./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/triangular-1.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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 13:59:47,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 13:59:47,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 13:59:47,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 13:59:47,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 13:59:47,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 13:59:47,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 13:59:47,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 13:59:47,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 13:59:47,946 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 13:59:47,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 13:59:47,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 13:59:47,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 13:59:47,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 13:59:47,946 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 13:59:47,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 13:59:47,947 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:47,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 13:59:47,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 13:59:47,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 13:59:47,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 13:59:47,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 13:59:47,948 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 13:59:47,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 13:59:47,948 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 -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2025-03-17 13:59:48,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 13:59:48,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 13:59:48,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 13:59:48,174 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 13:59:48,175 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 13:59:48,176 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2025-03-17 13:59:49,296 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d029bf7a/1b344d5785584f298bcd21ef91e5a513/FLAG16f803fb9 [2025-03-17 13:59:49,586 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 13:59:49,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2025-03-17 13:59:49,602 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d029bf7a/1b344d5785584f298bcd21ef91e5a513/FLAG16f803fb9 [2025-03-17 13:59:49,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d029bf7a/1b344d5785584f298bcd21ef91e5a513 [2025-03-17 13:59:49,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 13:59:49,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 13:59:49,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:49,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 13:59:49,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 13:59:49,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556dee0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49, skipping insertion in model container [2025-03-17 13:59:49,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 13:59:49,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:49,877 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 13:59:49,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 13:59:49,928 INFO L204 MainTranslator]: Completed translation [2025-03-17 13:59:49,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49 WrapperNode [2025-03-17 13:59:49,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 13:59:49,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:49,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 13:59:49,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 13:59:49,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,956 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-03-17 13:59:49,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 13:59:49,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 13:59:49,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 13:59:49,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 13:59:49,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,962 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,970 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 13:59:49,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,971 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,973 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,973 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,976 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 13:59:49,976 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 13:59:49,976 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 13:59:49,976 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 13:59:49,977 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (1/1) ... [2025-03-17 13:59:49,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 13:59:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:49,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 13:59:50,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 13:59:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-03-17 13:59:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-03-17 13:59:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 13:59:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 13:59:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 13:59:50,021 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 13:59:50,118 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 13:59:50,120 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 13:59:50,231 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 13:59:50,231 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 13:59:50,297 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 13:59:50,297 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 13:59:50,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:50 BoogieIcfgContainer [2025-03-17 13:59:50,298 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 13:59:50,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 13:59:50,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 13:59:50,306 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 13:59:50,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 01:59:49" (1/3) ... [2025-03-17 13:59:50,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7541c009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:50, skipping insertion in model container [2025-03-17 13:59:50,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 01:59:49" (2/3) ... [2025-03-17 13:59:50,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7541c009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 01:59:50, skipping insertion in model container [2025-03-17 13:59:50,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:50" (3/3) ... [2025-03-17 13:59:50,309 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2025-03-17 13:59:50,320 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 13:59:50,323 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-1.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-17 13:59:50,323 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 13:59:50,350 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 13:59:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 13:59:50,398 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-03-17 13:59:50,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:50,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-17 13:59:50,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-03-17 13:59:50,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-03-17 13:59:50,412 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 13:59:50,420 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;@18245acc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 13:59:50,421 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 13:59:50,429 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 13:59:50,430 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-03-17 13:59:50,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:50,430 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:50,431 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:50,431 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:50,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:50,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746502, now seen corresponding path program 1 times [2025-03-17 13:59:50,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631080883] [2025-03-17 13:59:50,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:50,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:59:50,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:59:50,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:50,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:50,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:50,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631080883] [2025-03-17 13:59:50,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631080883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 13:59:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672472638] [2025-03-17 13:59:50,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:50,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 13:59:50,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:50,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 13:59:50,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 13:59:50,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:50,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:50,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:50,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:50,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:50,755 INFO L124 PetriNetUnfolderBase]: 185/359 cut-off events. [2025-03-17 13:59:50,755 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 13:59:50,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 359 events. 185/359 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1574 event pairs, 135 based on Foata normal form. 32/386 useless extension candidates. Maximal degree in co-relation 653. Up to 290 conditions per place. [2025-03-17 13:59:50,761 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-03-17 13:59:50,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-03-17 13:59:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 13:59:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 13:59:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-03-17 13:59:50,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-03-17 13:59:50,770 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-03-17 13:59:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-03-17 13:59:50,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:50,775 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-03-17 13:59:50,776 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-03-17 13:59:50,780 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-03-17 13:59:50,781 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-03-17 13:59:50,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:50,782 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:50,782 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:50,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 13:59:50,782 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:50,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:50,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1190746953, now seen corresponding path program 1 times [2025-03-17 13:59:50,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:50,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750633694] [2025-03-17 13:59:50,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:50,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:50,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 13:59:50,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 13:59:50,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:50,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:50,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:50,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750633694] [2025-03-17 13:59:50,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750633694] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:50,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:50,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 13:59:50,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038399736] [2025-03-17 13:59:50,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:50,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 13:59:50,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:50,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 13:59:50,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 13:59:50,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:50,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:50,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:50,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:50,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:51,093 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2025-03-17 13:59:51,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 13:59:51,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1985 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2025-03-17 13:59:51,095 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2025-03-17 13:59:51,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2025-03-17 13:59:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 13:59:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 13:59:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2025-03-17 13:59:51,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-03-17 13:59:51,096 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2025-03-17 13:59:51,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2025-03-17 13:59:51,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 13:59:51,098 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2025-03-17 13:59:51,098 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2025-03-17 13:59:51,098 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-03-17 13:59:51,099 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2025-03-17 13:59:51,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,099 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:51,099 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:51,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 13:59:51,099 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:51,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:51,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1318103228, now seen corresponding path program 1 times [2025-03-17 13:59:51,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:51,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125725538] [2025-03-17 13:59:51,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:51,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:51,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:59:51,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:59:51,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:51,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125725538] [2025-03-17 13:59:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125725538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:51,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:59:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628557733] [2025-03-17 13:59:51,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:51,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:59:51,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:51,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:59:51,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:59:51,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:51,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:51,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:51,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:51,413 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2025-03-17 13:59:51,413 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2025-03-17 13:59:51,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3083 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2025-03-17 13:59:51,419 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2025-03-17 13:59:51,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2025-03-17 13:59:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 13:59:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 13:59:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-03-17 13:59:51,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-03-17 13:59:51,420 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2025-03-17 13:59:51,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2025-03-17 13:59:51,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:51,423 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2025-03-17 13:59:51,423 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-03-17 13:59:51,423 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-03-17 13:59:51,423 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2025-03-17 13:59:51,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:51,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:51,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 13:59:51,427 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:51,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1201091516, now seen corresponding path program 2 times [2025-03-17 13:59:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:51,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741532336] [2025-03-17 13:59:51,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:51,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-03-17 13:59:51,445 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 13:59:51,446 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:51,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:51,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:51,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741532336] [2025-03-17 13:59:51,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741532336] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:51,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 13:59:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880894918] [2025-03-17 13:59:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:51,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 13:59:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:51,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 13:59:51,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 13:59:51,538 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:51,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:51,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:51,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:51,707 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2025-03-17 13:59:51,707 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2025-03-17 13:59:51,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2599 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2025-03-17 13:59:51,710 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2025-03-17 13:59:51,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2025-03-17 13:59:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 13:59:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 13:59:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-03-17 13:59:51,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-03-17 13:59:51,711 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2025-03-17 13:59:51,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2025-03-17 13:59:51,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 13:59:51,718 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2025-03-17 13:59:51,718 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2025-03-17 13:59:51,719 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-17 13:59:51,719 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2025-03-17 13:59:51,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:51,720 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:51,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 13:59:51,720 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:51,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:51,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1701427140, now seen corresponding path program 1 times [2025-03-17 13:59:51,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:51,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795277686] [2025-03-17 13:59:51,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:51,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:59:51,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:59:51,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:51,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795277686] [2025-03-17 13:59:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795277686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:59:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319921626] [2025-03-17 13:59:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:51,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:59:51,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:51,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:59:51,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:59:51,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:51,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:51,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:51,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:51,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:52,034 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2025-03-17 13:59:52,035 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2025-03-17 13:59:52,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2606 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2025-03-17 13:59:52,040 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2025-03-17 13:59:52,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2025-03-17 13:59:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 13:59:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 13:59:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-03-17 13:59:52,042 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-03-17 13:59:52,043 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2025-03-17 13:59:52,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2025-03-17 13:59:52,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-03-17 13:59:52,048 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2025-03-17 13:59:52,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-03-17 13:59:52,049 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-03-17 13:59:52,049 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2025-03-17 13:59:52,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:52,049 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:52,050 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:52,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 13:59:52,050 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:52,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash 661783278, now seen corresponding path program 2 times [2025-03-17 13:59:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:52,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198234568] [2025-03-17 13:59:52,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:52,055 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-17 13:59:52,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 13:59:52,063 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:52,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:52,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:52,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198234568] [2025-03-17 13:59:52,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198234568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:52,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:52,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 13:59:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862640340] [2025-03-17 13:59:52,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:52,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 13:59:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:52,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 13:59:52,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 13:59:52,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:52,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:52,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:52,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:52,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:52,384 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2025-03-17 13:59:52,385 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2025-03-17 13:59:52,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3480 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2025-03-17 13:59:52,389 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2025-03-17 13:59:52,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2025-03-17 13:59:52,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 13:59:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-17 13:59:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2025-03-17 13:59:52,390 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2025-03-17 13:59:52,390 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2025-03-17 13:59:52,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2025-03-17 13:59:52,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-03-17 13:59:52,397 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2025-03-17 13:59:52,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2025-03-17 13:59:52,397 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2025-03-17 13:59:52,398 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2025-03-17 13:59:52,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:52,398 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:52,398 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:52,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 13:59:52,398 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:52,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:52,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1682381257, now seen corresponding path program 1 times [2025-03-17 13:59:52,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:52,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402610231] [2025-03-17 13:59:52,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:52,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:52,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:59:52,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:52,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:52,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:52,513 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 13:59:52,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402610231] [2025-03-17 13:59:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402610231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702093120] [2025-03-17 13:59:52,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:52,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:52,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 13:59:52,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 13:59:52,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:59:52,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:52,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:52,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:52,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:59:52,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:52,641 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 13:59:52,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:52,802 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 13:59:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702093120] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:52,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-17 13:59:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178810486] [2025-03-17 13:59:52,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 13:59:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:52,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 13:59:52,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-17 13:59:52,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:52,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:52,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:52,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:52,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:53,215 INFO L124 PetriNetUnfolderBase]: 571/1058 cut-off events. [2025-03-17 13:59:53,216 INFO L125 PetriNetUnfolderBase]: For 6872/6872 co-relation queries the response was YES. [2025-03-17 13:59:53,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1058 events. 571/1058 cut-off events. For 6872/6872 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4474 event pairs, 137 based on Foata normal form. 63/1117 useless extension candidates. Maximal degree in co-relation 4119. Up to 486 conditions per place. [2025-03-17 13:59:53,222 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 17 changer transitions 67/152 dead transitions. [2025-03-17 13:59:53,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1349 flow [2025-03-17 13:59:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-17 13:59:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-17 13:59:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 288 transitions. [2025-03-17 13:59:53,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5226860254083484 [2025-03-17 13:59:53,224 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 19 states and 288 transitions. [2025-03-17 13:59:53,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1349 flow [2025-03-17 13:59:53,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1270 flow, removed 32 selfloop flow, removed 5 redundant places. [2025-03-17 13:59:53,239 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 524 flow [2025-03-17 13:59:53,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=524, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2025-03-17 13:59:53,240 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2025-03-17 13:59:53,240 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 524 flow [2025-03-17 13:59:53,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:53,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:53,240 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:53,247 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 13:59:53,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:53,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:53,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash -865156721, now seen corresponding path program 2 times [2025-03-17 13:59:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:53,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771500311] [2025-03-17 13:59:53,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:53,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-17 13:59:53,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:53,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 13:59:53,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:53,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:53,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771500311] [2025-03-17 13:59:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771500311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:53,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 13:59:53,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 13:59:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366392888] [2025-03-17 13:59:53,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:53,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 13:59:53,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:53,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 13:59:53,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 13:59:53,540 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:53,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 52 transitions, 524 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:53,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:53,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:53,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:53,856 INFO L124 PetriNetUnfolderBase]: 652/1234 cut-off events. [2025-03-17 13:59:53,857 INFO L125 PetriNetUnfolderBase]: For 19130/19130 co-relation queries the response was YES. [2025-03-17 13:59:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 1234 events. 652/1234 cut-off events. For 19130/19130 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5849 event pairs, 132 based on Foata normal form. 27/1257 useless extension candidates. Maximal degree in co-relation 6040. Up to 483 conditions per place. [2025-03-17 13:59:53,866 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 23 changer transitions 31/134 dead transitions. [2025-03-17 13:59:53,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 1512 flow [2025-03-17 13:59:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-17 13:59:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-17 13:59:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-03-17 13:59:53,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-03-17 13:59:53,868 INFO L175 Difference]: Start difference. First operand has 90 places, 52 transitions, 524 flow. Second operand 15 states and 232 transitions. [2025-03-17 13:59:53,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 1512 flow [2025-03-17 13:59:53,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 1214 flow, removed 138 selfloop flow, removed 12 redundant places. [2025-03-17 13:59:53,888 INFO L231 Difference]: Finished difference. Result has 92 places, 58 transitions, 586 flow [2025-03-17 13:59:53,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=586, PETRI_PLACES=92, PETRI_TRANSITIONS=58} [2025-03-17 13:59:53,889 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2025-03-17 13:59:53,889 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 58 transitions, 586 flow [2025-03-17 13:59:53,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:53,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:53,889 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:53,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 13:59:53,889 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:53,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash -784450025, now seen corresponding path program 3 times [2025-03-17 13:59:53,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:53,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771426912] [2025-03-17 13:59:53,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 13:59:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:53,895 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 13:59:53,899 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:53,899 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 13:59:53,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:54,003 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 13:59:54,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:54,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771426912] [2025-03-17 13:59:54,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771426912] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:54,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364924415] [2025-03-17 13:59:54,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 13:59:54,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:54,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:54,007 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 13:59:54,009 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 13:59:54,041 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-17 13:59:54,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 13:59:54,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-17 13:59:54,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:54,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-17 13:59:54,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:54,101 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 13:59:54,101 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:54,186 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 13:59:54,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364924415] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:54,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:54,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-17 13:59:54,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460823529] [2025-03-17 13:59:54,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:54,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 13:59:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:54,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 13:59:54,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-17 13:59:54,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:54,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 58 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:54,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:54,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:54,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:54,712 INFO L124 PetriNetUnfolderBase]: 814/1497 cut-off events. [2025-03-17 13:59:54,712 INFO L125 PetriNetUnfolderBase]: For 23715/23715 co-relation queries the response was YES. [2025-03-17 13:59:54,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1497 events. 814/1497 cut-off events. For 23715/23715 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7038 event pairs, 72 based on Foata normal form. 81/1574 useless extension candidates. Maximal degree in co-relation 7523. Up to 237 conditions per place. [2025-03-17 13:59:54,723 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 78 selfloop transitions, 45 changer transitions 81/208 dead transitions. [2025-03-17 13:59:54,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 208 transitions, 2405 flow [2025-03-17 13:59:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-17 13:59:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-17 13:59:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 383 transitions. [2025-03-17 13:59:54,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5282758620689655 [2025-03-17 13:59:54,726 INFO L175 Difference]: Start difference. First operand has 92 places, 58 transitions, 586 flow. Second operand 25 states and 383 transitions. [2025-03-17 13:59:54,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 208 transitions, 2405 flow [2025-03-17 13:59:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 208 transitions, 2185 flow, removed 94 selfloop flow, removed 10 redundant places. [2025-03-17 13:59:54,750 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 913 flow [2025-03-17 13:59:54,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=913, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2025-03-17 13:59:54,751 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2025-03-17 13:59:54,751 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 913 flow [2025-03-17 13:59:54,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.153846153846153) internal successors, (132), 13 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:54,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:54,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:54,757 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 13:59:54,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-17 13:59:54,955 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:54,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1898943873, now seen corresponding path program 1 times [2025-03-17 13:59:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140560322] [2025-03-17 13:59:54,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:54,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 13:59:54,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:54,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:54,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:55,057 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 13:59:55,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140560322] [2025-03-17 13:59:55,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140560322] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:55,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280318586] [2025-03-17 13:59:55,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 13:59:55,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:55,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:55,059 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 13:59:55,061 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 13:59:55,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-17 13:59:55,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:55,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 13:59:55,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:55,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:59:55,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:55,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 13:59:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280318586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 13:59:55,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 13:59:55,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2025-03-17 13:59:55,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301173384] [2025-03-17 13:59:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 13:59:55,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 13:59:55,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:55,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 13:59:55,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-17 13:59:55,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:55,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 913 flow. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:55,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:55,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:55,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:55,446 INFO L124 PetriNetUnfolderBase]: 760/1439 cut-off events. [2025-03-17 13:59:55,446 INFO L125 PetriNetUnfolderBase]: For 38753/38753 co-relation queries the response was YES. [2025-03-17 13:59:55,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 1439 events. 760/1439 cut-off events. For 38753/38753 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7108 event pairs, 204 based on Foata normal form. 27/1462 useless extension candidates. Maximal degree in co-relation 8096. Up to 724 conditions per place. [2025-03-17 13:59:55,456 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 75 selfloop transitions, 26 changer transitions 37/142 dead transitions. [2025-03-17 13:59:55,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 142 transitions, 1951 flow [2025-03-17 13:59:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 13:59:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 13:59:55,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2025-03-17 13:59:55,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246305418719212 [2025-03-17 13:59:55,458 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 913 flow. Second operand 14 states and 213 transitions. [2025-03-17 13:59:55,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 142 transitions, 1951 flow [2025-03-17 13:59:55,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 142 transitions, 1632 flow, removed 138 selfloop flow, removed 17 redundant places. [2025-03-17 13:59:55,513 INFO L231 Difference]: Finished difference. Result has 113 places, 74 transitions, 840 flow [2025-03-17 13:59:55,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=840, PETRI_PLACES=113, PETRI_TRANSITIONS=74} [2025-03-17 13:59:55,514 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2025-03-17 13:59:55,514 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 74 transitions, 840 flow [2025-03-17 13:59:55,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:55,514 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:55,514 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:55,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 13:59:55,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:55,715 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:55,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash -659816597, now seen corresponding path program 2 times [2025-03-17 13:59:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:55,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885840128] [2025-03-17 13:59:55,716 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:55,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:55,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-17 13:59:55,722 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:55,723 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:59:55,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:55,799 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 13:59:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885840128] [2025-03-17 13:59:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885840128] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889485659] [2025-03-17 13:59:55,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 13:59:55,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:55,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:55,801 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 13:59:55,803 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 13:59:55,829 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-17 13:59:55,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-17 13:59:55,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 13:59:55,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:55,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 13:59:55,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:55,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:55,969 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 13:59:55,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889485659] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:55,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:55,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-03-17 13:59:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175380252] [2025-03-17 13:59:55,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:55,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-17 13:59:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:55,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-17 13:59:55,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-17 13:59:55,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:55,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 74 transitions, 840 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:55,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:55,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:55,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:56,657 INFO L124 PetriNetUnfolderBase]: 1381/2554 cut-off events. [2025-03-17 13:59:56,657 INFO L125 PetriNetUnfolderBase]: For 78096/78096 co-relation queries the response was YES. [2025-03-17 13:59:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15484 conditions, 2554 events. 1381/2554 cut-off events. For 78096/78096 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13060 event pairs, 65 based on Foata normal form. 81/2629 useless extension candidates. Maximal degree in co-relation 15434. Up to 483 conditions per place. [2025-03-17 13:59:56,677 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 103 selfloop transitions, 81 changer transitions 93/281 dead transitions. [2025-03-17 13:59:56,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 281 transitions, 4121 flow [2025-03-17 13:59:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-03-17 13:59:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-03-17 13:59:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 477 transitions. [2025-03-17 13:59:56,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5305895439377085 [2025-03-17 13:59:56,679 INFO L175 Difference]: Start difference. First operand has 113 places, 74 transitions, 840 flow. Second operand 31 states and 477 transitions. [2025-03-17 13:59:56,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 281 transitions, 4121 flow [2025-03-17 13:59:56,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 281 transitions, 3380 flow, removed 352 selfloop flow, removed 10 redundant places. [2025-03-17 13:59:56,754 INFO L231 Difference]: Finished difference. Result has 153 places, 107 transitions, 1684 flow [2025-03-17 13:59:56,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1684, PETRI_PLACES=153, PETRI_TRANSITIONS=107} [2025-03-17 13:59:56,755 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2025-03-17 13:59:56,755 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 107 transitions, 1684 flow [2025-03-17 13:59:56,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:56,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:56,755 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:56,761 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 13:59:56,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:56,956 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:56,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:56,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1831251807, now seen corresponding path program 3 times [2025-03-17 13:59:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:56,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060401938] [2025-03-17 13:59:56,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 13:59:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:56,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-03-17 13:59:56,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 13:59:56,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 13:59:56,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:57,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060401938] [2025-03-17 13:59:57,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060401938] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:57,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169833699] [2025-03-17 13:59:57,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 13:59:57,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:57,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:57,101 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 13:59:57,102 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 13:59:57,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-03-17 13:59:57,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 13:59:57,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-03-17 13:59:57,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:57,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-17 13:59:57,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:57,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169833699] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:57,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:57,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2025-03-17 13:59:57,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599053939] [2025-03-17 13:59:57,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:57,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 13:59:57,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:57,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 13:59:57,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-03-17 13:59:57,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:57,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 107 transitions, 1684 flow. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:57,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:57,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:57,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:58,190 INFO L124 PetriNetUnfolderBase]: 1336/2488 cut-off events. [2025-03-17 13:59:58,190 INFO L125 PetriNetUnfolderBase]: For 121720/121720 co-relation queries the response was YES. [2025-03-17 13:59:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17031 conditions, 2488 events. 1336/2488 cut-off events. For 121720/121720 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12519 event pairs, 38 based on Foata normal form. 63/2547 useless extension candidates. Maximal degree in co-relation 16962. Up to 477 conditions per place. [2025-03-17 13:59:58,210 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 104 selfloop transitions, 88 changer transitions 81/277 dead transitions. [2025-03-17 13:59:58,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 277 transitions, 4634 flow [2025-03-17 13:59:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-17 13:59:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-17 13:59:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 457 transitions. [2025-03-17 13:59:58,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5252873563218391 [2025-03-17 13:59:58,212 INFO L175 Difference]: Start difference. First operand has 153 places, 107 transitions, 1684 flow. Second operand 30 states and 457 transitions. [2025-03-17 13:59:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 277 transitions, 4634 flow [2025-03-17 13:59:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 3844 flow, removed 368 selfloop flow, removed 16 redundant places. [2025-03-17 13:59:58,330 INFO L231 Difference]: Finished difference. Result has 168 places, 114 transitions, 1710 flow [2025-03-17 13:59:58,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1710, PETRI_PLACES=168, PETRI_TRANSITIONS=114} [2025-03-17 13:59:58,330 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2025-03-17 13:59:58,330 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 114 transitions, 1710 flow [2025-03-17 13:59:58,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:58,331 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:58,338 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 13:59:58,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-17 13:59:58,531 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 13:59:58,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 13:59:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash -781532556, now seen corresponding path program 4 times [2025-03-17 13:59:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 13:59:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613925498] [2025-03-17 13:59:58,532 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 13:59:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 13:59:58,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-17 13:59:58,541 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 13:59:58,542 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 13:59:58,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 13:59:58,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613925498] [2025-03-17 13:59:58,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613925498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 13:59:58,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350197010] [2025-03-17 13:59:58,695 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 13:59:58,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 13:59:58,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 13:59:58,697 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 13:59:58,699 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 13:59:58,731 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 40 statements into 2 equivalence classes. [2025-03-17 13:59:58,742 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 13:59:58,742 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 13:59:58,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 13:59:58,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 13:59:58,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 13:59:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 13:59:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 13:59:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350197010] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 13:59:58,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 13:59:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-03-17 13:59:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147393130] [2025-03-17 13:59:58,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 13:59:58,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-17 13:59:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 13:59:58,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-17 13:59:58,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2025-03-17 13:59:58,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 13:59:58,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 114 transitions, 1710 flow. Second operand has 28 states, 28 states have (on average 10.035714285714286) internal successors, (281), 28 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:58,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 13:59:58,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 13:59:58,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 13:59:59,810 INFO L124 PetriNetUnfolderBase]: 1642/3019 cut-off events. [2025-03-17 13:59:59,810 INFO L125 PetriNetUnfolderBase]: For 148869/148869 co-relation queries the response was YES. [2025-03-17 13:59:59,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20569 conditions, 3019 events. 1642/3019 cut-off events. For 148869/148869 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15307 event pairs, 92 based on Foata normal form. 36/3051 useless extension candidates. Maximal degree in co-relation 20498. Up to 585 conditions per place. [2025-03-17 13:59:59,832 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 120 selfloop transitions, 110 changer transitions 77/311 dead transitions. [2025-03-17 13:59:59,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 311 transitions, 5240 flow [2025-03-17 13:59:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-17 13:59:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-17 13:59:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 487 transitions. [2025-03-17 13:59:59,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5247844827586207 [2025-03-17 13:59:59,834 INFO L175 Difference]: Start difference. First operand has 168 places, 114 transitions, 1710 flow. Second operand 32 states and 487 transitions. [2025-03-17 13:59:59,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 311 transitions, 5240 flow [2025-03-17 13:59:59,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 311 transitions, 4435 flow, removed 322 selfloop flow, removed 25 redundant places. [2025-03-17 13:59:59,970 INFO L231 Difference]: Finished difference. Result has 181 places, 140 transitions, 2166 flow [2025-03-17 13:59:59,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2166, PETRI_PLACES=181, PETRI_TRANSITIONS=140} [2025-03-17 13:59:59,971 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2025-03-17 13:59:59,971 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 140 transitions, 2166 flow [2025-03-17 13:59:59,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.035714285714286) internal successors, (281), 28 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 13:59:59,971 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 13:59:59,971 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 13:59:59,977 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 14:00:00,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 14:00:00,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-17 14:00:00,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:00:00,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1000236700, now seen corresponding path program 5 times [2025-03-17 14:00:00,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:00:00,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219147881] [2025-03-17 14:00:00,177 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:00:00,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:00:00,181 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 6 equivalence classes. [2025-03-17 14:00:00,187 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 43 of 43 statements. [2025-03-17 14:00:00,187 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-03-17 14:00:00,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:00:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-17 14:00:00,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:00:00,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219147881] [2025-03-17 14:00:00,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219147881] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:00:00,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:00:00,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 14:00:00,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673758585] [2025-03-17 14:00:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:00:00,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 14:00:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:00:00,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 14:00:00,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-03-17 14:00:00,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-03-17 14:00:00,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 140 transitions, 2166 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:00,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:00:00,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-03-17 14:00:00,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:00:01,151 INFO L124 PetriNetUnfolderBase]: 4461/7527 cut-off events. [2025-03-17 14:00:01,151 INFO L125 PetriNetUnfolderBase]: For 295989/295989 co-relation queries the response was YES. [2025-03-17 14:00:01,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42851 conditions, 7527 events. 4461/7527 cut-off events. For 295989/295989 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 45879 event pairs, 174 based on Foata normal form. 0/6887 useless extension candidates. Maximal degree in co-relation 42779. Up to 1971 conditions per place. [2025-03-17 14:00:01,190 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 516/516 dead transitions. [2025-03-17 14:00:01,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 516 transitions, 8303 flow [2025-03-17 14:00:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 14:00:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 14:00:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2025-03-17 14:00:01,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-17 14:00:01,193 INFO L175 Difference]: Start difference. First operand has 181 places, 140 transitions, 2166 flow. Second operand 8 states and 145 transitions. [2025-03-17 14:00:01,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 516 transitions, 8303 flow [2025-03-17 14:00:01,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 516 transitions, 7201 flow, removed 354 selfloop flow, removed 22 redundant places. [2025-03-17 14:00:01,491 INFO L231 Difference]: Finished difference. Result has 158 places, 0 transitions, 0 flow [2025-03-17 14:00:01,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=158, PETRI_TRANSITIONS=0} [2025-03-17 14:00:01,493 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2025-03-17 14:00:01,493 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 0 transitions, 0 flow [2025-03-17 14:00:01,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 14:00:01,495 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 4 remaining) [2025-03-17 14:00:01,496 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-03-17 14:00:01,496 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-03-17 14:00:01,496 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-03-17 14:00:01,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 14:00:01,496 INFO L422 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 1, 1] [2025-03-17 14:00:01,498 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 14:00:01,498 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 14:00:01,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 02:00:01 BasicIcfg [2025-03-17 14:00:01,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 14:00:01,504 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 14:00:01,505 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 14:00:01,505 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 14:00:01,505 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 01:59:50" (3/4) ... [2025-03-17 14:00:01,507 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 14:00:01,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t1 [2025-03-17 14:00:01,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t2 [2025-03-17 14:00:01,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2025-03-17 14:00:01,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-17 14:00:01,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-17 14:00:01,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 14:00:01,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 14:00:01,572 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 14:00:01,573 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 14:00:01,573 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 14:00:01,574 INFO L158 Benchmark]: Toolchain (without parser) took 11954.19ms. Allocated memory was 142.6MB in the beginning and 595.6MB in the end (delta: 453.0MB). Free memory was 105.6MB in the beginning and 315.8MB in the end (delta: -210.3MB). Peak memory consumption was 243.0MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,574 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:00:01,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.71ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 87.2MB in the end (delta: 18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.93ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 84.8MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,576 INFO L158 Benchmark]: Boogie Preprocessor took 19.21ms. Allocated memory is still 142.6MB. Free memory was 84.8MB in the beginning and 83.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 14:00:01,576 INFO L158 Benchmark]: IcfgBuilder took 321.78ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 65.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,577 INFO L158 Benchmark]: TraceAbstraction took 11204.35ms. Allocated memory was 142.6MB in the beginning and 595.6MB in the end (delta: 453.0MB). Free memory was 64.4MB in the beginning and 321.6MB in the end (delta: -257.1MB). Peak memory consumption was 293.3MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,577 INFO L158 Benchmark]: Witness Printer took 68.52ms. Allocated memory is still 595.6MB. Free memory was 321.6MB in the beginning and 315.8MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 14:00:01,578 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.71ms. Allocated memory is still 142.6MB. Free memory was 105.6MB in the beginning and 87.2MB in the end (delta: 18.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.93ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 84.8MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.21ms. Allocated memory is still 142.6MB. Free memory was 84.8MB in the beginning and 83.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 321.78ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 65.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11204.35ms. Allocated memory was 142.6MB in the beginning and 595.6MB in the end (delta: 453.0MB). Free memory was 64.4MB in the beginning and 321.6MB in the end (delta: -257.1MB). Peak memory consumption was 293.3MB. Max. memory is 16.1GB. * Witness Printer took 68.52ms. Allocated memory is still 595.6MB. Free memory was 321.6MB in the beginning and 315.8MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 locations, 41 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.1s, OverallIterations: 14, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2018 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2015 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3423 IncrementalHoareTripleChecker+Invalid, 3547 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 1 mSDtfsCounter, 3423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 528 GetRequests, 252 SyntacticMatches, 6 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2052 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2166occurred in iteration=13, InterpolantAutomatonStates: 222, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 561 ConstructedInterpolants, 0 QuantifiedInterpolants, 2002 SizeOfPredicates, 38 NumberOfNonLiveVariables, 616 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 25 InterpolantComputations, 9 PerfectInterpolantSequences, 48/244 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 14:00:01,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE