./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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-comm.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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:24:21,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:24:21,514 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:24:21,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:24:21,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:24:21,550 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:24:21,551 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:24:21,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:24:21,552 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:24:21,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:24:21,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:24:21,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:24:21,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:24:21,556 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:24:21,557 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:24:21,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:24:21,557 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:24:21,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:24:21,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:24:21,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:24:21,558 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:24:21,559 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:24:21,559 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:24:21,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:24:21,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:24:21,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:24:21,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:24:21,561 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:24:21,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:24:21,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:24:21,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:24:21,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:24:21,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:24:21,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:24:21,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:24:21,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:24:21,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:24:21,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-11-12 16:24:21,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:24:21,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:24:21,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:24:21,825 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:24:21,825 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:24:21,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-12 16:24:23,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:24:23,327 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:24:23,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-12 16:24:23,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47cb6e10c/e40c7bfe09a74f26b71e9e148203c2e3/FLAG89a10a46c [2024-11-12 16:24:23,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47cb6e10c/e40c7bfe09a74f26b71e9e148203c2e3 [2024-11-12 16:24:23,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:24:23,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:24:23,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:24:23,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:24:23,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:24:23,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602b6a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23, skipping insertion in model container [2024-11-12 16:24:23,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:24:23,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:24:23,888 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:24:23,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:24:23,918 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:24:23,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23 WrapperNode [2024-11-12 16:24:23,919 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:24:23,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:24:23,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:24:23,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:24:23,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,939 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-12 16:24:23,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:24:23,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:24:23,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:24:23,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:24:23,947 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,955 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]. [2024-11-12 16:24:23,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,958 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:24:23,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:24:23,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:24:23,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:24:23,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (1/1) ... [2024-11-12 16:24:23,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:24:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:23,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 16:24:24,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 16:24:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:24:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:24:24,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:24:24,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:24:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:24:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:24:24,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:24:24,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:24:24,042 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:24:24,134 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:24:24,136 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:24:24,288 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:24:24,288 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:24:24,353 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:24:24,353 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:24:24,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:24 BoogieIcfgContainer [2024-11-12 16:24:24,353 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:24:24,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:24:24,355 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:24:24,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:24:24,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:24:23" (1/3) ... [2024-11-12 16:24:24,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469398ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:24, skipping insertion in model container [2024-11-12 16:24:24,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:24:23" (2/3) ... [2024-11-12 16:24:24,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469398ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:24:24, skipping insertion in model container [2024-11-12 16:24:24,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:24:24" (3/3) ... [2024-11-12 16:24:24,359 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-11-12 16:24:24,371 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:24:24,371 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:24:24,371 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:24:24,411 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:24:24,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-12 16:24:24,467 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-12 16:24:24,467 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:24:24,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-12 16:24:24,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-12 16:24:24,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-12 16:24:24,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:24:24,491 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;@10839b6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:24:24,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:24:24,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:24:24,501 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-12 16:24:24,502 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:24:24,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:24,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:24,503 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:24,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:24,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1555143576, now seen corresponding path program 1 times [2024-11-12 16:24:24,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162557859] [2024-11-12 16:24:24,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:24,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:24,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162557859] [2024-11-12 16:24:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162557859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:24:24,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:24:24,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:24:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818862899] [2024-11-12 16:24:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:24:24,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:24:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:24:25,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:24:25,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:25,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-12 16:24:25,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:25,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:25,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:25,084 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-11-12 16:24:25,085 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 16:24:25,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-11-12 16:24:25,087 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-11-12 16:24:25,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-11-12 16:24:25,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:24:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:24:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-11-12 16:24:25,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-12 16:24:25,098 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-11-12 16:24:25,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-11-12 16:24:25,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:24:25,102 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-12 16:24:25,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-11-12 16:24:25,107 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-12 16:24:25,108 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-12 16:24:25,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2024-11-12 16:24:25,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:25,120 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:25,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:24:25,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:25,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 546641926, now seen corresponding path program 1 times [2024-11-12 16:24:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672984963] [2024-11-12 16:24:25,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:25,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:25,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672984963] [2024-11-12 16:24:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672984963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:25,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766897028] [2024-11-12 16:24:25,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:25,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:25,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:25,484 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) [2024-11-12 16:24:25,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:24:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:25,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 16:24:25,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:25,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:25,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766897028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:25,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:25,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-12 16:24:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927166662] [2024-11-12 16:24:25,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:25,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:24:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:24:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:24:25,844 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:25,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2024-11-12 16:24:25,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:25,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:25,987 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-11-12 16:24:25,987 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-12 16:24:25,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 349 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-11-12 16:24:25,988 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-11-12 16:24:25,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-11-12 16:24:25,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:24:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:24:25,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-12 16:24:25,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-12 16:24:25,992 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-11-12 16:24:25,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-11-12 16:24:25,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:24:25,994 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-11-12 16:24:25,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-11-12 16:24:25,996 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-12 16:24:25,996 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-11-12 16:24:25,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 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) [2024-11-12 16:24:25,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:25,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:26,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:24:26,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:26,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:26,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1014487161, now seen corresponding path program 1 times [2024-11-12 16:24:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:26,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650795005] [2024-11-12 16:24:26,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:26,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:26,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650795005] [2024-11-12 16:24:26,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650795005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:26,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442320076] [2024-11-12 16:24:26,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:26,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:26,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:26,458 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) [2024-11-12 16:24:26,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:24:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:26,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 16:24:26,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:26,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442320076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:26,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:26,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-12 16:24:26,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838111655] [2024-11-12 16:24:26,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:26,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:24:26,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:24:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:24:26,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:26,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:24:26,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:26,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:26,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:26,788 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-11-12 16:24:26,788 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-12 16:24:26,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 298 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place. [2024-11-12 16:24:26,790 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-11-12 16:24:26,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-11-12 16:24:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 16:24:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 16:24:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-11-12 16:24:26,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-12 16:24:26,791 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-11-12 16:24:26,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-11-12 16:24:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-12 16:24:26,792 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-11-12 16:24:26,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-11-12 16:24:26,793 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-12 16:24:26,793 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-11-12 16:24:26,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:24:26,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:26,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:26,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:24:26,997 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,SelfDestructingSolverStorable2 [2024-11-12 16:24:26,998 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:26,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1697698596, now seen corresponding path program 2 times [2024-11-12 16:24:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841165107] [2024-11-12 16:24:26,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:27,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841165107] [2024-11-12 16:24:27,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841165107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:27,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496877723] [2024-11-12 16:24:27,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:27,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:27,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:27,212 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) [2024-11-12 16:24:27,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:24:27,258 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:27,258 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:27,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 16:24:27,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496877723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:27,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:27,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-12 16:24:27,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222242876] [2024-11-12 16:24:27,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:27,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:24:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:24:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:24:27,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:27,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-12 16:24:27,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:27,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:27,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:27,551 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-11-12 16:24:27,552 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-12 16:24:27,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 581 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place. [2024-11-12 16:24:27,556 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-11-12 16:24:27,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-11-12 16:24:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:24:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:24:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-12 16:24:27,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-12 16:24:27,559 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-11-12 16:24:27,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-11-12 16:24:27,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-12 16:24:27,561 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-11-12 16:24:27,561 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-11-12 16:24:27,563 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-11-12 16:24:27,563 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-11-12 16:24:27,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-12 16:24:27,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:27,564 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:27,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:27,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:27,765 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:27,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1334400628, now seen corresponding path program 3 times [2024-11-12 16:24:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950957758] [2024-11-12 16:24:27,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950957758] [2024-11-12 16:24:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950957758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:27,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255453719] [2024-11-12 16:24:27,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:27,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:27,997 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) [2024-11-12 16:24:27,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:24:28,041 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:28,041 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:28,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 16:24:28,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:28,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:28,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255453719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:28,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:28,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-12 16:24:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231732143] [2024-11-12 16:24:28,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:28,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 16:24:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 16:24:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-12 16:24:28,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:28,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2024-11-12 16:24:28,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:28,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:28,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:28,335 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-11-12 16:24:28,336 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-12 16:24:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place. [2024-11-12 16:24:28,338 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-11-12 16:24:28,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-11-12 16:24:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:24:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:24:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-12 16:24:28,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 16:24:28,340 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-11-12 16:24:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-11-12 16:24:28,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-11-12 16:24:28,345 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-11-12 16:24:28,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-12 16:24:28,347 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-11-12 16:24:28,347 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-11-12 16:24:28,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 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) [2024-11-12 16:24:28,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:28,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:28,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:24:28,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:28,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:28,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1328110415, now seen corresponding path program 2 times [2024-11-12 16:24:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434216495] [2024-11-12 16:24:28,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:28,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434216495] [2024-11-12 16:24:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434216495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874457226] [2024-11-12 16:24:28,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:28,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:28,714 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) [2024-11-12 16:24:28,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:24:28,753 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:28,754 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:28,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 16:24:28,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:28,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874457226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:29,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 13 [2024-11-12 16:24:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657330001] [2024-11-12 16:24:29,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:29,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 16:24:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:29,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 16:24:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-12 16:24:29,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:29,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 232 flow. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2024-11-12 16:24:29,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:29,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:29,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:29,166 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2024-11-12 16:24:29,166 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-11-12 16:24:29,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 317 events. 173/317 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1184 event pairs, 24 based on Foata normal form. 2/315 useless extension candidates. Maximal degree in co-relation 1080. Up to 223 conditions per place. [2024-11-12 16:24:29,168 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 55 selfloop transitions, 26 changer transitions 7/89 dead transitions. [2024-11-12 16:24:29,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 657 flow [2024-11-12 16:24:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 16:24:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 16:24:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-11-12 16:24:29,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-12 16:24:29,170 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 12 states and 116 transitions. [2024-11-12 16:24:29,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 657 flow [2024-11-12 16:24:29,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 595 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-12 16:24:29,174 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 414 flow [2024-11-12 16:24:29,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=414, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2024-11-12 16:24:29,174 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 37 predicate places. [2024-11-12 16:24:29,174 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 414 flow [2024-11-12 16:24:29,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2024-11-12 16:24:29,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:29,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:29,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:24:29,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:29,376 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:29,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 599699803, now seen corresponding path program 3 times [2024-11-12 16:24:29,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:29,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879712011] [2024-11-12 16:24:29,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:29,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879712011] [2024-11-12 16:24:29,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879712011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402440571] [2024-11-12 16:24:29,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:29,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:29,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:29,541 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) [2024-11-12 16:24:29,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:24:29,582 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:29,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:29,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 16:24:29,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:29,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402440571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:29,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:29,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-12 16:24:29,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876940820] [2024-11-12 16:24:29,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:29,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:24:29,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:29,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:24:29,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:24:29,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:29,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 414 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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) [2024-11-12 16:24:29,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:29,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:29,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:29,982 INFO L124 PetriNetUnfolderBase]: 204/377 cut-off events. [2024-11-12 16:24:29,982 INFO L125 PetriNetUnfolderBase]: For 1079/1079 co-relation queries the response was YES. [2024-11-12 16:24:29,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 377 events. 204/377 cut-off events. For 1079/1079 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1508 event pairs, 34 based on Foata normal form. 3/378 useless extension candidates. Maximal degree in co-relation 1471. Up to 268 conditions per place. [2024-11-12 16:24:29,995 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 62 selfloop transitions, 25 changer transitions 7/95 dead transitions. [2024-11-12 16:24:29,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 809 flow [2024-11-12 16:24:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 16:24:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 16:24:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-11-12 16:24:29,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-11-12 16:24:29,997 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 414 flow. Second operand 10 states and 97 transitions. [2024-11-12 16:24:29,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 809 flow [2024-11-12 16:24:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 732 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-11-12 16:24:30,004 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 485 flow [2024-11-12 16:24:30,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-11-12 16:24:30,004 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 46 predicate places. [2024-11-12 16:24:30,004 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 485 flow [2024-11-12 16:24:30,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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) [2024-11-12 16:24:30,005 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:30,005 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:30,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:30,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:30,211 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:30,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash -794707811, now seen corresponding path program 1 times [2024-11-12 16:24:30,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003952078] [2024-11-12 16:24:30,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:30,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:30,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003952078] [2024-11-12 16:24:30,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003952078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:30,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110889677] [2024-11-12 16:24:30,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:30,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:30,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:30,543 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) [2024-11-12 16:24:30,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:24:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:30,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:30,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:30,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110889677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:31,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:31,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:24:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734784446] [2024-11-12 16:24:31,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:31,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:31,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:31,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:31,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 485 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:31,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:31,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:31,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:32,138 INFO L124 PetriNetUnfolderBase]: 274/524 cut-off events. [2024-11-12 16:24:32,139 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-11-12 16:24:32,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 524 events. 274/524 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2448 event pairs, 21 based on Foata normal form. 3/523 useless extension candidates. Maximal degree in co-relation 1995. Up to 247 conditions per place. [2024-11-12 16:24:32,146 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 85 selfloop transitions, 60 changer transitions 31/177 dead transitions. [2024-11-12 16:24:32,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 177 transitions, 1345 flow [2024-11-12 16:24:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 16:24:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 16:24:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-11-12 16:24:32,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-11-12 16:24:32,147 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 485 flow. Second operand 24 states and 223 transitions. [2024-11-12 16:24:32,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 177 transitions, 1345 flow [2024-11-12 16:24:32,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 177 transitions, 1280 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-11-12 16:24:32,155 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 767 flow [2024-11-12 16:24:32,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=767, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2024-11-12 16:24:32,156 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 76 predicate places. [2024-11-12 16:24:32,156 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 767 flow [2024-11-12 16:24:32,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:32,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:32,156 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:32,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:32,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:32,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:32,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1450757137, now seen corresponding path program 2 times [2024-11-12 16:24:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:32,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641917459] [2024-11-12 16:24:32,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:32,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641917459] [2024-11-12 16:24:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641917459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404169989] [2024-11-12 16:24:32,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:32,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:32,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:32,783 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) [2024-11-12 16:24:32,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 16:24:32,944 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:32,944 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:32,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:32,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:33,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:33,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404169989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:33,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:33,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:24:33,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412262482] [2024-11-12 16:24:33,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:33,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:33,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:33,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:33,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 767 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:33,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:33,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:33,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:34,573 INFO L124 PetriNetUnfolderBase]: 321/641 cut-off events. [2024-11-12 16:24:34,574 INFO L125 PetriNetUnfolderBase]: For 4593/4593 co-relation queries the response was YES. [2024-11-12 16:24:34,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 641 events. 321/641 cut-off events. For 4593/4593 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3299 event pairs, 21 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 3051. Up to 279 conditions per place. [2024-11-12 16:24:34,578 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 100 selfloop transitions, 90 changer transitions 19/210 dead transitions. [2024-11-12 16:24:34,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 210 transitions, 2053 flow [2024-11-12 16:24:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 16:24:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 16:24:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 270 transitions. [2024-11-12 16:24:34,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-12 16:24:34,580 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 767 flow. Second operand 30 states and 270 transitions. [2024-11-12 16:24:34,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 210 transitions, 2053 flow [2024-11-12 16:24:34,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 210 transitions, 1821 flow, removed 94 selfloop flow, removed 12 redundant places. [2024-11-12 16:24:34,608 INFO L231 Difference]: Finished difference. Result has 119 places, 136 transitions, 1306 flow [2024-11-12 16:24:34,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1306, PETRI_PLACES=119, PETRI_TRANSITIONS=136} [2024-11-12 16:24:34,611 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-11-12 16:24:34,611 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 136 transitions, 1306 flow [2024-11-12 16:24:34,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:34,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:34,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:34,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 16:24:34,815 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,SelfDestructingSolverStorable8 [2024-11-12 16:24:34,817 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:34,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1533874027, now seen corresponding path program 3 times [2024-11-12 16:24:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:34,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114306066] [2024-11-12 16:24:34,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:34,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114306066] [2024-11-12 16:24:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114306066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:35,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603907730] [2024-11-12 16:24:35,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:35,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:35,133 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) [2024-11-12 16:24:35,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 16:24:35,194 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:35,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:35,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:35,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:35,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:35,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603907730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:35,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:35,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:24:35,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533458304] [2024-11-12 16:24:35,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:35,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:35,765 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:35,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 136 transitions, 1306 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:35,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:35,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:35,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:36,725 INFO L124 PetriNetUnfolderBase]: 325/635 cut-off events. [2024-11-12 16:24:36,726 INFO L125 PetriNetUnfolderBase]: For 4204/4204 co-relation queries the response was YES. [2024-11-12 16:24:36,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3341 conditions, 635 events. 325/635 cut-off events. For 4204/4204 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3207 event pairs, 21 based on Foata normal form. 5/636 useless extension candidates. Maximal degree in co-relation 3209. Up to 291 conditions per place. [2024-11-12 16:24:36,730 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 89 selfloop transitions, 94 changer transitions 16/200 dead transitions. [2024-11-12 16:24:36,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 200 transitions, 2047 flow [2024-11-12 16:24:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 16:24:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 16:24:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 226 transitions. [2024-11-12 16:24:36,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.452 [2024-11-12 16:24:36,732 INFO L175 Difference]: Start difference. First operand has 119 places, 136 transitions, 1306 flow. Second operand 25 states and 226 transitions. [2024-11-12 16:24:36,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 200 transitions, 2047 flow [2024-11-12 16:24:36,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 200 transitions, 1605 flow, removed 195 selfloop flow, removed 14 redundant places. [2024-11-12 16:24:36,749 INFO L231 Difference]: Finished difference. Result has 129 places, 142 transitions, 1215 flow [2024-11-12 16:24:36,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1215, PETRI_PLACES=129, PETRI_TRANSITIONS=142} [2024-11-12 16:24:36,754 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 107 predicate places. [2024-11-12 16:24:36,754 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 142 transitions, 1215 flow [2024-11-12 16:24:36,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:36,754 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:36,754 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:36,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:36,954 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,SelfDestructingSolverStorable9 [2024-11-12 16:24:36,955 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:36,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1930971081, now seen corresponding path program 4 times [2024-11-12 16:24:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:36,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007218524] [2024-11-12 16:24:36,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007218524] [2024-11-12 16:24:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007218524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371808635] [2024-11-12 16:24:37,348 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:24:37,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:37,351 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) [2024-11-12 16:24:37,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:24:37,399 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:24:37,400 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:37,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:37,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:37,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:38,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371808635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:38,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:38,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:38,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026423547] [2024-11-12 16:24:38,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:38,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:38,448 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:38,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 142 transitions, 1215 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:38,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:38,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:38,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:38,975 INFO L124 PetriNetUnfolderBase]: 363/700 cut-off events. [2024-11-12 16:24:38,975 INFO L125 PetriNetUnfolderBase]: For 2197/2197 co-relation queries the response was YES. [2024-11-12 16:24:38,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 700 events. 363/700 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3558 event pairs, 35 based on Foata normal form. 3/695 useless extension candidates. Maximal degree in co-relation 3244. Up to 556 conditions per place. [2024-11-12 16:24:38,984 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 143 selfloop transitions, 46 changer transitions 14/204 dead transitions. [2024-11-12 16:24:38,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 204 transitions, 2018 flow [2024-11-12 16:24:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 16:24:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 16:24:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-11-12 16:24:38,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-12 16:24:38,985 INFO L175 Difference]: Start difference. First operand has 129 places, 142 transitions, 1215 flow. Second operand 18 states and 164 transitions. [2024-11-12 16:24:38,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 204 transitions, 2018 flow [2024-11-12 16:24:38,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 204 transitions, 1788 flow, removed 35 selfloop flow, removed 19 redundant places. [2024-11-12 16:24:38,999 INFO L231 Difference]: Finished difference. Result has 131 places, 163 transitions, 1386 flow [2024-11-12 16:24:38,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1386, PETRI_PLACES=131, PETRI_TRANSITIONS=163} [2024-11-12 16:24:38,999 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 109 predicate places. [2024-11-12 16:24:39,000 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 163 transitions, 1386 flow [2024-11-12 16:24:39,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:39,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:39,000 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:39,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:39,204 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,SelfDestructingSolverStorable10 [2024-11-12 16:24:39,205 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:39,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -498701196, now seen corresponding path program 4 times [2024-11-12 16:24:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:39,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693531436] [2024-11-12 16:24:39,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693531436] [2024-11-12 16:24:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693531436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575971290] [2024-11-12 16:24:39,355 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:24:39,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:39,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:39,358 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) [2024-11-12 16:24:39,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 16:24:39,404 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:24:39,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:39,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 16:24:39,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:39,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575971290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:39,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:39,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-12 16:24:39,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151016409] [2024-11-12 16:24:39,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:39,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 16:24:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 16:24:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-12 16:24:39,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:39,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 163 transitions, 1386 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 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) [2024-11-12 16:24:39,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:39,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:39,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:39,915 INFO L124 PetriNetUnfolderBase]: 355/688 cut-off events. [2024-11-12 16:24:39,916 INFO L125 PetriNetUnfolderBase]: For 2270/2270 co-relation queries the response was YES. [2024-11-12 16:24:39,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 688 events. 355/688 cut-off events. For 2270/2270 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3517 event pairs, 36 based on Foata normal form. 4/684 useless extension candidates. Maximal degree in co-relation 3239. Up to 558 conditions per place. [2024-11-12 16:24:39,920 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 142 selfloop transitions, 30 changer transitions 25/198 dead transitions. [2024-11-12 16:24:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 198 transitions, 1961 flow [2024-11-12 16:24:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 16:24:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 16:24:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-12 16:24:39,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-12 16:24:39,922 INFO L175 Difference]: Start difference. First operand has 131 places, 163 transitions, 1386 flow. Second operand 13 states and 122 transitions. [2024-11-12 16:24:39,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 198 transitions, 1961 flow [2024-11-12 16:24:39,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 198 transitions, 1842 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-11-12 16:24:39,934 INFO L231 Difference]: Finished difference. Result has 138 places, 159 transitions, 1307 flow [2024-11-12 16:24:39,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1307, PETRI_PLACES=138, PETRI_TRANSITIONS=159} [2024-11-12 16:24:39,936 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 116 predicate places. [2024-11-12 16:24:39,936 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 159 transitions, 1307 flow [2024-11-12 16:24:39,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 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) [2024-11-12 16:24:39,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:39,937 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:39,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 16:24:40,141 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,SelfDestructingSolverStorable11 [2024-11-12 16:24:40,142 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:40,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1354805163, now seen corresponding path program 5 times [2024-11-12 16:24:40,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:40,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68907670] [2024-11-12 16:24:40,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:40,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:40,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68907670] [2024-11-12 16:24:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68907670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826979434] [2024-11-12 16:24:40,393 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:24:40,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:40,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:40,398 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) [2024-11-12 16:24:40,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 16:24:40,442 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:40,442 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:40,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:40,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:40,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826979434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:41,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:41,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121371525] [2024-11-12 16:24:41,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:41,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:41,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:41,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 159 transitions, 1307 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:41,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:41,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:41,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:41,963 INFO L124 PetriNetUnfolderBase]: 381/734 cut-off events. [2024-11-12 16:24:41,963 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2024-11-12 16:24:41,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 734 events. 381/734 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3773 event pairs, 33 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 3520. Up to 540 conditions per place. [2024-11-12 16:24:41,968 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 147 selfloop transitions, 60 changer transitions 9/217 dead transitions. [2024-11-12 16:24:41,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 217 transitions, 2233 flow [2024-11-12 16:24:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 16:24:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 16:24:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 168 transitions. [2024-11-12 16:24:41,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-11-12 16:24:41,970 INFO L175 Difference]: Start difference. First operand has 138 places, 159 transitions, 1307 flow. Second operand 19 states and 168 transitions. [2024-11-12 16:24:41,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 217 transitions, 2233 flow [2024-11-12 16:24:41,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 217 transitions, 2111 flow, removed 22 selfloop flow, removed 13 redundant places. [2024-11-12 16:24:41,982 INFO L231 Difference]: Finished difference. Result has 147 places, 177 transitions, 1674 flow [2024-11-12 16:24:41,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1674, PETRI_PLACES=147, PETRI_TRANSITIONS=177} [2024-11-12 16:24:41,984 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-11-12 16:24:41,984 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 177 transitions, 1674 flow [2024-11-12 16:24:41,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:41,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:41,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:42,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 16:24:42,189 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,SelfDestructingSolverStorable12 [2024-11-12 16:24:42,190 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:42,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:42,190 INFO L85 PathProgramCache]: Analyzing trace with hash 434762513, now seen corresponding path program 6 times [2024-11-12 16:24:42,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:42,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832995745] [2024-11-12 16:24:42,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:42,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:42,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832995745] [2024-11-12 16:24:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832995745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618769511] [2024-11-12 16:24:42,406 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:24:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:42,408 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) [2024-11-12 16:24:42,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 16:24:42,462 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:24:42,462 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:42,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:42,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:42,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618769511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:43,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173790975] [2024-11-12 16:24:43,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:43,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:43,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:43,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 177 transitions, 1674 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:43,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:43,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:43,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:43,836 INFO L124 PetriNetUnfolderBase]: 379/738 cut-off events. [2024-11-12 16:24:43,837 INFO L125 PetriNetUnfolderBase]: For 4254/4254 co-relation queries the response was YES. [2024-11-12 16:24:43,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 738 events. 379/738 cut-off events. For 4254/4254 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3856 event pairs, 42 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 3834. Up to 635 conditions per place. [2024-11-12 16:24:43,842 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 165 selfloop transitions, 42 changer transitions 6/214 dead transitions. [2024-11-12 16:24:43,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 214 transitions, 2310 flow [2024-11-12 16:24:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 16:24:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 16:24:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 153 transitions. [2024-11-12 16:24:43,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-12 16:24:43,844 INFO L175 Difference]: Start difference. First operand has 147 places, 177 transitions, 1674 flow. Second operand 18 states and 153 transitions. [2024-11-12 16:24:43,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 214 transitions, 2310 flow [2024-11-12 16:24:43,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 214 transitions, 2064 flow, removed 105 selfloop flow, removed 9 redundant places. [2024-11-12 16:24:43,864 INFO L231 Difference]: Finished difference. Result has 161 places, 185 transitions, 1668 flow [2024-11-12 16:24:43,864 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1668, PETRI_PLACES=161, PETRI_TRANSITIONS=185} [2024-11-12 16:24:43,864 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-11-12 16:24:43,865 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 185 transitions, 1668 flow [2024-11-12 16:24:43,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:43,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:43,865 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:43,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-12 16:24:44,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 16:24:44,066 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:44,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1393115503, now seen corresponding path program 7 times [2024-11-12 16:24:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:44,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813836802] [2024-11-12 16:24:44,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:44,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813836802] [2024-11-12 16:24:44,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813836802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:44,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660602177] [2024-11-12 16:24:44,285 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:24:44,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:44,287 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) [2024-11-12 16:24:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 16:24:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:44,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:44,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:44,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:45,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660602177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:45,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:45,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594233574] [2024-11-12 16:24:45,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:45,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:45,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:45,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:45,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 185 transitions, 1668 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:45,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:45,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:45,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:45,699 INFO L124 PetriNetUnfolderBase]: 389/759 cut-off events. [2024-11-12 16:24:45,700 INFO L125 PetriNetUnfolderBase]: For 4934/4934 co-relation queries the response was YES. [2024-11-12 16:24:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 759 events. 389/759 cut-off events. For 4934/4934 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3982 event pairs, 38 based on Foata normal form. 4/753 useless extension candidates. Maximal degree in co-relation 3949. Up to 630 conditions per place. [2024-11-12 16:24:45,705 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 165 selfloop transitions, 42 changer transitions 10/218 dead transitions. [2024-11-12 16:24:45,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 218 transitions, 2293 flow [2024-11-12 16:24:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:24:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:24:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 131 transitions. [2024-11-12 16:24:45,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-11-12 16:24:45,707 INFO L175 Difference]: Start difference. First operand has 161 places, 185 transitions, 1668 flow. Second operand 15 states and 131 transitions. [2024-11-12 16:24:45,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 218 transitions, 2293 flow [2024-11-12 16:24:45,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 218 transitions, 2181 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-11-12 16:24:45,731 INFO L231 Difference]: Finished difference. Result has 170 places, 188 transitions, 1716 flow [2024-11-12 16:24:45,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1716, PETRI_PLACES=170, PETRI_TRANSITIONS=188} [2024-11-12 16:24:45,733 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 148 predicate places. [2024-11-12 16:24:45,733 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 188 transitions, 1716 flow [2024-11-12 16:24:45,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:45,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:45,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:45,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-12 16:24:45,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:45,938 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:45,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:45,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1294231689, now seen corresponding path program 8 times [2024-11-12 16:24:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820160982] [2024-11-12 16:24:45,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:46,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820160982] [2024-11-12 16:24:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820160982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:46,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838804611] [2024-11-12 16:24:46,178 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:46,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:46,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:46,180 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) [2024-11-12 16:24:46,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 16:24:46,228 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:46,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:46,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:46,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:46,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:47,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838804611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:47,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:47,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:47,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267887776] [2024-11-12 16:24:47,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:47,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:47,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:47,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:47,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:47,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 188 transitions, 1716 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:47,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:47,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:47,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:47,635 INFO L124 PetriNetUnfolderBase]: 404/787 cut-off events. [2024-11-12 16:24:47,635 INFO L125 PetriNetUnfolderBase]: For 6438/6438 co-relation queries the response was YES. [2024-11-12 16:24:47,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4446 conditions, 787 events. 404/787 cut-off events. For 6438/6438 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4136 event pairs, 39 based on Foata normal form. 2/779 useless extension candidates. Maximal degree in co-relation 4309. Up to 635 conditions per place. [2024-11-12 16:24:47,642 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 174 selfloop transitions, 56 changer transitions 8/239 dead transitions. [2024-11-12 16:24:47,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 239 transitions, 2600 flow [2024-11-12 16:24:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 16:24:47,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 16:24:47,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 193 transitions. [2024-11-12 16:24:47,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41956521739130437 [2024-11-12 16:24:47,644 INFO L175 Difference]: Start difference. First operand has 170 places, 188 transitions, 1716 flow. Second operand 23 states and 193 transitions. [2024-11-12 16:24:47,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 239 transitions, 2600 flow [2024-11-12 16:24:47,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 239 transitions, 2475 flow, removed 30 selfloop flow, removed 12 redundant places. [2024-11-12 16:24:47,670 INFO L231 Difference]: Finished difference. Result has 185 places, 197 transitions, 1970 flow [2024-11-12 16:24:47,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1970, PETRI_PLACES=185, PETRI_TRANSITIONS=197} [2024-11-12 16:24:47,670 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 163 predicate places. [2024-11-12 16:24:47,671 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 197 transitions, 1970 flow [2024-11-12 16:24:47,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:47,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:47,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:47,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-12 16:24:47,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 16:24:47,876 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:47,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1271688273, now seen corresponding path program 9 times [2024-11-12 16:24:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23080091] [2024-11-12 16:24:47,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23080091] [2024-11-12 16:24:48,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23080091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32658835] [2024-11-12 16:24:48,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:48,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:48,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:48,134 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) [2024-11-12 16:24:48,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 16:24:48,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:48,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:48,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:48,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:48,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32658835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:48,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112683254] [2024-11-12 16:24:48,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:48,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:48,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:48,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:48,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 197 transitions, 1970 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:48,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:48,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:48,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:49,361 INFO L124 PetriNetUnfolderBase]: 399/766 cut-off events. [2024-11-12 16:24:49,361 INFO L125 PetriNetUnfolderBase]: For 6983/6983 co-relation queries the response was YES. [2024-11-12 16:24:49,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 766 events. 399/766 cut-off events. For 6983/6983 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3964 event pairs, 34 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 4413. Up to 601 conditions per place. [2024-11-12 16:24:49,367 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 154 selfloop transitions, 63 changer transitions 8/226 dead transitions. [2024-11-12 16:24:49,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 226 transitions, 2558 flow [2024-11-12 16:24:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 16:24:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 16:24:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-12 16:24:49,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-12 16:24:49,370 INFO L175 Difference]: Start difference. First operand has 185 places, 197 transitions, 1970 flow. Second operand 17 states and 145 transitions. [2024-11-12 16:24:49,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 226 transitions, 2558 flow [2024-11-12 16:24:49,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 226 transitions, 2272 flow, removed 89 selfloop flow, removed 22 redundant places. [2024-11-12 16:24:49,396 INFO L231 Difference]: Finished difference. Result has 180 places, 198 transitions, 1905 flow [2024-11-12 16:24:49,397 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1905, PETRI_PLACES=180, PETRI_TRANSITIONS=198} [2024-11-12 16:24:49,397 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 158 predicate places. [2024-11-12 16:24:49,397 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 198 transitions, 1905 flow [2024-11-12 16:24:49,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:49,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:49,399 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:49,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 16:24:49,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 16:24:49,600 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:49,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash 16710739, now seen corresponding path program 10 times [2024-11-12 16:24:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:49,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876629272] [2024-11-12 16:24:49,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876629272] [2024-11-12 16:24:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876629272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:49,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055125387] [2024-11-12 16:24:49,947 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:24:49,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:49,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:49,951 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:49,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 16:24:50,054 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:24:50,054 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:50,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:50,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:50,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055125387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:50,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297817159] [2024-11-12 16:24:50,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:50,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:50,751 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:50,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 198 transitions, 1905 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:51,326 INFO L124 PetriNetUnfolderBase]: 426/816 cut-off events. [2024-11-12 16:24:51,327 INFO L125 PetriNetUnfolderBase]: For 7344/7344 co-relation queries the response was YES. [2024-11-12 16:24:51,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 816 events. 426/816 cut-off events. For 7344/7344 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4273 event pairs, 39 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4792. Up to 659 conditions per place. [2024-11-12 16:24:51,334 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 177 selfloop transitions, 56 changer transitions 9/243 dead transitions. [2024-11-12 16:24:51,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 243 transitions, 2799 flow [2024-11-12 16:24:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 16:24:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 16:24:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 172 transitions. [2024-11-12 16:24:51,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-12 16:24:51,335 INFO L175 Difference]: Start difference. First operand has 180 places, 198 transitions, 1905 flow. Second operand 21 states and 172 transitions. [2024-11-12 16:24:51,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 243 transitions, 2799 flow [2024-11-12 16:24:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 243 transitions, 2638 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-11-12 16:24:51,361 INFO L231 Difference]: Finished difference. Result has 189 places, 208 transitions, 2133 flow [2024-11-12 16:24:51,361 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2133, PETRI_PLACES=189, PETRI_TRANSITIONS=208} [2024-11-12 16:24:51,362 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 167 predicate places. [2024-11-12 16:24:51,362 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 208 transitions, 2133 flow [2024-11-12 16:24:51,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:51,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:51,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:51,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-12 16:24:51,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 16:24:51,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:51,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:51,567 INFO L85 PathProgramCache]: Analyzing trace with hash -812480935, now seen corresponding path program 11 times [2024-11-12 16:24:51,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:51,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010343846] [2024-11-12 16:24:51,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:51,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010343846] [2024-11-12 16:24:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010343846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942463912] [2024-11-12 16:24:51,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:24:51,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:51,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:51,806 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:51,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 16:24:51,855 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:51,855 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:51,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:51,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:51,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:52,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942463912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:52,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:52,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400201845] [2024-11-12 16:24:52,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:52,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:52,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:52,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:52,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 208 transitions, 2133 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:52,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:52,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:52,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:53,294 INFO L124 PetriNetUnfolderBase]: 426/815 cut-off events. [2024-11-12 16:24:53,295 INFO L125 PetriNetUnfolderBase]: For 7206/7206 co-relation queries the response was YES. [2024-11-12 16:24:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 815 events. 426/815 cut-off events. For 7206/7206 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4263 event pairs, 40 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4848. Up to 662 conditions per place. [2024-11-12 16:24:53,302 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 182 selfloop transitions, 57 changer transitions 8/248 dead transitions. [2024-11-12 16:24:53,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 248 transitions, 2874 flow [2024-11-12 16:24:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 16:24:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 16:24:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 186 transitions. [2024-11-12 16:24:53,303 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-12 16:24:53,303 INFO L175 Difference]: Start difference. First operand has 189 places, 208 transitions, 2133 flow. Second operand 22 states and 186 transitions. [2024-11-12 16:24:53,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 248 transitions, 2874 flow [2024-11-12 16:24:53,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 248 transitions, 2616 flow, removed 95 selfloop flow, removed 18 redundant places. [2024-11-12 16:24:53,333 INFO L231 Difference]: Finished difference. Result has 193 places, 211 transitions, 2130 flow [2024-11-12 16:24:53,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2130, PETRI_PLACES=193, PETRI_TRANSITIONS=211} [2024-11-12 16:24:53,334 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 171 predicate places. [2024-11-12 16:24:53,334 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 211 transitions, 2130 flow [2024-11-12 16:24:53,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:24:53,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:53,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:53,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-12 16:24:53,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:53,536 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:53,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:53,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1748970377, now seen corresponding path program 12 times [2024-11-12 16:24:53,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:53,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374763391] [2024-11-12 16:24:53,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:53,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374763391] [2024-11-12 16:24:53,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374763391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:53,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772023233] [2024-11-12 16:24:53,768 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:24:53,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:53,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:53,770 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:53,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 16:24:53,820 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:24:53,821 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:53,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:53,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:53,938 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:54,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772023233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:54,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:54,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:54,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708189654] [2024-11-12 16:24:54,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:54,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:54,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:54,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:54,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 211 transitions, 2130 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:54,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:54,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:55,073 INFO L124 PetriNetUnfolderBase]: 453/864 cut-off events. [2024-11-12 16:24:55,073 INFO L125 PetriNetUnfolderBase]: For 8296/8296 co-relation queries the response was YES. [2024-11-12 16:24:55,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 864 events. 453/864 cut-off events. For 8296/8296 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4554 event pairs, 46 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5384. Up to 721 conditions per place. [2024-11-12 16:24:55,080 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 190 selfloop transitions, 54 changer transitions 8/253 dead transitions. [2024-11-12 16:24:55,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 253 transitions, 3142 flow [2024-11-12 16:24:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 16:24:55,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 16:24:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-12 16:24:55,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-11-12 16:24:55,081 INFO L175 Difference]: Start difference. First operand has 193 places, 211 transitions, 2130 flow. Second operand 17 states and 143 transitions. [2024-11-12 16:24:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 253 transitions, 3142 flow [2024-11-12 16:24:55,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 253 transitions, 2915 flow, removed 77 selfloop flow, removed 19 redundant places. [2024-11-12 16:24:55,108 INFO L231 Difference]: Finished difference. Result has 194 places, 224 transitions, 2372 flow [2024-11-12 16:24:55,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2372, PETRI_PLACES=194, PETRI_TRANSITIONS=224} [2024-11-12 16:24:55,109 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 172 predicate places. [2024-11-12 16:24:55,109 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 224 transitions, 2372 flow [2024-11-12 16:24:55,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:55,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:55,110 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:55,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-12 16:24:55,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:55,314 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:55,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1832087267, now seen corresponding path program 13 times [2024-11-12 16:24:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942820434] [2024-11-12 16:24:55,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:55,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942820434] [2024-11-12 16:24:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942820434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:55,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631025591] [2024-11-12 16:24:55,532 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:24:55,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:55,536 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:55,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-12 16:24:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:55,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:55,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:55,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631025591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:56,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:56,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:24:56,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269737360] [2024-11-12 16:24:56,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:56,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:24:56,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:56,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:24:56,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:24:56,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:56,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 224 transitions, 2372 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:56,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:56,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:56,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:57,240 INFO L124 PetriNetUnfolderBase]: 453/868 cut-off events. [2024-11-12 16:24:57,241 INFO L125 PetriNetUnfolderBase]: For 9047/9047 co-relation queries the response was YES. [2024-11-12 16:24:57,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 868 events. 453/868 cut-off events. For 9047/9047 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4604 event pairs, 45 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5387. Up to 723 conditions per place. [2024-11-12 16:24:57,247 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 193 selfloop transitions, 57 changer transitions 7/258 dead transitions. [2024-11-12 16:24:57,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 258 transitions, 3198 flow [2024-11-12 16:24:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 16:24:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 16:24:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-11-12 16:24:57,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-11-12 16:24:57,249 INFO L175 Difference]: Start difference. First operand has 194 places, 224 transitions, 2372 flow. Second operand 18 states and 154 transitions. [2024-11-12 16:24:57,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 258 transitions, 3198 flow [2024-11-12 16:24:57,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 258 transitions, 2885 flow, removed 139 selfloop flow, removed 9 redundant places. [2024-11-12 16:24:57,283 INFO L231 Difference]: Finished difference. Result has 203 places, 229 transitions, 2383 flow [2024-11-12 16:24:57,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2383, PETRI_PLACES=203, PETRI_TRANSITIONS=229} [2024-11-12 16:24:57,284 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 181 predicate places. [2024-11-12 16:24:57,284 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 229 transitions, 2383 flow [2024-11-12 16:24:57,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:24:57,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:57,284 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:57,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-12 16:24:57,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-12 16:24:57,489 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:57,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash -343539213, now seen corresponding path program 14 times [2024-11-12 16:24:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:57,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848017410] [2024-11-12 16:24:57,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848017410] [2024-11-12 16:24:57,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848017410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:57,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388172103] [2024-11-12 16:24:57,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:24:57,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:57,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:57,707 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:57,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-12 16:24:57,784 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:24:57,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:57,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:57,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:57,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388172103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:58,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:24:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400441494] [2024-11-12 16:24:58,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:58,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:58,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:58,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 229 transitions, 2383 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:58,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:58,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:24:58,777 INFO L124 PetriNetUnfolderBase]: 508/980 cut-off events. [2024-11-12 16:24:58,777 INFO L125 PetriNetUnfolderBase]: For 12200/12200 co-relation queries the response was YES. [2024-11-12 16:24:58,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 980 events. 508/980 cut-off events. For 12200/12200 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5467 event pairs, 40 based on Foata normal form. 3/971 useless extension candidates. Maximal degree in co-relation 6143. Up to 747 conditions per place. [2024-11-12 16:24:58,785 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 212 selfloop transitions, 75 changer transitions 19/307 dead transitions. [2024-11-12 16:24:58,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 307 transitions, 3926 flow [2024-11-12 16:24:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-12 16:24:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-12 16:24:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 196 transitions. [2024-11-12 16:24:58,788 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-11-12 16:24:58,788 INFO L175 Difference]: Start difference. First operand has 203 places, 229 transitions, 2383 flow. Second operand 22 states and 196 transitions. [2024-11-12 16:24:58,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 307 transitions, 3926 flow [2024-11-12 16:24:58,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 307 transitions, 3672 flow, removed 93 selfloop flow, removed 14 redundant places. [2024-11-12 16:24:58,830 INFO L231 Difference]: Finished difference. Result has 213 places, 260 transitions, 2948 flow [2024-11-12 16:24:58,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2948, PETRI_PLACES=213, PETRI_TRANSITIONS=260} [2024-11-12 16:24:58,830 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 191 predicate places. [2024-11-12 16:24:58,830 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 260 transitions, 2948 flow [2024-11-12 16:24:58,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:24:58,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:24:58,831 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:24:58,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-12 16:24:59,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 16:24:59,032 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:24:59,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:24:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 437281723, now seen corresponding path program 15 times [2024-11-12 16:24:59,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:24:59,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088648366] [2024-11-12 16:24:59,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:24:59,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:24:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:24:59,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:59,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:24:59,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088648366] [2024-11-12 16:24:59,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088648366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:24:59,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726998102] [2024-11-12 16:24:59,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:24:59,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:24:59,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:24:59,301 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:24:59,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-12 16:24:59,343 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:24:59,344 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:24:59,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:24:59,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:24:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:59,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:24:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:24:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726998102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:24:59,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:24:59,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:24:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918111901] [2024-11-12 16:24:59,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:24:59,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:24:59,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:24:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:24:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:24:59,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:24:59,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 260 transitions, 2948 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2024-11-12 16:24:59,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:24:59,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:24:59,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:00,627 INFO L124 PetriNetUnfolderBase]: 533/1020 cut-off events. [2024-11-12 16:25:00,628 INFO L125 PetriNetUnfolderBase]: For 13213/13213 co-relation queries the response was YES. [2024-11-12 16:25:00,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 1020 events. 533/1020 cut-off events. For 13213/13213 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5681 event pairs, 39 based on Foata normal form. 3/1009 useless extension candidates. Maximal degree in co-relation 6730. Up to 745 conditions per place. [2024-11-12 16:25:00,636 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 211 selfloop transitions, 95 changer transitions 13/320 dead transitions. [2024-11-12 16:25:00,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 320 transitions, 4296 flow [2024-11-12 16:25:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-12 16:25:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-12 16:25:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 211 transitions. [2024-11-12 16:25:00,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4395833333333333 [2024-11-12 16:25:00,637 INFO L175 Difference]: Start difference. First operand has 213 places, 260 transitions, 2948 flow. Second operand 24 states and 211 transitions. [2024-11-12 16:25:00,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 320 transitions, 4296 flow [2024-11-12 16:25:00,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 320 transitions, 3802 flow, removed 235 selfloop flow, removed 9 redundant places. [2024-11-12 16:25:00,686 INFO L231 Difference]: Finished difference. Result has 228 places, 274 transitions, 3068 flow [2024-11-12 16:25:00,687 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3068, PETRI_PLACES=228, PETRI_TRANSITIONS=274} [2024-11-12 16:25:00,687 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 206 predicate places. [2024-11-12 16:25:00,687 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 274 transitions, 3068 flow [2024-11-12 16:25:00,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2024-11-12 16:25:00,688 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:00,688 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:00,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:00,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:00,889 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:00,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash 515929963, now seen corresponding path program 16 times [2024-11-12 16:25:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673812186] [2024-11-12 16:25:00,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:01,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673812186] [2024-11-12 16:25:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673812186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715144837] [2024-11-12 16:25:01,157 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:25:01,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:01,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:01,161 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:01,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-12 16:25:01,208 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:25:01,208 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:01,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:25:01,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:01,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715144837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:01,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:01,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-12 16:25:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903319543] [2024-11-12 16:25:01,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:01,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-12 16:25:01,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:01,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-12 16:25:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-12 16:25:01,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:01,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 274 transitions, 3068 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:25:01,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:01,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:01,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:02,651 INFO L124 PetriNetUnfolderBase]: 528/1015 cut-off events. [2024-11-12 16:25:02,652 INFO L125 PetriNetUnfolderBase]: For 11935/11935 co-relation queries the response was YES. [2024-11-12 16:25:02,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6580 conditions, 1015 events. 528/1015 cut-off events. For 11935/11935 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5692 event pairs, 39 based on Foata normal form. 3/998 useless extension candidates. Maximal degree in co-relation 6408. Up to 749 conditions per place. [2024-11-12 16:25:02,659 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 214 selfloop transitions, 98 changer transitions 12/325 dead transitions. [2024-11-12 16:25:02,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 325 transitions, 4131 flow [2024-11-12 16:25:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 16:25:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 16:25:02,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 225 transitions. [2024-11-12 16:25:02,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-11-12 16:25:02,663 INFO L175 Difference]: Start difference. First operand has 228 places, 274 transitions, 3068 flow. Second operand 26 states and 225 transitions. [2024-11-12 16:25:02,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 325 transitions, 4131 flow [2024-11-12 16:25:02,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 325 transitions, 3685 flow, removed 191 selfloop flow, removed 10 redundant places. [2024-11-12 16:25:02,709 INFO L231 Difference]: Finished difference. Result has 243 places, 279 transitions, 3108 flow [2024-11-12 16:25:02,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3108, PETRI_PLACES=243, PETRI_TRANSITIONS=279} [2024-11-12 16:25:02,710 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 221 predicate places. [2024-11-12 16:25:02,710 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 279 transitions, 3108 flow [2024-11-12 16:25:02,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2024-11-12 16:25:02,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:02,710 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:02,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-12 16:25:02,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:02,911 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:02,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 972618091, now seen corresponding path program 17 times [2024-11-12 16:25:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:02,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606003197] [2024-11-12 16:25:02,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:02,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606003197] [2024-11-12 16:25:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606003197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589212887] [2024-11-12 16:25:03,091 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:25:03,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:03,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:03,093 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:03,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-12 16:25:03,163 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:25:03,163 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:03,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:25:03,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:03,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:03,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589212887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:03,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:25:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870420089] [2024-11-12 16:25:03,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:03,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:25:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:25:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:25:03,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:03,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 279 transitions, 3108 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:25:03,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:03,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:03,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:04,245 INFO L124 PetriNetUnfolderBase]: 529/1022 cut-off events. [2024-11-12 16:25:04,246 INFO L125 PetriNetUnfolderBase]: For 9467/9467 co-relation queries the response was YES. [2024-11-12 16:25:04,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 1022 events. 529/1022 cut-off events. For 9467/9467 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5737 event pairs, 45 based on Foata normal form. 3/1005 useless extension candidates. Maximal degree in co-relation 6384. Up to 925 conditions per place. [2024-11-12 16:25:04,253 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 260 selfloop transitions, 39 changer transitions 7/307 dead transitions. [2024-11-12 16:25:04,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 307 transitions, 3909 flow [2024-11-12 16:25:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 16:25:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 16:25:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2024-11-12 16:25:04,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-12 16:25:04,254 INFO L175 Difference]: Start difference. First operand has 243 places, 279 transitions, 3108 flow. Second operand 16 states and 132 transitions. [2024-11-12 16:25:04,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 307 transitions, 3909 flow [2024-11-12 16:25:04,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 307 transitions, 3586 flow, removed 105 selfloop flow, removed 19 redundant places. [2024-11-12 16:25:04,300 INFO L231 Difference]: Finished difference. Result has 241 places, 282 transitions, 2952 flow [2024-11-12 16:25:04,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2952, PETRI_PLACES=241, PETRI_TRANSITIONS=282} [2024-11-12 16:25:04,301 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 219 predicate places. [2024-11-12 16:25:04,301 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 282 transitions, 2952 flow [2024-11-12 16:25:04,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 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) [2024-11-12 16:25:04,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:04,302 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:04,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:04,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-12 16:25:04,506 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:04,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash -361973239, now seen corresponding path program 18 times [2024-11-12 16:25:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830746647] [2024-11-12 16:25:04,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830746647] [2024-11-12 16:25:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830746647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108889538] [2024-11-12 16:25:04,684 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:25:04,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:04,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:04,685 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:04,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-12 16:25:04,744 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:25:04,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:04,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 16:25:04,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:04,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:05,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108889538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:05,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-12 16:25:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862395273] [2024-11-12 16:25:05,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:05,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 16:25:05,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 16:25:05,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-12 16:25:05,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:05,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 282 transitions, 2952 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:25:05,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:05,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:09,577 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 [] [2024-11-12 16:25:13,766 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 [] [2024-11-12 16:25:14,060 INFO L124 PetriNetUnfolderBase]: 532/1031 cut-off events. [2024-11-12 16:25:14,060 INFO L125 PetriNetUnfolderBase]: For 8045/8045 co-relation queries the response was YES. [2024-11-12 16:25:14,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 1031 events. 532/1031 cut-off events. For 8045/8045 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5823 event pairs, 36 based on Foata normal form. 3/1010 useless extension candidates. Maximal degree in co-relation 6256. Up to 833 conditions per place. [2024-11-12 16:25:14,068 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 243 selfloop transitions, 71 changer transitions 15/330 dead transitions. [2024-11-12 16:25:14,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 330 transitions, 3872 flow [2024-11-12 16:25:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-12 16:25:14,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-12 16:25:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 192 transitions. [2024-11-12 16:25:14,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41739130434782606 [2024-11-12 16:25:14,070 INFO L175 Difference]: Start difference. First operand has 241 places, 282 transitions, 2952 flow. Second operand 23 states and 192 transitions. [2024-11-12 16:25:14,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 330 transitions, 3872 flow [2024-11-12 16:25:14,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 330 transitions, 3751 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-11-12 16:25:14,112 INFO L231 Difference]: Finished difference. Result has 259 places, 287 transitions, 3095 flow [2024-11-12 16:25:14,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3095, PETRI_PLACES=259, PETRI_TRANSITIONS=287} [2024-11-12 16:25:14,113 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 237 predicate places. [2024-11-12 16:25:14,113 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 287 transitions, 3095 flow [2024-11-12 16:25:14,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 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) [2024-11-12 16:25:14,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:14,113 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:14,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:14,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 16:25:14,318 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:14,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 47257395, now seen corresponding path program 19 times [2024-11-12 16:25:14,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321686392] [2024-11-12 16:25:14,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:14,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321686392] [2024-11-12 16:25:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321686392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954720080] [2024-11-12 16:25:14,643 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:25:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:14,644 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:14,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-12 16:25:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:14,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 16:25:14,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:15,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:17,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954720080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:17,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:17,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-12 16:25:17,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338323865] [2024-11-12 16:25:17,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:17,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-12 16:25:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:17,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-12 16:25:17,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-12 16:25:17,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:17,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 287 transitions, 3095 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 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) [2024-11-12 16:25:17,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:17,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:19,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:25:24,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:25:30,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:25:34,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:25:39,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 16:25:43,078 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 [] [2024-11-12 16:25:43,631 INFO L124 PetriNetUnfolderBase]: 637/1217 cut-off events. [2024-11-12 16:25:43,632 INFO L125 PetriNetUnfolderBase]: For 16975/16975 co-relation queries the response was YES. [2024-11-12 16:25:43,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 1217 events. 637/1217 cut-off events. For 16975/16975 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7044 event pairs, 26 based on Foata normal form. 4/1195 useless extension candidates. Maximal degree in co-relation 8379. Up to 824 conditions per place. [2024-11-12 16:25:43,643 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 268 selfloop transitions, 109 changer transitions 22/400 dead transitions. [2024-11-12 16:25:43,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 400 transitions, 5164 flow [2024-11-12 16:25:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-12 16:25:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-12 16:25:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 294 transitions. [2024-11-12 16:25:43,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-11-12 16:25:43,645 INFO L175 Difference]: Start difference. First operand has 259 places, 287 transitions, 3095 flow. Second operand 33 states and 294 transitions. [2024-11-12 16:25:43,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 400 transitions, 5164 flow [2024-11-12 16:25:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 400 transitions, 5029 flow, removed 33 selfloop flow, removed 15 redundant places. [2024-11-12 16:25:43,718 INFO L231 Difference]: Finished difference. Result has 284 places, 323 transitions, 4037 flow [2024-11-12 16:25:43,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4037, PETRI_PLACES=284, PETRI_TRANSITIONS=323} [2024-11-12 16:25:43,719 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 262 predicate places. [2024-11-12 16:25:43,719 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 323 transitions, 4037 flow [2024-11-12 16:25:43,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 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) [2024-11-12 16:25:43,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:43,720 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:43,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:43,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 16:25:43,924 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:43,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:43,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2141532956, now seen corresponding path program 5 times [2024-11-12 16:25:43,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:43,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124947151] [2024-11-12 16:25:43,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:44,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124947151] [2024-11-12 16:25:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124947151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112028029] [2024-11-12 16:25:44,093 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:25:44,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:44,096 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:44,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-12 16:25:44,146 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:25:44,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:44,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 16:25:44,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:44,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112028029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:44,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:44,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2024-11-12 16:25:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591468695] [2024-11-12 16:25:44,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:44,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 16:25:44,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 16:25:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2024-11-12 16:25:44,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:44,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 323 transitions, 4037 flow. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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) [2024-11-12 16:25:44,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:44,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:44,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:45,855 INFO L124 PetriNetUnfolderBase]: 720/1351 cut-off events. [2024-11-12 16:25:45,855 INFO L125 PetriNetUnfolderBase]: For 22783/22783 co-relation queries the response was YES. [2024-11-12 16:25:45,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 1351 events. 720/1351 cut-off events. For 22783/22783 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 7942 event pairs, 11 based on Foata normal form. 3/1326 useless extension candidates. Maximal degree in co-relation 10046. Up to 496 conditions per place. [2024-11-12 16:25:45,869 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 184 selfloop transitions, 238 changer transitions 12/435 dead transitions. [2024-11-12 16:25:45,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 435 transitions, 6168 flow [2024-11-12 16:25:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 16:25:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 16:25:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 254 transitions. [2024-11-12 16:25:45,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-11-12 16:25:45,872 INFO L175 Difference]: Start difference. First operand has 284 places, 323 transitions, 4037 flow. Second operand 29 states and 254 transitions. [2024-11-12 16:25:45,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 435 transitions, 6168 flow [2024-11-12 16:25:46,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 435 transitions, 5452 flow, removed 334 selfloop flow, removed 13 redundant places. [2024-11-12 16:25:46,012 INFO L231 Difference]: Finished difference. Result has 300 places, 365 transitions, 4972 flow [2024-11-12 16:25:46,012 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4972, PETRI_PLACES=300, PETRI_TRANSITIONS=365} [2024-11-12 16:25:46,014 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 278 predicate places. [2024-11-12 16:25:46,014 INFO L471 AbstractCegarLoop]: Abstraction has has 300 places, 365 transitions, 4972 flow [2024-11-12 16:25:46,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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) [2024-11-12 16:25:46,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:46,014 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:46,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:46,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 16:25:46,218 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:46,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -664029344, now seen corresponding path program 6 times [2024-11-12 16:25:46,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170870727] [2024-11-12 16:25:46,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:46,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:46,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170870727] [2024-11-12 16:25:46,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170870727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:46,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210292651] [2024-11-12 16:25:46,435 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:25:46,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:46,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:46,437 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:46,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-12 16:25:46,480 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:25:46,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:46,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 16:25:46,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:46,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210292651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:46,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:46,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2024-11-12 16:25:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916918847] [2024-11-12 16:25:46,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:46,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 16:25:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:46,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 16:25:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2024-11-12 16:25:46,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:46,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 365 transitions, 4972 flow. Second operand has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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) [2024-11-12 16:25:46,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:46,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:46,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:48,386 INFO L124 PetriNetUnfolderBase]: 739/1382 cut-off events. [2024-11-12 16:25:48,386 INFO L125 PetriNetUnfolderBase]: For 22615/22615 co-relation queries the response was YES. [2024-11-12 16:25:48,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10686 conditions, 1382 events. 739/1382 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8169 event pairs, 11 based on Foata normal form. 4/1384 useless extension candidates. Maximal degree in co-relation 10545. Up to 707 conditions per place. [2024-11-12 16:25:48,399 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 234 selfloop transitions, 194 changer transitions 10/439 dead transitions. [2024-11-12 16:25:48,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 439 transitions, 6692 flow [2024-11-12 16:25:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 16:25:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 16:25:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 245 transitions. [2024-11-12 16:25:48,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2024-11-12 16:25:48,401 INFO L175 Difference]: Start difference. First operand has 300 places, 365 transitions, 4972 flow. Second operand 29 states and 245 transitions. [2024-11-12 16:25:48,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 439 transitions, 6692 flow [2024-11-12 16:25:48,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 439 transitions, 6259 flow, removed 144 selfloop flow, removed 21 redundant places. [2024-11-12 16:25:48,547 INFO L231 Difference]: Finished difference. Result has 311 places, 381 transitions, 5477 flow [2024-11-12 16:25:48,548 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5477, PETRI_PLACES=311, PETRI_TRANSITIONS=381} [2024-11-12 16:25:48,549 INFO L279 CegarLoopForPetriNet]: 22 programPoint places, 289 predicate places. [2024-11-12 16:25:48,549 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 381 transitions, 5477 flow [2024-11-12 16:25:48,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.818181818181818) internal successors, (128), 22 states have internal predecessors, (128), 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) [2024-11-12 16:25:48,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:25:48,549 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:25:48,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-12 16:25:48,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-12 16:25:48,750 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:25:48,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:25:48,750 INFO L85 PathProgramCache]: Analyzing trace with hash 269434365, now seen corresponding path program 20 times [2024-11-12 16:25:48,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:25:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47971974] [2024-11-12 16:25:48,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:25:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:25:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:25:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:49,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:25:49,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47971974] [2024-11-12 16:25:49,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47971974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:25:49,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054901039] [2024-11-12 16:25:49,252 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:25:49,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:25:49,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:25:49,257 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:25:49,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-12 16:25:49,310 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:25:49,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:25:49,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 16:25:49,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:25:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:49,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:25:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:25:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054901039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:25:54,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:25:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-12 16:25:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807186466] [2024-11-12 16:25:54,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:25:54,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 16:25:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:25:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 16:25:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=385, Unknown=1, NotChecked=0, Total=462 [2024-11-12 16:25:54,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-12 16:25:54,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 381 transitions, 5477 flow. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 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) [2024-11-12 16:25:54,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:25:54,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-12 16:25:54,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:25:58,622 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 []