./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.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/mult-flipped-dist.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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 01:21:33,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:21:33,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:21:33,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:21:33,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:21:33,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:21:33,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:21:33,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:21:33,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:21:33,277 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:21:33,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:21:33,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:21:33,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:21:33,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:21:33,278 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:21:33,279 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:21:33,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:33,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:21:33,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:21:33,280 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 -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2025-03-09 01:21:33,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:21:33,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:21:33,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:21:33,506 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:21:33,507 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:21:33,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2025-03-09 01:21:34,598 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d961361cf/1a688ddf2707446d9954e91f90473c63/FLAGa65a09d25 [2025-03-09 01:21:34,849 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:21:34,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2025-03-09 01:21:34,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d961361cf/1a688ddf2707446d9954e91f90473c63/FLAGa65a09d25 [2025-03-09 01:21:35,177 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d961361cf/1a688ddf2707446d9954e91f90473c63 [2025-03-09 01:21:35,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:21:35,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:21:35,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:35,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:21:35,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:21:35,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efd0336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35, skipping insertion in model container [2025-03-09 01:21:35,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:21:35,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:35,341 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:21:35,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:35,368 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:21:35,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35 WrapperNode [2025-03-09 01:21:35,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:35,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:35,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:21:35,371 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:21:35,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,393 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-03-09 01:21:35,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:35,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:21:35,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:21:35,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:21:35,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,412 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 01:21:35,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,423 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:21:35,428 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:21:35,428 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:21:35,428 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:21:35,429 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (1/1) ... [2025-03-09 01:21:35,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:35,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:35,456 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 01:21:35,459 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 01:21:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:21:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:21:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:21:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:21:35,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:21:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:21:35,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:21:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:21:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:21:35,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:21:35,479 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 01:21:35,537 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:21:35,538 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:21:35,663 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:21:35,663 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:21:35,743 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:21:35,743 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:21:35,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:35 BoogieIcfgContainer [2025-03-09 01:21:35,743 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:21:35,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:21:35,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:21:35,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:21:35,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:21:35" (1/3) ... [2025-03-09 01:21:35,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01e1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:35, skipping insertion in model container [2025-03-09 01:21:35,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:35" (2/3) ... [2025-03-09 01:21:35,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01e1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:35, skipping insertion in model container [2025-03-09 01:21:35,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:35" (3/3) ... [2025-03-09 01:21:35,753 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2025-03-09 01:21:35,764 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:21:35,765 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-flipped-dist.wvr.c that has 4 procedures, 25 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-03-09 01:21:35,765 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:21:35,816 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-09 01:21:35,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2025-03-09 01:21:35,863 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2025-03-09 01:21:35,865 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:21:35,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-03-09 01:21:35,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2025-03-09 01:21:35,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-03-09 01:21:35,877 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:21:35,884 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;@5af8037d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:21:35,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-09 01:21:35,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:21:35,894 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-03-09 01:21:35,894 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 01:21:35,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:35,894 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 01:21:35,895 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:35,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:35,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1149651452, now seen corresponding path program 1 times [2025-03-09 01:21:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:35,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814031825] [2025-03-09 01:21:35,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:35,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-09 01:21:35,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-09 01:21:35,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:35,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:36,269 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 01:21:36,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:36,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814031825] [2025-03-09 01:21:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814031825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:36,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:36,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 01:21:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422384060] [2025-03-09 01:21:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:36,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:21:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:36,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:21:36,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:21:36,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:36,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:36,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:36,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:36,447 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2025-03-09 01:21:36,447 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-03-09 01:21:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1789 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-03-09 01:21:36,454 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2025-03-09 01:21:36,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2025-03-09 01:21:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:21:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:21:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-03-09 01:21:36,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 01:21:36,467 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2025-03-09 01:21:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2025-03-09 01:21:36,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-09 01:21:36,475 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2025-03-09 01:21:36,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2025-03-09 01:21:36,480 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2025-03-09 01:21:36,480 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2025-03-09 01:21:36,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:36,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:36,480 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 01:21:36,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:21:36,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:36,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1003563306, now seen corresponding path program 1 times [2025-03-09 01:21:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:36,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484437481] [2025-03-09 01:21:36,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:36,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:36,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:36,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:36,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:36,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:36,596 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 01:21:36,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484437481] [2025-03-09 01:21:36,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484437481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:36,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:36,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:21:36,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431891579] [2025-03-09 01:21:36,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:36,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:21:36,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:36,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:21:36,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:21:36,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:36,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:36,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:36,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:36,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:36,765 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2025-03-09 01:21:36,766 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-03-09 01:21:36,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2438 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2025-03-09 01:21:36,772 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2025-03-09 01:21:36,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2025-03-09 01:21:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:21:36,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:21:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-03-09 01:21:36,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2025-03-09 01:21:36,774 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2025-03-09 01:21:36,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2025-03-09 01:21:36,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:36,777 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2025-03-09 01:21:36,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2025-03-09 01:21:36,778 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2025-03-09 01:21:36,778 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2025-03-09 01:21:36,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:36,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:36,779 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 01:21:36,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:21:36,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:36,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1922554400, now seen corresponding path program 1 times [2025-03-09 01:21:36,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:36,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515871736] [2025-03-09 01:21:36,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:36,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:36,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:36,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:36,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:36,860 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 01:21:36,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:36,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515871736] [2025-03-09 01:21:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515871736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:36,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-09 01:21:36,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956425063] [2025-03-09 01:21:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:36,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 01:21:36,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:36,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 01:21:36,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-09 01:21:36,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:36,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:36,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:36,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:36,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:37,026 INFO L124 PetriNetUnfolderBase]: 546/820 cut-off events. [2025-03-09 01:21:37,028 INFO L125 PetriNetUnfolderBase]: For 740/740 co-relation queries the response was YES. [2025-03-09 01:21:37,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 820 events. 546/820 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3146 event pairs, 144 based on Foata normal form. 65/885 useless extension candidates. Maximal degree in co-relation 2002. Up to 373 conditions per place. [2025-03-09 01:21:37,032 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 50 selfloop transitions, 10 changer transitions 5/66 dead transitions. [2025-03-09 01:21:37,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 385 flow [2025-03-09 01:21:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 01:21:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 01:21:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2025-03-09 01:21:37,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2025-03-09 01:21:37,035 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 5 states and 82 transitions. [2025-03-09 01:21:37,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 385 flow [2025-03-09 01:21:37,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 373 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:37,039 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 199 flow [2025-03-09 01:21:37,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2025-03-09 01:21:37,040 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-03-09 01:21:37,040 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 199 flow [2025-03-09 01:21:37,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:37,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:37,041 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 01:21:37,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:21:37,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:37,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 354896178, now seen corresponding path program 2 times [2025-03-09 01:21:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285027124] [2025-03-09 01:21:37,042 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:37,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,062 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,062 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:37,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,176 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 01:21:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285027124] [2025-03-09 01:21:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285027124] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579883912] [2025-03-09 01:21:37,177 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:37,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:37,179 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 01:21:37,181 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 01:21:37,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,232 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,232 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:37,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 01:21:37,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:37,264 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 01:21:37,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:37,303 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 01:21:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579883912] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-09 01:21:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2025-03-09 01:21:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653622927] [2025-03-09 01:21:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:37,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:21:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:37,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:21:37,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-09 01:21:37,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:37,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:37,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:37,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:37,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:37,440 INFO L124 PetriNetUnfolderBase]: 608/913 cut-off events. [2025-03-09 01:21:37,441 INFO L125 PetriNetUnfolderBase]: For 2143/2143 co-relation queries the response was YES. [2025-03-09 01:21:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 913 events. 608/913 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3433 event pairs, 158 based on Foata normal form. 31/944 useless extension candidates. Maximal degree in co-relation 2590. Up to 528 conditions per place. [2025-03-09 01:21:37,445 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 50 selfloop transitions, 7 changer transitions 10/68 dead transitions. [2025-03-09 01:21:37,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 501 flow [2025-03-09 01:21:37,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:21:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:21:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-03-09 01:21:37,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-03-09 01:21:37,446 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 199 flow. Second operand 4 states and 68 transitions. [2025-03-09 01:21:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 501 flow [2025-03-09 01:21:37,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:37,453 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 223 flow [2025-03-09 01:21:37,453 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2025-03-09 01:21:37,454 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2025-03-09 01:21:37,454 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 223 flow [2025-03-09 01:21:37,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:37,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:37,454 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 01:21:37,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:37,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:37,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:37,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:37,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2078148164, now seen corresponding path program 2 times [2025-03-09 01:21:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:37,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812566569] [2025-03-09 01:21:37,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:37,660 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,665 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,666 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:37,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,717 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 01:21:37,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:37,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812566569] [2025-03-09 01:21:37,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812566569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:37,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:37,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:21:37,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516441122] [2025-03-09 01:21:37,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:37,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:21:37,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:37,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:21:37,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:21:37,720 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:37,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:37,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:37,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:37,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:37,856 INFO L124 PetriNetUnfolderBase]: 739/1132 cut-off events. [2025-03-09 01:21:37,856 INFO L125 PetriNetUnfolderBase]: For 3098/3098 co-relation queries the response was YES. [2025-03-09 01:21:37,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 1132 events. 739/1132 cut-off events. For 3098/3098 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4697 event pairs, 225 based on Foata normal form. 42/1174 useless extension candidates. Maximal degree in co-relation 3132. Up to 610 conditions per place. [2025-03-09 01:21:37,862 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 54 selfloop transitions, 10 changer transitions 4/69 dead transitions. [2025-03-09 01:21:37,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 523 flow [2025-03-09 01:21:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:21:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:21:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-03-09 01:21:37,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2025-03-09 01:21:37,864 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 223 flow. Second operand 4 states and 65 transitions. [2025-03-09 01:21:37,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 523 flow [2025-03-09 01:21:37,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 508 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:37,874 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 279 flow [2025-03-09 01:21:37,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-03-09 01:21:37,875 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-03-09 01:21:37,875 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 279 flow [2025-03-09 01:21:37,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:37,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:37,875 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 01:21:37,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 01:21:37,875 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:37,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 240884068, now seen corresponding path program 3 times [2025-03-09 01:21:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:37,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222355918] [2025-03-09 01:21:37,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:37,892 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:37,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:37,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:37,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:37,937 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 01:21:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222355918] [2025-03-09 01:21:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222355918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:37,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:37,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:21:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241599708] [2025-03-09 01:21:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:37,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:21:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:37,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:21:37,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:21:37,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:37,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:37,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:37,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:37,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:38,113 INFO L124 PetriNetUnfolderBase]: 825/1258 cut-off events. [2025-03-09 01:21:38,113 INFO L125 PetriNetUnfolderBase]: For 4730/4730 co-relation queries the response was YES. [2025-03-09 01:21:38,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 1258 events. 825/1258 cut-off events. For 4730/4730 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5222 event pairs, 254 based on Foata normal form. 40/1298 useless extension candidates. Maximal degree in co-relation 4090. Up to 845 conditions per place. [2025-03-09 01:21:38,122 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 54 selfloop transitions, 8 changer transitions 12/75 dead transitions. [2025-03-09 01:21:38,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 661 flow [2025-03-09 01:21:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:21:38,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:21:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2025-03-09 01:21:38,124 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2025-03-09 01:21:38,124 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 279 flow. Second operand 4 states and 68 transitions. [2025-03-09 01:21:38,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 661 flow [2025-03-09 01:21:38,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 623 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:38,130 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 314 flow [2025-03-09 01:21:38,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2025-03-09 01:21:38,131 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2025-03-09 01:21:38,131 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 314 flow [2025-03-09 01:21:38,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:38,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:38,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:38,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 01:21:38,131 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:38,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1515645236, now seen corresponding path program 3 times [2025-03-09 01:21:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140131968] [2025-03-09 01:21:38,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:38,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:38,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:38,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:38,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:38,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:38,174 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 01:21:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140131968] [2025-03-09 01:21:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140131968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:38,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 01:21:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122984532] [2025-03-09 01:21:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:38,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 01:21:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:38,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 01:21:38,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 01:21:38,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:38,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:38,340 INFO L124 PetriNetUnfolderBase]: 972/1506 cut-off events. [2025-03-09 01:21:38,340 INFO L125 PetriNetUnfolderBase]: For 5933/5933 co-relation queries the response was YES. [2025-03-09 01:21:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 1506 events. 972/1506 cut-off events. For 5933/5933 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6562 event pairs, 372 based on Foata normal form. 44/1550 useless extension candidates. Maximal degree in co-relation 4105. Up to 953 conditions per place. [2025-03-09 01:21:38,350 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 68 selfloop transitions, 6 changer transitions 13/88 dead transitions. [2025-03-09 01:21:38,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 88 transitions, 835 flow [2025-03-09 01:21:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 01:21:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 01:21:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2025-03-09 01:21:38,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-03-09 01:21:38,352 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 314 flow. Second operand 4 states and 62 transitions. [2025-03-09 01:21:38,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 88 transitions, 835 flow [2025-03-09 01:21:38,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 88 transitions, 826 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:38,358 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 366 flow [2025-03-09 01:21:38,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=366, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2025-03-09 01:21:38,359 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-03-09 01:21:38,359 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 366 flow [2025-03-09 01:21:38,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 01:21:38,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:38,359 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 01:21:38,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 01:21:38,360 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:38,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash -191794454, now seen corresponding path program 1 times [2025-03-09 01:21:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:38,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615769244] [2025-03-09 01:21:38,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:38,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:38,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:38,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:38,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:38,433 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 01:21:38,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:38,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615769244] [2025-03-09 01:21:38,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615769244] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:38,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532647572] [2025-03-09 01:21:38,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:38,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:38,436 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 01:21:38,439 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 01:21:38,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 01:21:38,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:38,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:38,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:38,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:21:38,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:38,540 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 01:21:38,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:38,596 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 01:21:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532647572] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:38,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 01:21:38,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778454816] [2025-03-09 01:21:38,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:38,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:21:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:38,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:21:38,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:21:38,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:38,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 366 flow. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 01:21:38,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:39,020 INFO L124 PetriNetUnfolderBase]: 1166/1734 cut-off events. [2025-03-09 01:21:39,020 INFO L125 PetriNetUnfolderBase]: For 9184/9184 co-relation queries the response was YES. [2025-03-09 01:21:39,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8979 conditions, 1734 events. 1166/1734 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7527 event pairs, 275 based on Foata normal form. 117/1851 useless extension candidates. Maximal degree in co-relation 5917. Up to 830 conditions per place. [2025-03-09 01:21:39,032 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 76 selfloop transitions, 73 changer transitions 23/173 dead transitions. [2025-03-09 01:21:39,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 173 transitions, 1872 flow [2025-03-09 01:21:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:21:39,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:21:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2025-03-09 01:21:39,033 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-09 01:21:39,034 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 366 flow. Second operand 13 states and 189 transitions. [2025-03-09 01:21:39,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 173 transitions, 1872 flow [2025-03-09 01:21:39,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 173 transitions, 1784 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:39,048 INFO L231 Difference]: Finished difference. Result has 70 places, 101 transitions, 1288 flow [2025-03-09 01:21:39,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1288, PETRI_PLACES=70, PETRI_TRANSITIONS=101} [2025-03-09 01:21:39,050 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2025-03-09 01:21:39,050 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 101 transitions, 1288 flow [2025-03-09 01:21:39,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 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 01:21:39,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:39,051 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 01:21:39,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:39,251 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,SelfDestructingSolverStorable7 [2025-03-09 01:21:39,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:39,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:39,253 INFO L85 PathProgramCache]: Analyzing trace with hash 250726278, now seen corresponding path program 4 times [2025-03-09 01:21:39,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:39,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909324693] [2025-03-09 01:21:39,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:39,258 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:39,262 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:39,262 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:39,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:39,306 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 01:21:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909324693] [2025-03-09 01:21:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909324693] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981500215] [2025-03-09 01:21:39,306 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:39,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:39,308 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 01:21:39,310 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 01:21:39,340 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-09 01:21:39,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 01:21:39,353 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:39,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:39,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 01:21:39,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:39,400 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 01:21:39,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:39,447 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 01:21:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981500215] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:39,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 01:21:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008173150] [2025-03-09 01:21:39,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:39,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:21:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:39,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:21:39,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:21:39,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:39,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 101 transitions, 1288 flow. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 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 01:21:39,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:39,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:39,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:39,814 INFO L124 PetriNetUnfolderBase]: 990/1430 cut-off events. [2025-03-09 01:21:39,814 INFO L125 PetriNetUnfolderBase]: For 12202/12202 co-relation queries the response was YES. [2025-03-09 01:21:39,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9006 conditions, 1430 events. 990/1430 cut-off events. For 12202/12202 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5606 event pairs, 78 based on Foata normal form. 80/1510 useless extension candidates. Maximal degree in co-relation 8074. Up to 705 conditions per place. [2025-03-09 01:21:39,822 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 80 selfloop transitions, 94 changer transitions 4/179 dead transitions. [2025-03-09 01:21:39,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 179 transitions, 2359 flow [2025-03-09 01:21:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 01:21:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 01:21:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2025-03-09 01:21:39,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2025-03-09 01:21:39,824 INFO L175 Difference]: Start difference. First operand has 70 places, 101 transitions, 1288 flow. Second operand 12 states and 164 transitions. [2025-03-09 01:21:39,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 179 transitions, 2359 flow [2025-03-09 01:21:39,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 179 transitions, 1934 flow, removed 175 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:39,845 INFO L231 Difference]: Finished difference. Result has 82 places, 126 transitions, 1584 flow [2025-03-09 01:21:39,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1584, PETRI_PLACES=82, PETRI_TRANSITIONS=126} [2025-03-09 01:21:39,845 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2025-03-09 01:21:39,845 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 126 transitions, 1584 flow [2025-03-09 01:21:39,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 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 01:21:39,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:39,846 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] [2025-03-09 01:21:39,852 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 01:21:40,050 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 01:21:40,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:40,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1406695884, now seen corresponding path program 1 times [2025-03-09 01:21:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:40,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595193083] [2025-03-09 01:21:40,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:40,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:40,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:21:40,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:40,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:40,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:40,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:40,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595193083] [2025-03-09 01:21:40,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595193083] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:40,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442033509] [2025-03-09 01:21:40,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:40,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:40,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:40,262 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 01:21:40,264 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 01:21:40,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-09 01:21:40,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:40,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:40,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:40,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:40,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:40,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:40,407 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:40,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442033509] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:40,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:40,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-03-09 01:21:40,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306383190] [2025-03-09 01:21:40,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:40,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:21:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:40,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:21:40,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:21:40,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:40,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 126 transitions, 1584 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:40,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:40,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:41,126 INFO L124 PetriNetUnfolderBase]: 1411/2031 cut-off events. [2025-03-09 01:21:41,127 INFO L125 PetriNetUnfolderBase]: For 13570/13570 co-relation queries the response was YES. [2025-03-09 01:21:41,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 2031 events. 1411/2031 cut-off events. For 13570/13570 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8076 event pairs, 160 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 10974. Up to 1460 conditions per place. [2025-03-09 01:21:41,144 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 152 selfloop transitions, 58 changer transitions 2/213 dead transitions. [2025-03-09 01:21:41,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 213 transitions, 2668 flow [2025-03-09 01:21:41,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:41,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2025-03-09 01:21:41,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2025-03-09 01:21:41,146 INFO L175 Difference]: Start difference. First operand has 82 places, 126 transitions, 1584 flow. Second operand 9 states and 143 transitions. [2025-03-09 01:21:41,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 213 transitions, 2668 flow [2025-03-09 01:21:41,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 213 transitions, 2334 flow, removed 36 selfloop flow, removed 10 redundant places. [2025-03-09 01:21:41,180 INFO L231 Difference]: Finished difference. Result has 81 places, 158 transitions, 1872 flow [2025-03-09 01:21:41,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1872, PETRI_PLACES=81, PETRI_TRANSITIONS=158} [2025-03-09 01:21:41,181 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-03-09 01:21:41,181 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 158 transitions, 1872 flow [2025-03-09 01:21:41,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:41,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:41,182 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] [2025-03-09 01:21:41,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:41,382 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 01:21:41,382 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:41,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1654730824, now seen corresponding path program 2 times [2025-03-09 01:21:41,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:41,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606406171] [2025-03-09 01:21:41,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:41,387 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:41,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:41,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:41,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606406171] [2025-03-09 01:21:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606406171] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020242229] [2025-03-09 01:21:41,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:41,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:41,567 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 01:21:41,569 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 01:21:41,595 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:41,614 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:41,614 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:41,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:41,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:41,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:41,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020242229] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:42,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:42,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-03-09 01:21:42,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536476849] [2025-03-09 01:21:42,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:42,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:21:42,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:42,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:21:42,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:21:42,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:42,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 158 transitions, 1872 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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 01:21:42,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:42,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:42,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:42,355 INFO L124 PetriNetUnfolderBase]: 1707/2463 cut-off events. [2025-03-09 01:21:42,355 INFO L125 PetriNetUnfolderBase]: For 15685/15685 co-relation queries the response was YES. [2025-03-09 01:21:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14183 conditions, 2463 events. 1707/2463 cut-off events. For 15685/15685 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10103 event pairs, 279 based on Foata normal form. 2/2465 useless extension candidates. Maximal degree in co-relation 13608. Up to 1895 conditions per place. [2025-03-09 01:21:42,367 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 165 selfloop transitions, 61 changer transitions 2/229 dead transitions. [2025-03-09 01:21:42,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 229 transitions, 2829 flow [2025-03-09 01:21:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-09 01:21:42,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2025-03-09 01:21:42,369 INFO L175 Difference]: Start difference. First operand has 81 places, 158 transitions, 1872 flow. Second operand 9 states and 140 transitions. [2025-03-09 01:21:42,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 229 transitions, 2829 flow [2025-03-09 01:21:42,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 229 transitions, 2645 flow, removed 79 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:42,401 INFO L231 Difference]: Finished difference. Result has 91 places, 177 transitions, 2129 flow [2025-03-09 01:21:42,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2129, PETRI_PLACES=91, PETRI_TRANSITIONS=177} [2025-03-09 01:21:42,402 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-03-09 01:21:42,402 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 177 transitions, 2129 flow [2025-03-09 01:21:42,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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 01:21:42,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:42,402 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] [2025-03-09 01:21:42,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:42,603 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 01:21:42,603 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:42,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 544554414, now seen corresponding path program 3 times [2025-03-09 01:21:42,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:42,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912220580] [2025-03-09 01:21:42,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:42,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:42,621 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:42,621 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:42,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:42,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912220580] [2025-03-09 01:21:42,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912220580] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:42,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251154049] [2025-03-09 01:21:42,744 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:42,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:42,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:42,746 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 01:21:42,748 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 01:21:42,776 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:42,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:42,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:42,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:42,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:42,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:42,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251154049] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:43,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-03-09 01:21:43,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092424256] [2025-03-09 01:21:43,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:43,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:21:43,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:43,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:21:43,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:21:43,332 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:43,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 177 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:43,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:43,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:43,727 INFO L124 PetriNetUnfolderBase]: 2132/3081 cut-off events. [2025-03-09 01:21:43,727 INFO L125 PetriNetUnfolderBase]: For 21084/21084 co-relation queries the response was YES. [2025-03-09 01:21:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17810 conditions, 3081 events. 2132/3081 cut-off events. For 21084/21084 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13175 event pairs, 430 based on Foata normal form. 2/3083 useless extension candidates. Maximal degree in co-relation 17381. Up to 2537 conditions per place. [2025-03-09 01:21:43,750 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 200 selfloop transitions, 59 changer transitions 2/262 dead transitions. [2025-03-09 01:21:43,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 262 transitions, 3388 flow [2025-03-09 01:21:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2025-03-09 01:21:43,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2025-03-09 01:21:43,751 INFO L175 Difference]: Start difference. First operand has 91 places, 177 transitions, 2129 flow. Second operand 9 states and 140 transitions. [2025-03-09 01:21:43,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 262 transitions, 3388 flow [2025-03-09 01:21:43,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 262 transitions, 3179 flow, removed 79 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:43,811 INFO L231 Difference]: Finished difference. Result has 100 places, 210 transitions, 2615 flow [2025-03-09 01:21:43,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1920, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2615, PETRI_PLACES=100, PETRI_TRANSITIONS=210} [2025-03-09 01:21:43,813 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2025-03-09 01:21:43,813 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 210 transitions, 2615 flow [2025-03-09 01:21:43,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:43,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:43,814 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] [2025-03-09 01:21:43,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:44,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:44,015 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:44,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1152019026, now seen corresponding path program 4 times [2025-03-09 01:21:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281648183] [2025-03-09 01:21:44,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:44,021 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:44,027 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:44,027 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:44,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:44,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281648183] [2025-03-09 01:21:44,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281648183] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:44,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479663128] [2025-03-09 01:21:44,158 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:44,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:44,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:44,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 01:21:44,192 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:44,208 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:44,208 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:44,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:44,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:44,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:44,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479663128] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:44,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:44,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-03-09 01:21:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467554159] [2025-03-09 01:21:44,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:44,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:21:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:44,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:21:44,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:21:44,630 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:44,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 210 transitions, 2615 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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 01:21:44,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:44,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:44,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:45,017 INFO L124 PetriNetUnfolderBase]: 2412/3489 cut-off events. [2025-03-09 01:21:45,017 INFO L125 PetriNetUnfolderBase]: For 24886/24886 co-relation queries the response was YES. [2025-03-09 01:21:45,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20360 conditions, 3489 events. 2412/3489 cut-off events. For 24886/24886 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15350 event pairs, 544 based on Foata normal form. 2/3491 useless extension candidates. Maximal degree in co-relation 19900. Up to 2968 conditions per place. [2025-03-09 01:21:45,036 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 212 selfloop transitions, 62 changer transitions 2/277 dead transitions. [2025-03-09 01:21:45,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 277 transitions, 3742 flow [2025-03-09 01:21:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2025-03-09 01:21:45,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2025-03-09 01:21:45,038 INFO L175 Difference]: Start difference. First operand has 100 places, 210 transitions, 2615 flow. Second operand 9 states and 136 transitions. [2025-03-09 01:21:45,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 277 transitions, 3742 flow [2025-03-09 01:21:45,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 277 transitions, 3484 flow, removed 116 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:45,123 INFO L231 Difference]: Finished difference. Result has 110 places, 229 transitions, 2865 flow [2025-03-09 01:21:45,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2865, PETRI_PLACES=110, PETRI_TRANSITIONS=229} [2025-03-09 01:21:45,124 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2025-03-09 01:21:45,124 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 229 transitions, 2865 flow [2025-03-09 01:21:45,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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 01:21:45,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:45,124 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] [2025-03-09 01:21:45,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:45,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:45,325 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:45,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:45,325 INFO L85 PathProgramCache]: Analyzing trace with hash -261220434, now seen corresponding path program 5 times [2025-03-09 01:21:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406060257] [2025-03-09 01:21:45,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:45,329 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:45,333 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:45,333 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:45,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406060257] [2025-03-09 01:21:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406060257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:45,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350213200] [2025-03-09 01:21:45,432 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:21:45,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:45,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:45,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:45,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 01:21:45,461 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:45,477 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:45,477 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:45,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:45,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:45,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:45,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350213200] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:46,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2025-03-09 01:21:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122974501] [2025-03-09 01:21:46,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:21:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:46,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:21:46,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:21:46,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:46,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 229 transitions, 2865 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 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 01:21:46,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:46,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:46,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:46,881 INFO L124 PetriNetUnfolderBase]: 2768/4002 cut-off events. [2025-03-09 01:21:46,881 INFO L125 PetriNetUnfolderBase]: For 29913/29913 co-relation queries the response was YES. [2025-03-09 01:21:46,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23311 conditions, 4002 events. 2768/4002 cut-off events. For 29913/29913 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18224 event pairs, 672 based on Foata normal form. 1/4003 useless extension candidates. Maximal degree in co-relation 22807. Up to 3541 conditions per place. [2025-03-09 01:21:46,902 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 242 selfloop transitions, 61 changer transitions 1/305 dead transitions. [2025-03-09 01:21:46,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 305 transitions, 4266 flow [2025-03-09 01:21:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:21:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:21:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 119 transitions. [2025-03-09 01:21:46,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2025-03-09 01:21:46,905 INFO L175 Difference]: Start difference. First operand has 110 places, 229 transitions, 2865 flow. Second operand 8 states and 119 transitions. [2025-03-09 01:21:46,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 305 transitions, 4266 flow [2025-03-09 01:21:46,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 305 transitions, 4004 flow, removed 105 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:46,968 INFO L231 Difference]: Finished difference. Result has 118 places, 264 transitions, 3383 flow [2025-03-09 01:21:46,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3383, PETRI_PLACES=118, PETRI_TRANSITIONS=264} [2025-03-09 01:21:46,969 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2025-03-09 01:21:46,969 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 264 transitions, 3383 flow [2025-03-09 01:21:46,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 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 01:21:46,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:46,969 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] [2025-03-09 01:21:46,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:47,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-09 01:21:47,170 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 977243950, now seen corresponding path program 6 times [2025-03-09 01:21:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857555174] [2025-03-09 01:21:47,170 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:47,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:47,174 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:47,183 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:47,183 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:47,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857555174] [2025-03-09 01:21:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857555174] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231051349] [2025-03-09 01:21:47,292 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:21:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:47,295 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:47,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 01:21:47,323 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-03-09 01:21:47,341 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-09 01:21:47,342 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:21:47,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:47,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 01:21:47,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:47,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231051349] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:48,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:48,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-03-09 01:21:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282862298] [2025-03-09 01:21:48,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:48,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 01:21:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:48,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 01:21:48,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-03-09 01:21:48,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:48,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 264 transitions, 3383 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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 01:21:48,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:48,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:48,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:49,012 INFO L124 PetriNetUnfolderBase]: 3048/4410 cut-off events. [2025-03-09 01:21:49,012 INFO L125 PetriNetUnfolderBase]: For 34542/34542 co-relation queries the response was YES. [2025-03-09 01:21:49,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25996 conditions, 4410 events. 3048/4410 cut-off events. For 34542/34542 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20411 event pairs, 771 based on Foata normal form. 2/4412 useless extension candidates. Maximal degree in co-relation 25471. Up to 3912 conditions per place. [2025-03-09 01:21:49,037 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 263 selfloop transitions, 64 changer transitions 2/330 dead transitions. [2025-03-09 01:21:49,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 330 transitions, 4712 flow [2025-03-09 01:21:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-09 01:21:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-09 01:21:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2025-03-09 01:21:49,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2025-03-09 01:21:49,039 INFO L175 Difference]: Start difference. First operand has 118 places, 264 transitions, 3383 flow. Second operand 9 states and 134 transitions. [2025-03-09 01:21:49,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 330 transitions, 4712 flow [2025-03-09 01:21:49,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 330 transitions, 4406 flow, removed 140 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:49,116 INFO L231 Difference]: Finished difference. Result has 128 places, 283 transitions, 3660 flow [2025-03-09 01:21:49,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3660, PETRI_PLACES=128, PETRI_TRANSITIONS=283} [2025-03-09 01:21:49,117 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2025-03-09 01:21:49,117 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 283 transitions, 3660 flow [2025-03-09 01:21:49,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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 01:21:49,117 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:49,117 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:49,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:49,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-09 01:21:49,318 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:49,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash 805081396, now seen corresponding path program 7 times [2025-03-09 01:21:49,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:49,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291476371] [2025-03-09 01:21:49,318 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:21:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:49,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:21:49,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:49,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:49,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:49,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:49,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291476371] [2025-03-09 01:21:49,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291476371] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:49,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990631997] [2025-03-09 01:21:49,399 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:21:49,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:49,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:49,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:49,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 01:21:49,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:21:49,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:49,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:49,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:49,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:21:49,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:49,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990631997] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:49,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:49,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-03-09 01:21:49,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278819732] [2025-03-09 01:21:49,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:49,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 01:21:49,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:49,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 01:21:49,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-09 01:21:49,518 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:49,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 283 transitions, 3660 flow. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:49,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:49,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:49,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:50,292 INFO L124 PetriNetUnfolderBase]: 4613/6557 cut-off events. [2025-03-09 01:21:50,293 INFO L125 PetriNetUnfolderBase]: For 57505/57505 co-relation queries the response was YES. [2025-03-09 01:21:50,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38035 conditions, 6557 events. 4613/6557 cut-off events. For 57505/57505 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31136 event pairs, 436 based on Foata normal form. 41/6598 useless extension candidates. Maximal degree in co-relation 36952. Up to 2111 conditions per place. [2025-03-09 01:21:50,336 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 515 selfloop transitions, 134 changer transitions 0/650 dead transitions. [2025-03-09 01:21:50,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 650 transitions, 9275 flow [2025-03-09 01:21:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 01:21:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 01:21:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2025-03-09 01:21:50,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2025-03-09 01:21:50,339 INFO L175 Difference]: Start difference. First operand has 128 places, 283 transitions, 3660 flow. Second operand 13 states and 204 transitions. [2025-03-09 01:21:50,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 650 transitions, 9275 flow [2025-03-09 01:21:50,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 650 transitions, 8408 flow, removed 407 selfloop flow, removed 2 redundant places. [2025-03-09 01:21:50,447 INFO L231 Difference]: Finished difference. Result has 145 places, 349 transitions, 4512 flow [2025-03-09 01:21:50,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4512, PETRI_PLACES=145, PETRI_TRANSITIONS=349} [2025-03-09 01:21:50,447 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2025-03-09 01:21:50,447 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 349 transitions, 4512 flow [2025-03-09 01:21:50,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:21:50,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:50,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:50,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-09 01:21:50,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-09 01:21:50,648 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:50,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash -471621144, now seen corresponding path program 8 times [2025-03-09 01:21:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855839975] [2025-03-09 01:21:50,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:50,652 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:50,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:50,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:50,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855839975] [2025-03-09 01:21:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855839975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131034549] [2025-03-09 01:21:50,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:21:50,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:50,839 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:50,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-09 01:21:50,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:50,899 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:50,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:21:50,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:50,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:21:50,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:50,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131034549] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:51,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:51,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-09 01:21:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834108841] [2025-03-09 01:21:51,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:51,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 01:21:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:51,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 01:21:51,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-09 01:21:51,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:51,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 349 transitions, 4512 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 01:21:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:52,510 INFO L124 PetriNetUnfolderBase]: 6612/9219 cut-off events. [2025-03-09 01:21:52,510 INFO L125 PetriNetUnfolderBase]: For 102397/102397 co-relation queries the response was YES. [2025-03-09 01:21:52,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63751 conditions, 9219 events. 6612/9219 cut-off events. For 102397/102397 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 43926 event pairs, 746 based on Foata normal form. 166/9385 useless extension candidates. Maximal degree in co-relation 61980. Up to 3683 conditions per place. [2025-03-09 01:21:52,640 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 692 selfloop transitions, 231 changer transitions 0/924 dead transitions. [2025-03-09 01:21:52,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 924 transitions, 14114 flow [2025-03-09 01:21:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 01:21:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-09 01:21:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 318 transitions. [2025-03-09 01:21:52,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2025-03-09 01:21:52,641 INFO L175 Difference]: Start difference. First operand has 145 places, 349 transitions, 4512 flow. Second operand 23 states and 318 transitions. [2025-03-09 01:21:52,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 924 transitions, 14114 flow [2025-03-09 01:21:52,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 924 transitions, 13181 flow, removed 386 selfloop flow, removed 1 redundant places. [2025-03-09 01:21:52,990 INFO L231 Difference]: Finished difference. Result has 176 places, 507 transitions, 7608 flow [2025-03-09 01:21:52,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7608, PETRI_PLACES=176, PETRI_TRANSITIONS=507} [2025-03-09 01:21:52,991 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2025-03-09 01:21:52,991 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 507 transitions, 7608 flow [2025-03-09 01:21:52,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 01:21:52,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:52,991 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:52,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-09 01:21:53,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-09 01:21:53,192 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:53,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:53,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2146370104, now seen corresponding path program 9 times [2025-03-09 01:21:53,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:53,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806475102] [2025-03-09 01:21:53,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:53,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:53,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:53,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:53,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806475102] [2025-03-09 01:21:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806475102] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711054381] [2025-03-09 01:21:53,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:21:53,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:53,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:53,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:53,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-09 01:21:53,296 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:53,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:53,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-09 01:21:53,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:53,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:21:53,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:53,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:53,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:53,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711054381] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:53,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:53,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-03-09 01:21:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041453186] [2025-03-09 01:21:53,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:53,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 01:21:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:53,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 01:21:53,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-03-09 01:21:53,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:53,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 507 transitions, 7608 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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 01:21:53,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:53,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:53,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:21:54,890 INFO L124 PetriNetUnfolderBase]: 7009/9875 cut-off events. [2025-03-09 01:21:54,890 INFO L125 PetriNetUnfolderBase]: For 173178/173178 co-relation queries the response was YES. [2025-03-09 01:21:54,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77704 conditions, 9875 events. 7009/9875 cut-off events. For 173178/173178 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 49533 event pairs, 1493 based on Foata normal form. 197/10072 useless extension candidates. Maximal degree in co-relation 75528. Up to 5343 conditions per place. [2025-03-09 01:21:54,990 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 655 selfloop transitions, 153 changer transitions 64/873 dead transitions. [2025-03-09 01:21:54,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 873 transitions, 16313 flow [2025-03-09 01:21:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 01:21:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 01:21:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2025-03-09 01:21:54,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-03-09 01:21:54,991 INFO L175 Difference]: Start difference. First operand has 176 places, 507 transitions, 7608 flow. Second operand 8 states and 123 transitions. [2025-03-09 01:21:54,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 873 transitions, 16313 flow [2025-03-09 01:21:56,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 873 transitions, 13409 flow, removed 1452 selfloop flow, removed 0 redundant places. [2025-03-09 01:21:56,018 INFO L231 Difference]: Finished difference. Result has 187 places, 575 transitions, 8387 flow [2025-03-09 01:21:56,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6634, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8387, PETRI_PLACES=187, PETRI_TRANSITIONS=575} [2025-03-09 01:21:56,018 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2025-03-09 01:21:56,018 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 575 transitions, 8387 flow [2025-03-09 01:21:56,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 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 01:21:56,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:56,018 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:21:56,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-09 01:21:56,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 01:21:56,219 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:21:56,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -209328124, now seen corresponding path program 10 times [2025-03-09 01:21:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997794757] [2025-03-09 01:21:56,219 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:56,223 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:56,226 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:56,226 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:56,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:56,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:56,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997794757] [2025-03-09 01:21:56,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997794757] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:21:56,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710011176] [2025-03-09 01:21:56,319 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:21:56,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:21:56,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:56,321 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:21:56,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-09 01:21:56,353 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:21:56,365 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:21:56,365 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:21:56,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:56,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:21:56,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:21:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:56,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:21:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:21:56,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710011176] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:21:56,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:21:56,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-03-09 01:21:56,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838949008] [2025-03-09 01:21:56,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:21:56,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 01:21:56,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:56,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 01:21:56,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2025-03-09 01:21:56,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:21:56,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 575 transitions, 8387 flow. Second operand has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 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 01:21:56,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:56,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:21:56,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:03,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-09 01:22:04,507 INFO L124 PetriNetUnfolderBase]: 9713/13625 cut-off events. [2025-03-09 01:22:04,508 INFO L125 PetriNetUnfolderBase]: For 254719/254719 co-relation queries the response was YES. [2025-03-09 01:22:04,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104319 conditions, 13625 events. 9713/13625 cut-off events. For 254719/254719 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 71740 event pairs, 742 based on Foata normal form. 627/14252 useless extension candidates. Maximal degree in co-relation 101894. Up to 5073 conditions per place. [2025-03-09 01:22:04,737 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 835 selfloop transitions, 747 changer transitions 104/1687 dead transitions. [2025-03-09 01:22:04,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1687 transitions, 28757 flow [2025-03-09 01:22:04,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-03-09 01:22:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2025-03-09 01:22:04,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 877 transitions. [2025-03-09 01:22:04,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44495180111618465 [2025-03-09 01:22:04,740 INFO L175 Difference]: Start difference. First operand has 187 places, 575 transitions, 8387 flow. Second operand 73 states and 877 transitions. [2025-03-09 01:22:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1687 transitions, 28757 flow [2025-03-09 01:22:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1687 transitions, 28213 flow, removed 183 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:06,592 INFO L231 Difference]: Finished difference. Result has 290 places, 1139 transitions, 21687 flow [2025-03-09 01:22:06,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8089, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=21687, PETRI_PLACES=290, PETRI_TRANSITIONS=1139} [2025-03-09 01:22:06,593 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2025-03-09 01:22:06,593 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 1139 transitions, 21687 flow [2025-03-09 01:22:06,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.222222222222222) internal successors, (130), 18 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:06,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:06,593 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:06,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:06,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:06,794 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:06,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:06,794 INFO L85 PathProgramCache]: Analyzing trace with hash -757641854, now seen corresponding path program 11 times [2025-03-09 01:22:06,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:06,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501466360] [2025-03-09 01:22:06,794 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:06,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:06,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:22:06,806 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:06,806 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:06,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:06,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501466360] [2025-03-09 01:22:06,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501466360] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:06,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965409814] [2025-03-09 01:22:06,885 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:06,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:06,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:06,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:06,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-09 01:22:06,916 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:22:06,930 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:06,930 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-09 01:22:06,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:06,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:22:06,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:06,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965409814] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:07,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2025-03-09 01:22:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926996947] [2025-03-09 01:22:07,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:07,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-09 01:22:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:07,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-09 01:22:07,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-09 01:22:07,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:07,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 1139 transitions, 21687 flow. Second operand has 16 states, 16 states have (on average 7.5) internal successors, (120), 16 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:07,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:07,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:07,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:12,761 INFO L124 PetriNetUnfolderBase]: 13826/19134 cut-off events. [2025-03-09 01:22:12,762 INFO L125 PetriNetUnfolderBase]: For 633187/633187 co-relation queries the response was YES. [2025-03-09 01:22:12,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180011 conditions, 19134 events. 13826/19134 cut-off events. For 633187/633187 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 103877 event pairs, 597 based on Foata normal form. 738/19872 useless extension candidates. Maximal degree in co-relation 179486. Up to 6157 conditions per place. [2025-03-09 01:22:13,020 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1636 selfloop transitions, 1254 changer transitions 37/2928 dead transitions. [2025-03-09 01:22:13,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 2928 transitions, 61890 flow [2025-03-09 01:22:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-03-09 01:22:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-03-09 01:22:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 729 transitions. [2025-03-09 01:22:13,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2025-03-09 01:22:13,022 INFO L175 Difference]: Start difference. First operand has 290 places, 1139 transitions, 21687 flow. Second operand 57 states and 729 transitions. [2025-03-09 01:22:13,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 2928 transitions, 61890 flow [2025-03-09 01:22:22,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 2928 transitions, 52845 flow, removed 4248 selfloop flow, removed 7 redundant places. [2025-03-09 01:22:22,204 INFO L231 Difference]: Finished difference. Result has 375 places, 2003 transitions, 38941 flow [2025-03-09 01:22:22,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=16568, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=38941, PETRI_PLACES=375, PETRI_TRANSITIONS=2003} [2025-03-09 01:22:22,206 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2025-03-09 01:22:22,206 INFO L471 AbstractCegarLoop]: Abstraction has has 375 places, 2003 transitions, 38941 flow [2025-03-09 01:22:22,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5) internal successors, (120), 16 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:22,206 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:22,206 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:22,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-09 01:22:22,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:22,411 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:22,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2130498310, now seen corresponding path program 12 times [2025-03-09 01:22:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812068374] [2025-03-09 01:22:22,412 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:22:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:22,415 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:22:22,420 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:22,420 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:22:22,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:22,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:22,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812068374] [2025-03-09 01:22:22,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812068374] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:22,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440004910] [2025-03-09 01:22:22,546 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 01:22:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:22,549 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:22,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-09 01:22:22,586 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-03-09 01:22:22,602 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:22,602 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-09 01:22:22,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:22,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:22:22,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:22,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440004910] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:22,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-03-09 01:22:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064485966] [2025-03-09 01:22:22,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:22,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-09 01:22:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:22,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-09 01:22:22,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-03-09 01:22:22,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:22,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 2003 transitions, 38941 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:22,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:22,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:22,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:31,995 INFO L124 PetriNetUnfolderBase]: 18119/24918 cut-off events. [2025-03-09 01:22:31,996 INFO L125 PetriNetUnfolderBase]: For 1257887/1257887 co-relation queries the response was YES. [2025-03-09 01:22:32,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277600 conditions, 24918 events. 18119/24918 cut-off events. For 1257887/1257887 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 138145 event pairs, 1095 based on Foata normal form. 446/25362 useless extension candidates. Maximal degree in co-relation 277215. Up to 8279 conditions per place. [2025-03-09 01:22:32,563 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 2008 selfloop transitions, 1607 changer transitions 21/3637 dead transitions. [2025-03-09 01:22:32,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 3637 transitions, 85714 flow [2025-03-09 01:22:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-09 01:22:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-09 01:22:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 321 transitions. [2025-03-09 01:22:32,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2025-03-09 01:22:32,565 INFO L175 Difference]: Start difference. First operand has 375 places, 2003 transitions, 38941 flow. Second operand 24 states and 321 transitions. [2025-03-09 01:22:32,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 3637 transitions, 85714 flow [2025-03-09 01:22:50,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 3637 transitions, 76923 flow, removed 4250 selfloop flow, removed 7 redundant places. [2025-03-09 01:22:50,740 INFO L231 Difference]: Finished difference. Result has 407 places, 2719 transitions, 55410 flow [2025-03-09 01:22:50,742 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=33749, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2003, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=975, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=55410, PETRI_PLACES=407, PETRI_TRANSITIONS=2719} [2025-03-09 01:22:50,742 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2025-03-09 01:22:50,742 INFO L471 AbstractCegarLoop]: Abstraction has has 407 places, 2719 transitions, 55410 flow [2025-03-09 01:22:50,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:50,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:50,743 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 01:22:50,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-09 01:22:50,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:50,943 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-09 01:22:50,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -51057426, now seen corresponding path program 13 times [2025-03-09 01:22:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510356125] [2025-03-09 01:22:50,944 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:22:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:50,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:22:50,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:50,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:50,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510356125] [2025-03-09 01:22:51,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510356125] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 01:22:51,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742741756] [2025-03-09 01:22:51,009 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 01:22:51,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 01:22:51,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:22:51,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 01:22:51,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-09 01:22:51,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-09 01:22:51,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-09 01:22:51,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:22:51,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:51,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-09 01:22:51,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 01:22:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:51,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 01:22:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 01:22:51,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742741756] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 01:22:51,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 01:22:51,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2025-03-09 01:22:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236994237] [2025-03-09 01:22:51,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 01:22:51,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-09 01:22:51,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:51,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-09 01:22:51,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-03-09 01:22:51,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-09 01:22:51,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 2719 transitions, 55410 flow. Second operand has 15 states, 15 states have (on average 8.0) internal successors, (120), 15 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 01:22:51,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:51,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-09 01:22:51,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:23:06,642 INFO L124 PetriNetUnfolderBase]: 21835/30046 cut-off events. [2025-03-09 01:23:06,642 INFO L125 PetriNetUnfolderBase]: For 1496540/1496540 co-relation queries the response was YES.