./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:23:58,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:23:58,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:23:58,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:23:58,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:23:58,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:23:58,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:23:58,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:23:58,916 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:23:58,916 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:23:58,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:23:58,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:23:58,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:23:58,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:23:58,916 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:23:58,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:23:58,917 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:23:58,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:23:58,919 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:23:58,919 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:23:58,919 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:23:58,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:23:58,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:23:58,920 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:23:58,920 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 -> 6b30bad195dde021066febd52c7985271e0448c265b66e6efcbd9c3306420e73 [2025-03-09 01:23:59,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:23:59,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:23:59,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:23:59,113 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:23:59,113 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:23:59,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2025-03-09 01:24:00,179 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e8c89d3/12110415112642159bfb386fb69a4233/FLAG61ae9a5df [2025-03-09 01:24:00,415 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:24:00,416 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-threaded-sum-2.wvr.c [2025-03-09 01:24:00,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e8c89d3/12110415112642159bfb386fb69a4233/FLAG61ae9a5df [2025-03-09 01:24:00,761 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e8c89d3/12110415112642159bfb386fb69a4233 [2025-03-09 01:24:00,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:24:00,764 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:24:00,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:24:00,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:24:00,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:24:00,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e42eceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00, skipping insertion in model container [2025-03-09 01:24:00,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:24:00,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:24:00,906 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:24:00,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:24:00,936 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:24:00,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00 WrapperNode [2025-03-09 01:24:00,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:24:00,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:24:00,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:24:00,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:24:00,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,958 INFO L138 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2025-03-09 01:24:00,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:24:00,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:24:00,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:24:00,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:24:00,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,978 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 01:24:00,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,983 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,992 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:24:00,993 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:24:00,993 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:24:00,993 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:24:00,993 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (1/1) ... [2025-03-09 01:24:00,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:24:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:01,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 01:24:01,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:24:01,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:24:01,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 01:24:01,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 01:24:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:24:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:24:01,040 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:24:01,100 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:24:01,101 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:24:01,236 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:24:01,236 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:24:01,314 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:24:01,315 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:24:01,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:24:01 BoogieIcfgContainer [2025-03-09 01:24:01,315 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:24:01,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:24:01,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:24:01,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:24:01,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:24:00" (1/3) ... [2025-03-09 01:24:01,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b81ba76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:24:01, skipping insertion in model container [2025-03-09 01:24:01,322 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:24:00" (2/3) ... [2025-03-09 01:24:01,322 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b81ba76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:24:01, skipping insertion in model container [2025-03-09 01:24:01,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:24:01" (3/3) ... [2025-03-09 01:24:01,324 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2025-03-09 01:24:01,336 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:24:01,337 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-threaded-sum-2.wvr.c that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-03-09 01:24:01,337 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:24:01,382 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 01:24:01,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2025-03-09 01:24:01,425 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2025-03-09 01:24:01,427 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:24:01,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-03-09 01:24:01,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2025-03-09 01:24:01,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 60 flow [2025-03-09 01:24:01,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:24:01,446 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;@7cd8fb2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:24:01,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-09 01:24:01,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:24:01,453 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-03-09 01:24:01,453 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 01:24:01,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:01,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:01,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:01,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 428630572, now seen corresponding path program 1 times [2025-03-09 01:24:01,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:01,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628400280] [2025-03-09 01:24:01,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:01,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 01:24:01,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 01:24:01,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:01,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:01,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628400280] [2025-03-09 01:24:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628400280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:01,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:01,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:24:01,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856482764] [2025-03-09 01:24:01,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:01,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:24:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:01,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:24:01,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:24:01,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 01:24:01,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:01,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:01,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 01:24:01,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:01,977 INFO L124 PetriNetUnfolderBase]: 120/234 cut-off events. [2025-03-09 01:24:01,977 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-09 01:24:01,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 234 events. 120/234 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 867 event pairs, 9 based on Foata normal form. 17/249 useless extension candidates. Maximal degree in co-relation 425. Up to 134 conditions per place. [2025-03-09 01:24:01,981 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2025-03-09 01:24:01,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 195 flow [2025-03-09 01:24:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:24:01,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:24:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2025-03-09 01:24:01,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2025-03-09 01:24:01,992 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 5 states and 84 transitions. [2025-03-09 01:24:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 195 flow [2025-03-09 01:24:01,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 46 transitions, 181 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:01,998 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 93 flow [2025-03-09 01:24:01,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2025-03-09 01:24:02,002 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2025-03-09 01:24:02,002 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 93 flow [2025-03-09 01:24:02,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:02,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:02,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:24:02,003 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1733383060, now seen corresponding path program 1 times [2025-03-09 01:24:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449805010] [2025-03-09 01:24:02,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:02,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:24:02,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:24:02,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:02,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:24:02,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449805010] [2025-03-09 01:24:02,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449805010] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:02,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:02,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:24:02,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169976112] [2025-03-09 01:24:02,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:02,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:24:02,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:02,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:24:02,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:24:02,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 01:24:02,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:02,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 01:24:02,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:02,264 INFO L124 PetriNetUnfolderBase]: 146/290 cut-off events. [2025-03-09 01:24:02,264 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2025-03-09 01:24:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 290 events. 146/290 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1176 event pairs, 15 based on Foata normal form. 13/299 useless extension candidates. Maximal degree in co-relation 251. Up to 144 conditions per place. [2025-03-09 01:24:02,269 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-03-09 01:24:02,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 243 flow [2025-03-09 01:24:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:24:02,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:24:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-03-09 01:24:02,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2025-03-09 01:24:02,270 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 93 flow. Second operand 4 states and 64 transitions. [2025-03-09 01:24:02,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 243 flow [2025-03-09 01:24:02,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:24:02,272 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 104 flow [2025-03-09 01:24:02,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2025-03-09 01:24:02,272 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-03-09 01:24:02,272 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 104 flow [2025-03-09 01:24:02,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:02,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:02,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:24:02,273 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:02,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 921824657, now seen corresponding path program 1 times [2025-03-09 01:24:02,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121031722] [2025-03-09 01:24:02,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:02,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:24:02,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:24:02,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:02,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121031722] [2025-03-09 01:24:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121031722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:02,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:02,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:24:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692844629] [2025-03-09 01:24:02,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:02,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:24:02,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:02,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:24:02,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:24:02,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 01:24:02,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 01:24:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:02,491 INFO L124 PetriNetUnfolderBase]: 156/301 cut-off events. [2025-03-09 01:24:02,491 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-03-09 01:24:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 301 events. 156/301 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1198 event pairs, 23 based on Foata normal form. 16/315 useless extension candidates. Maximal degree in co-relation 364. Up to 109 conditions per place. [2025-03-09 01:24:02,493 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 34 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2025-03-09 01:24:02,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 253 flow [2025-03-09 01:24:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:24:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:24:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-03-09 01:24:02,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2025-03-09 01:24:02,494 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 104 flow. Second operand 5 states and 78 transitions. [2025-03-09 01:24:02,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 253 flow [2025-03-09 01:24:02,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:24:02,496 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 150 flow [2025-03-09 01:24:02,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-03-09 01:24:02,497 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-03-09 01:24:02,497 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 150 flow [2025-03-09 01:24:02,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:02,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:02,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:24:02,498 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:02,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2135320083, now seen corresponding path program 2 times [2025-03-09 01:24:02,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:02,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268432167] [2025-03-09 01:24:02,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:02,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:02,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:24:02,519 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:24:02,520 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:24:02,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268432167] [2025-03-09 01:24:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268432167] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766615212] [2025-03-09 01:24:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 01:24:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:02,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 01:24:02,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:24:02,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 01:24:02,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:02,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:02,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 01:24:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:03,187 INFO L124 PetriNetUnfolderBase]: 241/457 cut-off events. [2025-03-09 01:24:03,188 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2025-03-09 01:24:03,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 457 events. 241/457 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1922 event pairs, 14 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 557. Up to 262 conditions per place. [2025-03-09 01:24:03,192 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 41 selfloop transitions, 14 changer transitions 9/69 dead transitions. [2025-03-09 01:24:03,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 69 transitions, 420 flow [2025-03-09 01:24:03,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 01:24:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 01:24:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2025-03-09 01:24:03,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-03-09 01:24:03,194 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 150 flow. Second operand 10 states and 141 transitions. [2025-03-09 01:24:03,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 69 transitions, 420 flow [2025-03-09 01:24:03,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:24:03,199 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 241 flow [2025-03-09 01:24:03,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=241, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-03-09 01:24:03,200 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2025-03-09 01:24:03,200 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 241 flow [2025-03-09 01:24:03,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:03,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:03,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:03,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:24:03,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:03,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash -430790379, now seen corresponding path program 1 times [2025-03-09 01:24:03,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:03,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125408356] [2025-03-09 01:24:03,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:03,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:03,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:24:03,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:24:03,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:03,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:03,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125408356] [2025-03-09 01:24:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125408356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619596523] [2025-03-09 01:24:03,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:24:03,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:03,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:03,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:24:03,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 01:24:03,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:24:03,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:24:03,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:24:03,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:03,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:24:03,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:03,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:03,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:03,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619596523] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:03,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:03,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 12 [2025-03-09 01:24:03,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528474541] [2025-03-09 01:24:03,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:03,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:24:03,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:03,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:24:03,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:24:03,642 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 01:24:03,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:03,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:03,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 01:24:03,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:04,339 INFO L124 PetriNetUnfolderBase]: 1054/1780 cut-off events. [2025-03-09 01:24:04,340 INFO L125 PetriNetUnfolderBase]: For 3276/3276 co-relation queries the response was YES. [2025-03-09 01:24:04,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5813 conditions, 1780 events. 1054/1780 cut-off events. For 3276/3276 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8609 event pairs, 47 based on Foata normal form. 22/1801 useless extension candidates. Maximal degree in co-relation 5786. Up to 380 conditions per place. [2025-03-09 01:24:04,353 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 149 selfloop transitions, 89 changer transitions 0/241 dead transitions. [2025-03-09 01:24:04,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 241 transitions, 1699 flow [2025-03-09 01:24:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-09 01:24:04,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-09 01:24:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 380 transitions. [2025-03-09 01:24:04,357 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-03-09 01:24:04,357 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 241 flow. Second operand 30 states and 380 transitions. [2025-03-09 01:24:04,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 241 transitions, 1699 flow [2025-03-09 01:24:04,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 241 transitions, 1643 flow, removed 21 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:04,370 INFO L231 Difference]: Finished difference. Result has 93 places, 126 transitions, 1088 flow [2025-03-09 01:24:04,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1088, PETRI_PLACES=93, PETRI_TRANSITIONS=126} [2025-03-09 01:24:04,371 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2025-03-09 01:24:04,371 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 126 transitions, 1088 flow [2025-03-09 01:24:04,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:04,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:04,372 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:04,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 01:24:04,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:04,578 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:04,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1790389053, now seen corresponding path program 2 times [2025-03-09 01:24:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:04,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69234117] [2025-03-09 01:24:04,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:04,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:04,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:24:04,606 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:24:04,609 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:04,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69234117] [2025-03-09 01:24:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69234117] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14387534] [2025-03-09 01:24:05,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:24:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:05,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:24:05,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 01:24:05,177 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:24:05,197 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:24:05,197 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:24:05,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:05,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-09 01:24:05,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:05,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14387534] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:06,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:06,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2025-03-09 01:24:06,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054448316] [2025-03-09 01:24:06,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:06,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 01:24:06,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:06,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 01:24:06,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2025-03-09 01:24:06,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-09 01:24:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 126 transitions, 1088 flow. Second operand has 22 states, 22 states have (on average 9.454545454545455) internal successors, (208), 22 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-09 01:24:06,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:09,673 INFO L124 PetriNetUnfolderBase]: 1926/3543 cut-off events. [2025-03-09 01:24:09,674 INFO L125 PetriNetUnfolderBase]: For 25298/25298 co-relation queries the response was YES. [2025-03-09 01:24:09,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 3543 events. 1926/3543 cut-off events. For 25298/25298 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 22317 event pairs, 21 based on Foata normal form. 15/3556 useless extension candidates. Maximal degree in co-relation 13395. Up to 923 conditions per place. [2025-03-09 01:24:09,696 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 271 selfloop transitions, 178 changer transitions 103/556 dead transitions. [2025-03-09 01:24:09,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 556 transitions, 5737 flow [2025-03-09 01:24:09,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-09 01:24:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-03-09 01:24:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 619 transitions. [2025-03-09 01:24:09,700 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49838969404186795 [2025-03-09 01:24:09,700 INFO L175 Difference]: Start difference. First operand has 93 places, 126 transitions, 1088 flow. Second operand 46 states and 619 transitions. [2025-03-09 01:24:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 556 transitions, 5737 flow [2025-03-09 01:24:09,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 556 transitions, 5071 flow, removed 325 selfloop flow, removed 4 redundant places. [2025-03-09 01:24:09,751 INFO L231 Difference]: Finished difference. Result has 157 places, 273 transitions, 2737 flow [2025-03-09 01:24:09,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2737, PETRI_PLACES=157, PETRI_TRANSITIONS=273} [2025-03-09 01:24:09,752 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2025-03-09 01:24:09,752 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 273 transitions, 2737 flow [2025-03-09 01:24:09,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.454545454545455) internal successors, (208), 22 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:09,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:09,753 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:09,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 01:24:09,957 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,SelfDestructingSolverStorable5 [2025-03-09 01:24:09,957 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:09,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1216854636, now seen corresponding path program 3 times [2025-03-09 01:24:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610548210] [2025-03-09 01:24:09,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:09,962 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-03-09 01:24:09,969 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 23 statements. [2025-03-09 01:24:09,969 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:24:09,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-09 01:24:10,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:10,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610548210] [2025-03-09 01:24:10,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610548210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:10,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:10,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460894610] [2025-03-09 01:24:10,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:10,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:24:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:10,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:24:10,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:24:10,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-03-09 01:24:10,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 273 transitions, 2737 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:10,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:10,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-03-09 01:24:10,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:10,641 INFO L124 PetriNetUnfolderBase]: 1991/3798 cut-off events. [2025-03-09 01:24:10,641 INFO L125 PetriNetUnfolderBase]: For 29514/29697 co-relation queries the response was YES. [2025-03-09 01:24:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19526 conditions, 3798 events. 1991/3798 cut-off events. For 29514/29697 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 25814 event pairs, 255 based on Foata normal form. 58/3785 useless extension candidates. Maximal degree in co-relation 19275. Up to 1051 conditions per place. [2025-03-09 01:24:10,678 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 284 selfloop transitions, 175 changer transitions 0/484 dead transitions. [2025-03-09 01:24:10,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 484 transitions, 5777 flow [2025-03-09 01:24:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 01:24:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 01:24:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2025-03-09 01:24:10,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2025-03-09 01:24:10,679 INFO L175 Difference]: Start difference. First operand has 157 places, 273 transitions, 2737 flow. Second operand 7 states and 114 transitions. [2025-03-09 01:24:10,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 484 transitions, 5777 flow [2025-03-09 01:24:10,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 484 transitions, 5331 flow, removed 199 selfloop flow, removed 19 redundant places. [2025-03-09 01:24:10,752 INFO L231 Difference]: Finished difference. Result has 134 places, 378 transitions, 4229 flow [2025-03-09 01:24:10,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4229, PETRI_PLACES=134, PETRI_TRANSITIONS=378} [2025-03-09 01:24:10,753 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2025-03-09 01:24:10,753 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 378 transitions, 4229 flow [2025-03-09 01:24:10,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:10,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:10,753 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:10,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:24:10,754 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:10,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 965931024, now seen corresponding path program 4 times [2025-03-09 01:24:10,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:10,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746503536] [2025-03-09 01:24:10,754 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:10,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:10,759 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-03-09 01:24:10,765 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-03-09 01:24:10,766 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:10,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746503536] [2025-03-09 01:24:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746503536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:24:10,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:24:10,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-09 01:24:10,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176043827] [2025-03-09 01:24:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:24:10,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 01:24:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:10,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 01:24:10,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 01:24:10,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-09 01:24:10,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 378 transitions, 4229 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:10,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:10,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-09 01:24:10,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:11,617 INFO L124 PetriNetUnfolderBase]: 3008/5316 cut-off events. [2025-03-09 01:24:11,618 INFO L125 PetriNetUnfolderBase]: For 46548/46808 co-relation queries the response was YES. [2025-03-09 01:24:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28920 conditions, 5316 events. 3008/5316 cut-off events. For 46548/46808 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 34344 event pairs, 54 based on Foata normal form. 148/5433 useless extension candidates. Maximal degree in co-relation 26418. Up to 1377 conditions per place. [2025-03-09 01:24:11,665 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 473 selfloop transitions, 232 changer transitions 0/729 dead transitions. [2025-03-09 01:24:11,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 729 transitions, 9407 flow [2025-03-09 01:24:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:24:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:24:11,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2025-03-09 01:24:11,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2025-03-09 01:24:11,672 INFO L175 Difference]: Start difference. First operand has 134 places, 378 transitions, 4229 flow. Second operand 9 states and 120 transitions. [2025-03-09 01:24:11,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 729 transitions, 9407 flow [2025-03-09 01:24:11,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 729 transitions, 9323 flow, removed 42 selfloop flow, removed 0 redundant places. [2025-03-09 01:24:11,838 INFO L231 Difference]: Finished difference. Result has 145 places, 504 transitions, 6897 flow [2025-03-09 01:24:11,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6897, PETRI_PLACES=145, PETRI_TRANSITIONS=504} [2025-03-09 01:24:11,839 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2025-03-09 01:24:11,839 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 504 transitions, 6897 flow [2025-03-09 01:24:11,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:11,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:11,840 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:11,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 01:24:11,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:11,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:11,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1911763935, now seen corresponding path program 3 times [2025-03-09 01:24:11,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:11,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823142964] [2025-03-09 01:24:11,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:11,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:11,846 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-03-09 01:24:11,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:24:11,866 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:11,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823142964] [2025-03-09 01:24:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823142964] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007748185] [2025-03-09 01:24:12,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:24:12,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:12,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:24:12,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 01:24:12,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 2 equivalence classes. [2025-03-09 01:24:12,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:24:12,429 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:24:12,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:12,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 01:24:12,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:12,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:13,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007748185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:13,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:13,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2025-03-09 01:24:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982601146] [2025-03-09 01:24:13,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:13,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-09 01:24:13,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:13,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-09 01:24:13,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2025-03-09 01:24:13,548 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 01:24:13,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 504 transitions, 6897 flow. Second operand has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:13,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:13,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 01:24:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:21,355 INFO L124 PetriNetUnfolderBase]: 6052/10317 cut-off events. [2025-03-09 01:24:21,356 INFO L125 PetriNetUnfolderBase]: For 114572/114572 co-relation queries the response was YES. [2025-03-09 01:24:21,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 10317 events. 6052/10317 cut-off events. For 114572/114572 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 70188 event pairs, 131 based on Foata normal form. 14/10330 useless extension candidates. Maximal degree in co-relation 56831. Up to 3562 conditions per place. [2025-03-09 01:24:21,425 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 782 selfloop transitions, 530 changer transitions 81/1396 dead transitions. [2025-03-09 01:24:21,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 1396 transitions, 19912 flow [2025-03-09 01:24:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-09 01:24:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2025-03-09 01:24:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 745 transitions. [2025-03-09 01:24:21,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44504181600955794 [2025-03-09 01:24:21,428 INFO L175 Difference]: Start difference. First operand has 145 places, 504 transitions, 6897 flow. Second operand 62 states and 745 transitions. [2025-03-09 01:24:21,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 1396 transitions, 19912 flow [2025-03-09 01:24:21,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1396 transitions, 19832 flow, removed 37 selfloop flow, removed 2 redundant places. [2025-03-09 01:24:21,792 INFO L231 Difference]: Finished difference. Result has 246 places, 927 transitions, 14206 flow [2025-03-09 01:24:21,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=14206, PETRI_PLACES=246, PETRI_TRANSITIONS=927} [2025-03-09 01:24:21,793 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2025-03-09 01:24:21,794 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 927 transitions, 14206 flow [2025-03-09 01:24:21,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.64) internal successors, (216), 25 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:21,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:21,794 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:21,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 01:24:21,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:21,995 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:21,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash 385040969, now seen corresponding path program 4 times [2025-03-09 01:24:21,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:21,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848746356] [2025-03-09 01:24:21,995 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:21,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:21,999 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-09 01:24:22,010 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:24:22,010 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:22,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:22,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:22,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848746356] [2025-03-09 01:24:22,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848746356] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:22,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116705565] [2025-03-09 01:24:22,813 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:24:22,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:22,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:22,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:24:22,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 01:24:22,842 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-03-09 01:24:22,927 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-03-09 01:24:22,927 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:24:22,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:22,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-09 01:24:22,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:23,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116705565] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:36,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2025-03-09 01:24:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971488786] [2025-03-09 01:24:36,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:36,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 01:24:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:36,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 01:24:36,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=433, Unknown=2, NotChecked=0, Total=552 [2025-03-09 01:24:36,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-09 01:24:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 927 transitions, 14206 flow. Second operand has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 24 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:36,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-09 01:24:36,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:24:43,863 INFO L124 PetriNetUnfolderBase]: 6240/11114 cut-off events. [2025-03-09 01:24:43,863 INFO L125 PetriNetUnfolderBase]: For 188615/188663 co-relation queries the response was YES. [2025-03-09 01:24:43,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81024 conditions, 11114 events. 6240/11114 cut-off events. For 188615/188663 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 81585 event pairs, 63 based on Foata normal form. 60/11172 useless extension candidates. Maximal degree in co-relation 80845. Up to 4838 conditions per place. [2025-03-09 01:24:43,966 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 947 selfloop transitions, 491 changer transitions 76/1520 dead transitions. [2025-03-09 01:24:43,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1520 transitions, 25510 flow [2025-03-09 01:24:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-09 01:24:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2025-03-09 01:24:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 531 transitions. [2025-03-09 01:24:43,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2025-03-09 01:24:43,969 INFO L175 Difference]: Start difference. First operand has 246 places, 927 transitions, 14206 flow. Second operand 42 states and 531 transitions. [2025-03-09 01:24:43,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1520 transitions, 25510 flow [2025-03-09 01:24:45,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1520 transitions, 24926 flow, removed 275 selfloop flow, removed 10 redundant places. [2025-03-09 01:24:45,178 INFO L231 Difference]: Finished difference. Result has 287 places, 1143 transitions, 18839 flow [2025-03-09 01:24:45,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13755, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=927, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=18839, PETRI_PLACES=287, PETRI_TRANSITIONS=1143} [2025-03-09 01:24:45,180 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 258 predicate places. [2025-03-09 01:24:45,180 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 1143 transitions, 18839 flow [2025-03-09 01:24:45,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.458333333333334) internal successors, (227), 24 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:45,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:24:45,182 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:24:45,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-09 01:24:45,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:45,382 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:24:45,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:24:45,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2075229111, now seen corresponding path program 5 times [2025-03-09 01:24:45,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:24:45,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675987889] [2025-03-09 01:24:45,383 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:45,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:24:45,389 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-03-09 01:24:45,400 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:24:45,400 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-09 01:24:45,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:24:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675987889] [2025-03-09 01:24:46,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675987889] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:24:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638077743] [2025-03-09 01:24:46,440 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:24:46,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:24:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:24:46,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:24:46,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 01:24:46,472 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 4 equivalence classes. [2025-03-09 01:24:46,490 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-03-09 01:24:46,490 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-03-09 01:24:46,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:24:46,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-09 01:24:46,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:24:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:47,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:24:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:24:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638077743] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:24:47,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:24:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2025-03-09 01:24:47,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238423541] [2025-03-09 01:24:47,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:24:47,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-03-09 01:24:47,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:24:47,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-03-09 01:24:47,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2025-03-09 01:24:47,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-09 01:24:47,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 1143 transitions, 18839 flow. Second operand has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:24:47,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:24:47,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-09 01:24:47,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:25:00,769 INFO L124 PetriNetUnfolderBase]: 11101/18791 cut-off events. [2025-03-09 01:25:00,769 INFO L125 PetriNetUnfolderBase]: For 360964/360964 co-relation queries the response was YES. [2025-03-09 01:25:00,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144230 conditions, 18791 events. 11101/18791 cut-off events. For 360964/360964 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 137163 event pairs, 156 based on Foata normal form. 27/18817 useless extension candidates. Maximal degree in co-relation 144012. Up to 3986 conditions per place. [2025-03-09 01:25:01,003 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 920 selfloop transitions, 1586 changer transitions 109/2618 dead transitions. [2025-03-09 01:25:01,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 2618 transitions, 47753 flow [2025-03-09 01:25:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2025-03-09 01:25:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2025-03-09 01:25:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 1159 transitions. [2025-03-09 01:25:01,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4011768778123918 [2025-03-09 01:25:01,009 INFO L175 Difference]: Start difference. First operand has 287 places, 1143 transitions, 18839 flow. Second operand 107 states and 1159 transitions. [2025-03-09 01:25:01,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 2618 transitions, 47753 flow [2025-03-09 01:25:04,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 2618 transitions, 46906 flow, removed 365 selfloop flow, removed 17 redundant places. [2025-03-09 01:25:04,107 INFO L231 Difference]: Finished difference. Result has 438 places, 2023 transitions, 39399 flow [2025-03-09 01:25:04,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=18483, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=798, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=39399, PETRI_PLACES=438, PETRI_TRANSITIONS=2023} [2025-03-09 01:25:04,108 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 409 predicate places. [2025-03-09 01:25:04,108 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 2023 transitions, 39399 flow [2025-03-09 01:25:04,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 8.0) internal successors, (288), 36 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:25:04,108 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:25:04,108 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:25:04,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-09 01:25:04,309 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,SelfDestructingSolverStorable10 [2025-03-09 01:25:04,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-09 01:25:04,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:25:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -286042525, now seen corresponding path program 5 times [2025-03-09 01:25:04,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:25:04,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192741650] [2025-03-09 01:25:04,310 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:25:04,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:25:04,317 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-09 01:25:04,338 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:25:04,338 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:25:04,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:25:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192741650] [2025-03-09 01:25:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192741650] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:25:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854379226] [2025-03-09 01:25:04,948 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:25:04,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:25:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:25:04,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:25:04,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 01:25:04,980 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 28 statements into 3 equivalence classes. [2025-03-09 01:25:05,003 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 28 of 28 statements. [2025-03-09 01:25:05,003 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-03-09 01:25:05,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:25:05,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-09 01:25:05,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:25:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:21,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:25:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:25:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854379226] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:25:23,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:25:23,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2025-03-09 01:25:23,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277696751] [2025-03-09 01:25:23,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:25:23,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-09 01:25:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:25:23,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-09 01:25:23,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=551, Unknown=4, NotChecked=0, Total=702 [2025-03-09 01:25:23,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-09 01:25:23,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 2023 transitions, 39399 flow. Second operand has 27 states, 27 states have (on average 9.555555555555555) internal successors, (258), 27 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:25:23,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:25:23,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-09 01:25:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand