:16:28,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-17 14:16:28,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-17 14:16:28,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 160 flow. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:16:28,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:28,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-17 14:16:28,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:28,524 INFO L124 PetriNetUnfolderBase]: 816/1694 cut-off events. [2025-03-17 14:16:28,524 INFO L125 PetriNetUnfolderBase]: For 3460/3460 co-relation queries the response was YES. [2025-03-17 14:16:28,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 1694 events. 816/1694 cut-off events. For 3460/3460 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7818 event pairs, 49 based on Foata normal form. 152/1846 useless extension candidates. Maximal degree in co-relation 3667. Up to 304 conditions per place. [2025-03-17 14:16:28,532 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 169 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2025-03-17 14:16:28,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 189 transitions, 1348 flow [2025-03-17 14:16:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-17 14:16:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-17 14:16:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 244 transitions. [2025-03-17 14:16:28,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2025-03-17 14:16:28,534 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 160 flow. Second operand 16 states and 244 transitions. [2025-03-17 14:16:28,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 189 transitions, 1348 flow [2025-03-17 14:16:28,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 189 transitions, 1296 flow, removed 24 selfloop flow, removed 2 redundant places. [2025-03-17 14:16:28,541 INFO L231 Difference]: Finished difference. Result has 67 places, 38 transitions, 264 flow [2025-03-17 14:16:28,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=264, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2025-03-17 14:16:28,543 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 42 predicate places. [2025-03-17 14:16:28,543 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 38 transitions, 264 flow [2025-03-17 14:16:28,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 14:16:28,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:28,544 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:28,550 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 14:16:28,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:28,744 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:28,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1818776732, now seen corresponding path program 5 times [2025-03-17 14:16:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099629488] [2025-03-17 14:16:28,745 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:16:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:28,757 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 73 statements into 15 equivalence classes. [2025-03-17 14:16:28,767 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 73 of 73 statements. [2025-03-17 14:16:28,767 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-17 14:16:28,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-03-17 14:16:28,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099629488] [2025-03-17 14:16:28,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099629488] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:28,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818645290] [2025-03-17 14:16:28,882 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:16:28,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:28,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:28,884 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 14:16:28,885 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 14:16:28,957 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 73 statements into 15 equivalence classes. [2025-03-17 14:16:28,981 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 73 of 73 statements. [2025-03-17 14:16:28,981 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-17 14:16:28,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:28,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 14:16:28,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-03-17 14:16:29,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:29,150 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2025-03-17 14:16:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818645290] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:29,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-17 14:16:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144126267] [2025-03-17 14:16:29,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:29,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 14:16:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:29,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 14:16:29,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-03-17 14:16:29,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:29,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 38 transitions, 264 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 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 14:16:29,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:29,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:29,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:29,534 INFO L124 PetriNetUnfolderBase]: 1540/3165 cut-off events. [2025-03-17 14:16:29,535 INFO L125 PetriNetUnfolderBase]: For 7996/7996 co-relation queries the response was YES. [2025-03-17 14:16:29,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10598 conditions, 3165 events. 1540/3165 cut-off events. For 7996/7996 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18087 event pairs, 58 based on Foata normal form. 180/3345 useless extension candidates. Maximal degree in co-relation 9327. Up to 795 conditions per place. [2025-03-17 14:16:29,551 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 222 selfloop transitions, 12 changer transitions 0/240 dead transitions. [2025-03-17 14:16:29,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 240 transitions, 2270 flow [2025-03-17 14:16:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 14:16:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 14:16:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2025-03-17 14:16:29,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2025-03-17 14:16:29,553 INFO L175 Difference]: Start difference. First operand has 67 places, 38 transitions, 264 flow. Second operand 12 states and 181 transitions. [2025-03-17 14:16:29,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 240 transitions, 2270 flow [2025-03-17 14:16:29,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 240 transitions, 2160 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 14:16:29,566 INFO L231 Difference]: Finished difference. Result has 80 places, 45 transitions, 350 flow [2025-03-17 14:16:29,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=80, PETRI_TRANSITIONS=45} [2025-03-17 14:16:29,568 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 55 predicate places. [2025-03-17 14:16:29,568 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 45 transitions, 350 flow [2025-03-17 14:16:29,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 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 14:16:29,569 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:29,569 INFO L206 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:29,575 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 14:16:29,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:29,769 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:29,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -624556328, now seen corresponding path program 6 times [2025-03-17 14:16:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106909546] [2025-03-17 14:16:29,770 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:16:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:29,788 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 14 equivalence classes. [2025-03-17 14:16:29,812 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 14:16:29,813 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-03-17 14:16:29,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-17 14:16:30,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:30,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106909546] [2025-03-17 14:16:30,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106909546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:30,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612216284] [2025-03-17 14:16:30,112 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-17 14:16:30,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:30,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:30,114 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 14:16:30,115 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 14:16:30,182 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 14 equivalence classes. [2025-03-17 14:16:30,235 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 103 of 103 statements. [2025-03-17 14:16:30,235 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-03-17 14:16:30,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:30,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 14:16:30,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-17 14:16:30,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 390 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2025-03-17 14:16:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612216284] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:30,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2025-03-17 14:16:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222362268] [2025-03-17 14:16:30,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:30,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 14:16:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:30,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 14:16:30,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-03-17 14:16:30,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-17 14:16:30,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 45 transitions, 350 flow. Second operand has 23 states, 23 states have (on average 9.73913043478261) internal successors, (224), 23 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 14:16:30,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:30,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-17 14:16:30,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:31,427 INFO L124 PetriNetUnfolderBase]: 2649/5383 cut-off events. [2025-03-17 14:16:31,427 INFO L125 PetriNetUnfolderBase]: For 35422/35422 co-relation queries the response was YES. [2025-03-17 14:16:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20210 conditions, 5383 events. 2649/5383 cut-off events. For 35422/35422 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 30418 event pairs, 84 based on Foata normal form. 258/5641 useless extension candidates. Maximal degree in co-relation 16638. Up to 946 conditions per place. [2025-03-17 14:16:31,458 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 361 selfloop transitions, 22 changer transitions 0/388 dead transitions. [2025-03-17 14:16:31,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 388 transitions, 3950 flow [2025-03-17 14:16:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 14:16:31,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 14:16:31,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 332 transitions. [2025-03-17 14:16:31,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5589225589225589 [2025-03-17 14:16:31,460 INFO L175 Difference]: Start difference. First operand has 80 places, 45 transitions, 350 flow. Second operand 22 states and 332 transitions. [2025-03-17 14:16:31,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 388 transitions, 3950 flow [2025-03-17 14:16:31,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 388 transitions, 3824 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 14:16:31,485 INFO L231 Difference]: Finished difference. Result has 105 places, 52 transitions, 488 flow [2025-03-17 14:16:31,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=488, PETRI_PLACES=105, PETRI_TRANSITIONS=52} [2025-03-17 14:16:31,486 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 80 predicate places. [2025-03-17 14:16:31,486 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 52 transitions, 488 flow [2025-03-17 14:16:31,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.73913043478261) internal successors, (224), 23 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 14:16:31,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:31,487 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:31,494 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 14:16:31,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:31,691 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:31,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1547329846, now seen corresponding path program 7 times [2025-03-17 14:16:31,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:31,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848710829] [2025-03-17 14:16:31,692 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:16:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:31,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 14:16:31,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 14:16:31,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:31,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-03-17 14:16:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848710829] [2025-03-17 14:16:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848710829] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734252406] [2025-03-17 14:16:31,931 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-17 14:16:31,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:31,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:31,933 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 14:16:31,934 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 14:16:32,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-17 14:16:32,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-17 14:16:32,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:16:32,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:32,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 14:16:32,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-03-17 14:16:32,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-03-17 14:16:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734252406] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:32,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:32,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2025-03-17 14:16:32,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770822907] [2025-03-17 14:16:32,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:32,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-17 14:16:32,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:32,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-17 14:16:32,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-03-17 14:16:32,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:32,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 52 transitions, 488 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 14:16:32,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:32,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:32,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:16:33,527 INFO L124 PetriNetUnfolderBase]: 4231/8704 cut-off events. [2025-03-17 14:16:33,527 INFO L125 PetriNetUnfolderBase]: For 50482/50482 co-relation queries the response was YES. [2025-03-17 14:16:33,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34721 conditions, 8704 events. 4231/8704 cut-off events. For 50482/50482 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 54737 event pairs, 182 based on Foata normal form. 420/9124 useless extension candidates. Maximal degree in co-relation 31507. Up to 2163 conditions per place. [2025-03-17 14:16:33,578 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 548 selfloop transitions, 22 changer transitions 0/577 dead transitions. [2025-03-17 14:16:33,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 577 transitions, 6914 flow [2025-03-17 14:16:33,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 14:16:33,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 14:16:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 335 transitions. [2025-03-17 14:16:33,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.563973063973064 [2025-03-17 14:16:33,579 INFO L175 Difference]: Start difference. First operand has 105 places, 52 transitions, 488 flow. Second operand 22 states and 335 transitions. [2025-03-17 14:16:33,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 577 transitions, 6914 flow [2025-03-17 14:16:33,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 577 transitions, 6368 flow, removed 0 selfloop flow, removed 13 redundant places. [2025-03-17 14:16:33,636 INFO L231 Difference]: Finished difference. Result has 124 places, 63 transitions, 662 flow [2025-03-17 14:16:33,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=662, PETRI_PLACES=124, PETRI_TRANSITIONS=63} [2025-03-17 14:16:33,637 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 99 predicate places. [2025-03-17 14:16:33,638 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 63 transitions, 662 flow [2025-03-17 14:16:33,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 14:16:33,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:16:33,639 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:16:33,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-17 14:16:33,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:33,839 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-17 14:16:33,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:16:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 730407498, now seen corresponding path program 8 times [2025-03-17 14:16:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:16:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141938078] [2025-03-17 14:16:33,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:16:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:16:33,856 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 171 statements into 2 equivalence classes. [2025-03-17 14:16:33,887 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 171 of 171 statements. [2025-03-17 14:16:33,887 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:16:33,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:16:35,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:16:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141938078] [2025-03-17 14:16:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141938078] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 14:16:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32463899] [2025-03-17 14:16:35,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:16:35,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:16:35,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:16:35,959 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 14:16:35,960 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 14:16:36,030 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 171 statements into 2 equivalence classes. [2025-03-17 14:16:36,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 171 of 171 statements. [2025-03-17 14:16:36,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 14:16:36,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:16:36,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 82 conjuncts are in the unsatisfiable core [2025-03-17 14:16:36,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 14:16:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:16:36,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 14:16:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 14:16:37,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32463899] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 14:16:37,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 14:16:37,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 69 [2025-03-17 14:16:37,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002547990] [2025-03-17 14:16:37,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 14:16:37,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-03-17 14:16:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:16:37,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-03-17 14:16:37,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1258, Invalid=3572, Unknown=0, NotChecked=0, Total=4830 [2025-03-17 14:16:37,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 14:16:37,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 63 transitions, 662 flow. Second operand has 70 states, 70 states have (on average 9.228571428571428) internal successors, (646), 70 states have internal predecessors, (646), 0 states have call successors, (0), 0 states 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 14:16:37,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:16:37,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 14:16:37,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand