./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/popl20-figure3.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 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:51:53,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:51:53,462 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:51:53,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:51:53,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:51:53,501 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:51:53,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:51:53,502 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:51:53,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:51:53,502 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:51:53,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:51:53,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:51:53,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:51:53,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:51:53,508 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:51:53,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:51:53,509 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:51:53,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:51:53,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:51:53,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:51:53,510 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:51:53,510 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:51:53,510 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:51:53,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:51:53,511 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:51:53,511 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:51:53,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:51:53,512 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:51:53,512 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:51:53,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:51:53,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:51:53,513 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:51:53,513 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:51:53,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:53,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:51:53,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:51:53,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:51:53,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:51:53,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:51:53,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:51:53,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:51:53,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:51:53,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d53ec9655ee282673b712b4a154821b0baa87dd23720a53d10f4e3f8ec015d6 [2024-11-09 10:51:53,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:51:53,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:51:53,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:51:53,797 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:51:53,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:51:53,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-09 10:51:55,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:51:55,498 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:51:55,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure3.wvr.c [2024-11-09 10:51:55,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540e8ef88/6ef223b805164256850bfb5ff0e68050/FLAG5263858ea [2024-11-09 10:51:55,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/540e8ef88/6ef223b805164256850bfb5ff0e68050 [2024-11-09 10:51:55,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:51:55,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:51:55,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:55,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:51:55,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:51:55,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:55" (1/1) ... [2024-11-09 10:51:55,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547191e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:55, skipping insertion in model container [2024-11-09 10:51:55,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:51:55" (1/1) ... [2024-11-09 10:51:55,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:51:56,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:56,134 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:51:56,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:51:56,177 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:51:56,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56 WrapperNode [2024-11-09 10:51:56,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:51:56,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:56,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:51:56,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:51:56,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,214 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2024-11-09 10:51:56,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:51:56,215 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:51:56,215 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:51:56,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:51:56,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,252 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]. [2024-11-09 10:51:56,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:51:56,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:51:56,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:51:56,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:51:56,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (1/1) ... [2024-11-09 10:51:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:51:56,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:56,313 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) [2024-11-09 10:51:56,320 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 [2024-11-09 10:51:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:51:56,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:51:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:51:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:51:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:51:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:51:56,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:51:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:51:56,370 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:51:56,456 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:51:56,458 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:51:56,605 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:51:56,605 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:51:56,742 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:51:56,743 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:51:56,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:56 BoogieIcfgContainer [2024-11-09 10:51:56,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:51:56,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:51:56,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:51:56,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:51:56,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:51:55" (1/3) ... [2024-11-09 10:51:56,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca36458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:56, skipping insertion in model container [2024-11-09 10:51:56,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:51:56" (2/3) ... [2024-11-09 10:51:56,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca36458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:51:56, skipping insertion in model container [2024-11-09 10:51:56,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:51:56" (3/3) ... [2024-11-09 10:51:56,753 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2024-11-09 10:51:56,771 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:51:56,773 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:51:56,773 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:51:56,818 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:51:56,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:56,890 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-09 10:51:56,890 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:56,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-09 10:51:56,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-09 10:51:56,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-09 10:51:56,910 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:51:56,917 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;@7e308624, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:51:56,918 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:51:56,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:51:56,929 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:51:56,930 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:51:56,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:56,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:56,931 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)] === [2024-11-09 10:51:56,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1762227889, now seen corresponding path program 1 times [2024-11-09 10:51:56,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:56,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732387954] [2024-11-09 10:51:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:56,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732387954] [2024-11-09 10:51:57,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732387954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:57,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:51:57,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158007917] [2024-11-09 10:51:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:57,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:51:57,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:51:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:51:57,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:51:57,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:57,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:57,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:51:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:57,441 INFO L124 PetriNetUnfolderBase]: 86/168 cut-off events. [2024-11-09 10:51:57,441 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-09 10:51:57,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 168 events. 86/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 500 event pairs, 32 based on Foata normal form. 2/162 useless extension candidates. Maximal degree in co-relation 297. Up to 108 conditions per place. [2024-11-09 10:51:57,449 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-09 10:51:57,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-09 10:51:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:51:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:51:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-09 10:51:57,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-09 10:51:57,463 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-09 10:51:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-09 10:51:57,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:57,468 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-09 10:51:57,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-09 10:51:57,473 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-09 10:51:57,473 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-09 10:51:57,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-09 10:51:57,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:57,475 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:57,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:51:57,476 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)] === [2024-11-09 10:51:57,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash -866629274, now seen corresponding path program 1 times [2024-11-09 10:51:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:57,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897725468] [2024-11-09 10:51:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:57,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897725468] [2024-11-09 10:51:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897725468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:57,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:57,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505117631] [2024-11-09 10:51:57,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:57,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:57,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:57,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:57,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:57,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:57,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:57,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:57,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:57,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:57,803 INFO L124 PetriNetUnfolderBase]: 107/215 cut-off events. [2024-11-09 10:51:57,804 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:51:57,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 215 events. 107/215 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 819 event pairs, 45 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 168. Up to 139 conditions per place. [2024-11-09 10:51:57,808 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 26 selfloop transitions, 7 changer transitions 3/40 dead transitions. [2024-11-09 10:51:57,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 40 transitions, 173 flow [2024-11-09 10:51:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:57,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-09 10:51:57,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-09 10:51:57,811 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 67 transitions. [2024-11-09 10:51:57,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 40 transitions, 173 flow [2024-11-09 10:51:57,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:57,813 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 106 flow [2024-11-09 10:51:57,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-11-09 10:51:57,814 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-09 10:51:57,815 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 106 flow [2024-11-09 10:51:57,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:57,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:57,815 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:57,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:51:57,815 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)] === [2024-11-09 10:51:57,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -929821614, now seen corresponding path program 2 times [2024-11-09 10:51:57,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:57,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101520878] [2024-11-09 10:51:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:57,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:57,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101520878] [2024-11-09 10:51:57,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101520878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:57,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:57,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661835845] [2024-11-09 10:51:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:57,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:57,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:57,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-09 10:51:57,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:57,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:57,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:58,170 INFO L124 PetriNetUnfolderBase]: 120/247 cut-off events. [2024-11-09 10:51:58,170 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-09 10:51:58,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 247 events. 120/247 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1019 event pairs, 4 based on Foata normal form. 9/254 useless extension candidates. Maximal degree in co-relation 303. Up to 100 conditions per place. [2024-11-09 10:51:58,176 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 40 selfloop transitions, 10 changer transitions 1/55 dead transitions. [2024-11-09 10:51:58,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 55 transitions, 315 flow [2024-11-09 10:51:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:51:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:51:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-09 10:51:58,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-09 10:51:58,179 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 106 flow. Second operand 7 states and 90 transitions. [2024-11-09 10:51:58,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 55 transitions, 315 flow [2024-11-09 10:51:58,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 55 transitions, 313 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:51:58,204 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 186 flow [2024-11-09 10:51:58,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=186, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-09 10:51:58,204 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-09 10:51:58,205 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 186 flow [2024-11-09 10:51:58,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-09 10:51:58,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:58,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:58,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:51:58,205 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)] === [2024-11-09 10:51:58,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:58,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1502350898, now seen corresponding path program 3 times [2024-11-09 10:51:58,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:58,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808224347] [2024-11-09 10:51:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808224347] [2024-11-09 10:51:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808224347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:58,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558393768] [2024-11-09 10:51:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:58,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:58,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:58,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:58,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:58,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:58,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:58,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:58,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:58,541 INFO L124 PetriNetUnfolderBase]: 159/327 cut-off events. [2024-11-09 10:51:58,541 INFO L125 PetriNetUnfolderBase]: For 638/644 co-relation queries the response was YES. [2024-11-09 10:51:58,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 327 events. 159/327 cut-off events. For 638/644 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1329 event pairs, 55 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 718. Up to 139 conditions per place. [2024-11-09 10:51:58,548 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 36 selfloop transitions, 10 changer transitions 2/52 dead transitions. [2024-11-09 10:51:58,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 387 flow [2024-11-09 10:51:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-11-09 10:51:58,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 10:51:58,550 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 186 flow. Second operand 5 states and 65 transitions. [2024-11-09 10:51:58,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 387 flow [2024-11-09 10:51:58,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 384 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:51:58,557 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 241 flow [2024-11-09 10:51:58,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2024-11-09 10:51:58,559 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-09 10:51:58,559 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 241 flow [2024-11-09 10:51:58,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:58,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:58,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:58,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:51:58,561 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)] === [2024-11-09 10:51:58,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:58,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1419935380, now seen corresponding path program 4 times [2024-11-09 10:51:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:58,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535480177] [2024-11-09 10:51:58,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:58,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:58,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535480177] [2024-11-09 10:51:58,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535480177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494331940] [2024-11-09 10:51:58,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:51:58,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:58,711 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) [2024-11-09 10:51:58,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:51:58,779 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:51:58,780 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:51:58,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 10:51:58,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:51:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:51:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494331940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:51:58,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:51:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-11-09 10:51:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26347416] [2024-11-09 10:51:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:51:58,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:51:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:58,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:51:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:51:58,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:58,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 241 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2024-11-09 10:51:58,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:58,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:58,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:59,184 INFO L124 PetriNetUnfolderBase]: 232/471 cut-off events. [2024-11-09 10:51:59,184 INFO L125 PetriNetUnfolderBase]: For 1306/1310 co-relation queries the response was YES. [2024-11-09 10:51:59,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 471 events. 232/471 cut-off events. For 1306/1310 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2211 event pairs, 33 based on Foata normal form. 13/482 useless extension candidates. Maximal degree in co-relation 1244. Up to 161 conditions per place. [2024-11-09 10:51:59,190 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 41 selfloop transitions, 31 changer transitions 2/78 dead transitions. [2024-11-09 10:51:59,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 636 flow [2024-11-09 10:51:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:51:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:51:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-09 10:51:59,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 10:51:59,194 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 241 flow. Second operand 10 states and 126 transitions. [2024-11-09 10:51:59,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 636 flow [2024-11-09 10:51:59,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 612 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 10:51:59,206 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 464 flow [2024-11-09 10:51:59,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=464, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-09 10:51:59,208 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2024-11-09 10:51:59,208 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 464 flow [2024-11-09 10:51:59,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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) [2024-11-09 10:51:59,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:59,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:59,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:51:59,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:59,410 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)] === [2024-11-09 10:51:59,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 144495532, now seen corresponding path program 5 times [2024-11-09 10:51:59,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:59,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508423514] [2024-11-09 10:51:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:59,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508423514] [2024-11-09 10:51:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508423514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:59,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:59,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:51:59,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046374336] [2024-11-09 10:51:59,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:59,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:51:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:51:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:51:59,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:59,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 464 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:59,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:59,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:59,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:59,597 INFO L124 PetriNetUnfolderBase]: 221/439 cut-off events. [2024-11-09 10:51:59,597 INFO L125 PetriNetUnfolderBase]: For 2605/2609 co-relation queries the response was YES. [2024-11-09 10:51:59,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 439 events. 221/439 cut-off events. For 2605/2609 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1946 event pairs, 58 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 1612. Up to 189 conditions per place. [2024-11-09 10:51:59,602 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 41 selfloop transitions, 17 changer transitions 1/63 dead transitions. [2024-11-09 10:51:59,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 63 transitions, 685 flow [2024-11-09 10:51:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:51:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:51:59,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-11-09 10:51:59,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 10:51:59,604 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 464 flow. Second operand 5 states and 63 transitions. [2024-11-09 10:51:59,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 63 transitions, 685 flow [2024-11-09 10:51:59,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 618 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-09 10:51:59,611 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 483 flow [2024-11-09 10:51:59,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=483, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-11-09 10:51:59,612 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2024-11-09 10:51:59,612 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 483 flow [2024-11-09 10:51:59,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:51:59,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:59,613 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:59,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:51:59,614 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)] === [2024-11-09 10:51:59,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1770166318, now seen corresponding path program 6 times [2024-11-09 10:51:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:59,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52445232] [2024-11-09 10:51:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:59,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:59,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:59,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52445232] [2024-11-09 10:51:59,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52445232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:51:59,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:51:59,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:51:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685887708] [2024-11-09 10:51:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:51:59,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:51:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:51:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:51:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:51:59,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:51:59,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-09 10:51:59,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:51:59,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:51:59,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:51:59,852 INFO L124 PetriNetUnfolderBase]: 222/444 cut-off events. [2024-11-09 10:51:59,852 INFO L125 PetriNetUnfolderBase]: For 2603/2603 co-relation queries the response was YES. [2024-11-09 10:51:59,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2031 conditions, 444 events. 222/444 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1973 event pairs, 60 based on Foata normal form. 7/448 useless extension candidates. Maximal degree in co-relation 1651. Up to 171 conditions per place. [2024-11-09 10:51:59,858 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 40 selfloop transitions, 22 changer transitions 0/66 dead transitions. [2024-11-09 10:51:59,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 670 flow [2024-11-09 10:51:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:51:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:51:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-11-09 10:51:59,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-11-09 10:51:59,859 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 483 flow. Second operand 6 states and 73 transitions. [2024-11-09 10:51:59,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 670 flow [2024-11-09 10:51:59,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 630 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-09 10:51:59,866 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 503 flow [2024-11-09 10:51:59,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=503, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-11-09 10:51:59,867 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 35 predicate places. [2024-11-09 10:51:59,867 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 503 flow [2024-11-09 10:51:59,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-11-09 10:51:59,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:51:59,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:51:59,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:51:59,868 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)] === [2024-11-09 10:51:59,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:51:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1128899502, now seen corresponding path program 1 times [2024-11-09 10:51:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:51:59,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329843790] [2024-11-09 10:51:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:51:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:51:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:51:59,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:51:59,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329843790] [2024-11-09 10:51:59,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329843790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:51:59,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118008658] [2024-11-09 10:51:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:51:59,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:51:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:51:59,972 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) [2024-11-09 10:51:59,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:52:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:00,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 10:52:00,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:52:00,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:52:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118008658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:00,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2024-11-09 10:52:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079441590] [2024-11-09 10:52:00,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:00,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:52:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:52:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:52:00,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-09 10:52:00,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-09 10:52:00,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:00,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-09 10:52:00,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:00,339 INFO L124 PetriNetUnfolderBase]: 514/948 cut-off events. [2024-11-09 10:52:00,340 INFO L125 PetriNetUnfolderBase]: For 4533/4561 co-relation queries the response was YES. [2024-11-09 10:52:00,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 948 events. 514/948 cut-off events. For 4533/4561 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4602 event pairs, 104 based on Foata normal form. 12/957 useless extension candidates. Maximal degree in co-relation 2799. Up to 441 conditions per place. [2024-11-09 10:52:00,349 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 78 selfloop transitions, 5 changer transitions 8/98 dead transitions. [2024-11-09 10:52:00,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 1056 flow [2024-11-09 10:52:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:52:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:52:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-09 10:52:00,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 10:52:00,350 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 503 flow. Second operand 4 states and 64 transitions. [2024-11-09 10:52:00,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 1056 flow [2024-11-09 10:52:00,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 998 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:52:00,359 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 490 flow [2024-11-09 10:52:00,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-09 10:52:00,360 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2024-11-09 10:52:00,360 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 490 flow [2024-11-09 10:52:00,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 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) [2024-11-09 10:52:00,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:00,360 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:00,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:00,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 10:52:00,561 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)] === [2024-11-09 10:52:00,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 977072945, now seen corresponding path program 2 times [2024-11-09 10:52:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735729227] [2024-11-09 10:52:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:00,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735729227] [2024-11-09 10:52:00,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735729227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:00,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970073246] [2024-11-09 10:52:00,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:00,708 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) [2024-11-09 10:52:00,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:52:00,760 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:00,761 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:00,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:00,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970073246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:00,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:00,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647993550] [2024-11-09 10:52:00,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:00,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:00,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:00,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:00,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 490 flow. Second operand has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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) [2024-11-09 10:52:00,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:00,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:00,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:02,257 INFO L124 PetriNetUnfolderBase]: 1025/1905 cut-off events. [2024-11-09 10:52:02,257 INFO L125 PetriNetUnfolderBase]: For 9443/9465 co-relation queries the response was YES. [2024-11-09 10:52:02,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8925 conditions, 1905 events. 1025/1905 cut-off events. For 9443/9465 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10292 event pairs, 50 based on Foata normal form. 123/2022 useless extension candidates. Maximal degree in co-relation 5038. Up to 584 conditions per place. [2024-11-09 10:52:02,277 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 113 selfloop transitions, 134 changer transitions 8/262 dead transitions. [2024-11-09 10:52:02,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 262 transitions, 2611 flow [2024-11-09 10:52:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-09 10:52:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-11-09 10:52:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 493 transitions. [2024-11-09 10:52:02,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47771317829457366 [2024-11-09 10:52:02,305 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 490 flow. Second operand 43 states and 493 transitions. [2024-11-09 10:52:02,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 262 transitions, 2611 flow [2024-11-09 10:52:02,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 262 transitions, 2611 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:52:02,324 INFO L231 Difference]: Finished difference. Result has 115 places, 170 transitions, 1983 flow [2024-11-09 10:52:02,325 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1983, PETRI_PLACES=115, PETRI_TRANSITIONS=170} [2024-11-09 10:52:02,325 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2024-11-09 10:52:02,325 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 170 transitions, 1983 flow [2024-11-09 10:52:02,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 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) [2024-11-09 10:52:02,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:02,326 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:02,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:02,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:02,530 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)] === [2024-11-09 10:52:02,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1344827249, now seen corresponding path program 3 times [2024-11-09 10:52:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685788656] [2024-11-09 10:52:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:02,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685788656] [2024-11-09 10:52:02,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685788656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855540342] [2024-11-09 10:52:02,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:02,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:02,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:02,708 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) [2024-11-09 10:52:02,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:52:02,767 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:52:02,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:02,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:02,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855540342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:02,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230376903] [2024-11-09 10:52:02,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:02,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:02,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 170 transitions, 1983 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-09 10:52:02,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:02,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:02,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:03,497 INFO L124 PetriNetUnfolderBase]: 1088/2041 cut-off events. [2024-11-09 10:52:03,498 INFO L125 PetriNetUnfolderBase]: For 22020/22088 co-relation queries the response was YES. [2024-11-09 10:52:03,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11965 conditions, 2041 events. 1088/2041 cut-off events. For 22020/22088 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11514 event pairs, 160 based on Foata normal form. 72/2107 useless extension candidates. Maximal degree in co-relation 11474. Up to 867 conditions per place. [2024-11-09 10:52:03,524 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 129 selfloop transitions, 94 changer transitions 11/241 dead transitions. [2024-11-09 10:52:03,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 241 transitions, 3186 flow [2024-11-09 10:52:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:52:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:52:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 175 transitions. [2024-11-09 10:52:03,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-09 10:52:03,527 INFO L175 Difference]: Start difference. First operand has 115 places, 170 transitions, 1983 flow. Second operand 15 states and 175 transitions. [2024-11-09 10:52:03,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 241 transitions, 3186 flow [2024-11-09 10:52:03,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 241 transitions, 2494 flow, removed 322 selfloop flow, removed 7 redundant places. [2024-11-09 10:52:03,609 INFO L231 Difference]: Finished difference. Result has 131 places, 196 transitions, 2045 flow [2024-11-09 10:52:03,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2045, PETRI_PLACES=131, PETRI_TRANSITIONS=196} [2024-11-09 10:52:03,610 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2024-11-09 10:52:03,610 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 196 transitions, 2045 flow [2024-11-09 10:52:03,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-09 10:52:03,611 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:03,611 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:03,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 10:52:03,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:03,812 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)] === [2024-11-09 10:52:03,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1853609165, now seen corresponding path program 4 times [2024-11-09 10:52:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:03,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392968615] [2024-11-09 10:52:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392968615] [2024-11-09 10:52:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392968615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:03,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445833180] [2024-11-09 10:52:03,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:03,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:03,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:03,969 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) [2024-11-09 10:52:03,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:52:04,024 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:04,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:04,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:04,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:04,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445833180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:04,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:04,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-09 10:52:04,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644310429] [2024-11-09 10:52:04,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:04,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:52:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:52:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:52:04,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:04,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 196 transitions, 2045 flow. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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) [2024-11-09 10:52:04,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:04,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:04,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:05,032 INFO L124 PetriNetUnfolderBase]: 1399/2621 cut-off events. [2024-11-09 10:52:05,032 INFO L125 PetriNetUnfolderBase]: For 23038/23058 co-relation queries the response was YES. [2024-11-09 10:52:05,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14078 conditions, 2621 events. 1399/2621 cut-off events. For 23038/23058 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15643 event pairs, 39 based on Foata normal form. 34/2639 useless extension candidates. Maximal degree in co-relation 13794. Up to 588 conditions per place. [2024-11-09 10:52:05,063 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 109 selfloop transitions, 293 changer transitions 1/410 dead transitions. [2024-11-09 10:52:05,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 410 transitions, 4945 flow [2024-11-09 10:52:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 10:52:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 10:52:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 250 transitions. [2024-11-09 10:52:05,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-11-09 10:52:05,065 INFO L175 Difference]: Start difference. First operand has 131 places, 196 transitions, 2045 flow. Second operand 22 states and 250 transitions. [2024-11-09 10:52:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 410 transitions, 4945 flow [2024-11-09 10:52:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 410 transitions, 4797 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-09 10:52:05,160 INFO L231 Difference]: Finished difference. Result has 153 places, 351 transitions, 4562 flow [2024-11-09 10:52:05,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4562, PETRI_PLACES=153, PETRI_TRANSITIONS=351} [2024-11-09 10:52:05,162 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-11-09 10:52:05,162 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 351 transitions, 4562 flow [2024-11-09 10:52:05,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 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) [2024-11-09 10:52:05,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:05,163 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:05,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:52:05,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 10:52:05,364 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)] === [2024-11-09 10:52:05,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -640440343, now seen corresponding path program 5 times [2024-11-09 10:52:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:05,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507501409] [2024-11-09 10:52:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507501409] [2024-11-09 10:52:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507501409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:05,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703592214] [2024-11-09 10:52:05,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:05,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:05,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:05,497 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) [2024-11-09 10:52:05,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:52:05,549 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:05,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:05,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 10:52:05,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:05,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:05,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703592214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:05,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:05,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-09 10:52:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16472684] [2024-11-09 10:52:05,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:05,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:52:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:52:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:52:05,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:05,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 351 transitions, 4562 flow. Second operand has 17 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 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) [2024-11-09 10:52:05,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:05,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:05,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:07,612 INFO L124 PetriNetUnfolderBase]: 2057/3864 cut-off events. [2024-11-09 10:52:07,613 INFO L125 PetriNetUnfolderBase]: For 48010/48058 co-relation queries the response was YES. [2024-11-09 10:52:07,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24312 conditions, 3864 events. 2057/3864 cut-off events. For 48010/48058 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25260 event pairs, 69 based on Foata normal form. 109/3951 useless extension candidates. Maximal degree in co-relation 24000. Up to 916 conditions per place. [2024-11-09 10:52:07,662 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 130 selfloop transitions, 486 changer transitions 1/624 dead transitions. [2024-11-09 10:52:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 624 transitions, 9183 flow [2024-11-09 10:52:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 10:52:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-09 10:52:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 367 transitions. [2024-11-09 10:52:07,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4497549019607843 [2024-11-09 10:52:07,666 INFO L175 Difference]: Start difference. First operand has 153 places, 351 transitions, 4562 flow. Second operand 34 states and 367 transitions. [2024-11-09 10:52:07,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 624 transitions, 9183 flow [2024-11-09 10:52:07,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 624 transitions, 8297 flow, removed 342 selfloop flow, removed 3 redundant places. [2024-11-09 10:52:07,912 INFO L231 Difference]: Finished difference. Result has 200 places, 538 transitions, 8087 flow [2024-11-09 10:52:07,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8087, PETRI_PLACES=200, PETRI_TRANSITIONS=538} [2024-11-09 10:52:07,913 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-11-09 10:52:07,913 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 538 transitions, 8087 flow [2024-11-09 10:52:07,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.0) internal successors, (136), 17 states have internal predecessors, (136), 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) [2024-11-09 10:52:07,914 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:07,914 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:07,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:52:08,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:08,119 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)] === [2024-11-09 10:52:08,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:08,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1969289697, now seen corresponding path program 6 times [2024-11-09 10:52:08,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:08,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105052573] [2024-11-09 10:52:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:08,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105052573] [2024-11-09 10:52:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105052573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991674254] [2024-11-09 10:52:08,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:52:08,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:08,275 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) [2024-11-09 10:52:08,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:52:08,327 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 10:52:08,328 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:08,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:08,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:08,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:08,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991674254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:08,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:08,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 10:52:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858509032] [2024-11-09 10:52:08,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:08,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:52:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:08,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:52:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:52:08,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:08,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 538 transitions, 8087 flow. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 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) [2024-11-09 10:52:08,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:08,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:10,284 INFO L124 PetriNetUnfolderBase]: 2379/4524 cut-off events. [2024-11-09 10:52:10,284 INFO L125 PetriNetUnfolderBase]: For 61601/61647 co-relation queries the response was YES. [2024-11-09 10:52:10,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30340 conditions, 4524 events. 2379/4524 cut-off events. For 61601/61647 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30927 event pairs, 107 based on Foata normal form. 60/4562 useless extension candidates. Maximal degree in co-relation 29170. Up to 832 conditions per place. [2024-11-09 10:52:10,332 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 158 selfloop transitions, 560 changer transitions 2/727 dead transitions. [2024-11-09 10:52:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 727 transitions, 12165 flow [2024-11-09 10:52:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 10:52:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-09 10:52:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 366 transitions. [2024-11-09 10:52:10,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-11-09 10:52:10,336 INFO L175 Difference]: Start difference. First operand has 200 places, 538 transitions, 8087 flow. Second operand 33 states and 366 transitions. [2024-11-09 10:52:10,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 727 transitions, 12165 flow [2024-11-09 10:52:10,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 727 transitions, 11398 flow, removed 182 selfloop flow, removed 7 redundant places. [2024-11-09 10:52:10,824 INFO L231 Difference]: Finished difference. Result has 234 places, 649 transitions, 10833 flow [2024-11-09 10:52:10,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7462, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=447, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=10833, PETRI_PLACES=234, PETRI_TRANSITIONS=649} [2024-11-09 10:52:10,826 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 208 predicate places. [2024-11-09 10:52:10,826 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 649 transitions, 10833 flow [2024-11-09 10:52:10,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 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) [2024-11-09 10:52:10,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:10,826 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:10,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 10:52:11,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:11,028 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)] === [2024-11-09 10:52:11,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1371433279, now seen corresponding path program 7 times [2024-11-09 10:52:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:11,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848105448] [2024-11-09 10:52:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:11,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848105448] [2024-11-09 10:52:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848105448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170630607] [2024-11-09 10:52:11,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:52:11,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:11,144 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) [2024-11-09 10:52:11,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:52:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:11,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:11,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:11,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:11,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170630607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:11,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:11,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 10:52:11,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767221077] [2024-11-09 10:52:11,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:11,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:52:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:11,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:52:11,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:52:11,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:11,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 649 transitions, 10833 flow. Second operand has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 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) [2024-11-09 10:52:11,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:11,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:11,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:12,918 INFO L124 PetriNetUnfolderBase]: 2713/5080 cut-off events. [2024-11-09 10:52:12,918 INFO L125 PetriNetUnfolderBase]: For 83085/83143 co-relation queries the response was YES. [2024-11-09 10:52:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37030 conditions, 5080 events. 2713/5080 cut-off events. For 83085/83143 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 34753 event pairs, 227 based on Foata normal form. 68/5128 useless extension candidates. Maximal degree in co-relation 36498. Up to 1155 conditions per place. [2024-11-09 10:52:12,972 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 252 selfloop transitions, 531 changer transitions 3/793 dead transitions. [2024-11-09 10:52:12,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 793 transitions, 14729 flow [2024-11-09 10:52:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 10:52:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 10:52:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-11-09 10:52:12,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:52:12,974 INFO L175 Difference]: Start difference. First operand has 234 places, 649 transitions, 10833 flow. Second operand 23 states and 276 transitions. [2024-11-09 10:52:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 793 transitions, 14729 flow [2024-11-09 10:52:13,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 793 transitions, 14609 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-11-09 10:52:13,618 INFO L231 Difference]: Finished difference. Result has 253 places, 723 transitions, 13322 flow [2024-11-09 10:52:13,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10606, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13322, PETRI_PLACES=253, PETRI_TRANSITIONS=723} [2024-11-09 10:52:13,619 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-09 10:52:13,619 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 723 transitions, 13322 flow [2024-11-09 10:52:13,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.285714285714286) internal successors, (116), 14 states have internal predecessors, (116), 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) [2024-11-09 10:52:13,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:13,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:13,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:52:13,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:52:13,820 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)] === [2024-11-09 10:52:13,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1795947619, now seen corresponding path program 8 times [2024-11-09 10:52:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:13,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288377956] [2024-11-09 10:52:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:13,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:13,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:13,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288377956] [2024-11-09 10:52:13,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288377956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:13,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904046093] [2024-11-09 10:52:13,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:13,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:13,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:13,954 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) [2024-11-09 10:52:13,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:52:14,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:14,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:14,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:14,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:14,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:14,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904046093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:14,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 10:52:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899784581] [2024-11-09 10:52:14,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:14,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:52:14,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:14,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:52:14,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:52:14,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:14,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 723 transitions, 13322 flow. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:52:14,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:14,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:14,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:15,927 INFO L124 PetriNetUnfolderBase]: 3322/6226 cut-off events. [2024-11-09 10:52:15,927 INFO L125 PetriNetUnfolderBase]: For 113363/113405 co-relation queries the response was YES. [2024-11-09 10:52:15,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47848 conditions, 6226 events. 3322/6226 cut-off events. For 113363/113405 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43784 event pairs, 241 based on Foata normal form. 64/6262 useless extension candidates. Maximal degree in co-relation 47483. Up to 1304 conditions per place. [2024-11-09 10:52:16,002 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 205 selfloop transitions, 746 changer transitions 5/963 dead transitions. [2024-11-09 10:52:16,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 963 transitions, 19443 flow [2024-11-09 10:52:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:52:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:52:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 280 transitions. [2024-11-09 10:52:16,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-09 10:52:16,005 INFO L175 Difference]: Start difference. First operand has 253 places, 723 transitions, 13322 flow. Second operand 25 states and 280 transitions. [2024-11-09 10:52:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 963 transitions, 19443 flow [2024-11-09 10:52:17,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 963 transitions, 18878 flow, removed 190 selfloop flow, removed 6 redundant places. [2024-11-09 10:52:17,028 INFO L231 Difference]: Finished difference. Result has 281 places, 914 transitions, 19437 flow [2024-11-09 10:52:17,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12887, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=19437, PETRI_PLACES=281, PETRI_TRANSITIONS=914} [2024-11-09 10:52:17,029 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 255 predicate places. [2024-11-09 10:52:17,029 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 914 transitions, 19437 flow [2024-11-09 10:52:17,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:52:17,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:17,030 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:17,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:17,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 10:52:17,230 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)] === [2024-11-09 10:52:17,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash -838480983, now seen corresponding path program 9 times [2024-11-09 10:52:17,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:17,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661141774] [2024-11-09 10:52:17,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:17,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:17,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661141774] [2024-11-09 10:52:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661141774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:17,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738019885] [2024-11-09 10:52:17,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:52:17,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:17,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:17,347 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) [2024-11-09 10:52:17,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:52:17,389 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 10:52:17,389 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:17,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:17,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:17,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738019885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:17,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:17,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313502068] [2024-11-09 10:52:17,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:17,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:17,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:17,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:17,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 914 transitions, 19437 flow. Second operand has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-09 10:52:17,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:17,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:17,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:19,392 INFO L124 PetriNetUnfolderBase]: 3314/6210 cut-off events. [2024-11-09 10:52:19,393 INFO L125 PetriNetUnfolderBase]: For 138559/138609 co-relation queries the response was YES. [2024-11-09 10:52:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52946 conditions, 6210 events. 3314/6210 cut-off events. For 138559/138609 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 43916 event pairs, 483 based on Foata normal form. 44/6222 useless extension candidates. Maximal degree in co-relation 52500. Up to 2446 conditions per place. [2024-11-09 10:52:19,457 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 411 selfloop transitions, 517 changer transitions 4/939 dead transitions. [2024-11-09 10:52:19,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 939 transitions, 21491 flow [2024-11-09 10:52:19,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:52:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:52:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-11-09 10:52:19,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-11-09 10:52:19,458 INFO L175 Difference]: Start difference. First operand has 281 places, 914 transitions, 19437 flow. Second operand 14 states and 164 transitions. [2024-11-09 10:52:19,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 939 transitions, 21491 flow [2024-11-09 10:52:20,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 939 transitions, 21138 flow, removed 119 selfloop flow, removed 10 redundant places. [2024-11-09 10:52:20,697 INFO L231 Difference]: Finished difference. Result has 285 places, 912 transitions, 20102 flow [2024-11-09 10:52:20,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19042, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20102, PETRI_PLACES=285, PETRI_TRANSITIONS=912} [2024-11-09 10:52:20,698 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 259 predicate places. [2024-11-09 10:52:20,698 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 912 transitions, 20102 flow [2024-11-09 10:52:20,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.2) internal successors, (123), 15 states have internal predecessors, (123), 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) [2024-11-09 10:52:20,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:20,699 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:20,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 10:52:20,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 10:52:20,899 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)] === [2024-11-09 10:52:20,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1396494807, now seen corresponding path program 10 times [2024-11-09 10:52:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50474249] [2024-11-09 10:52:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50474249] [2024-11-09 10:52:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50474249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494069466] [2024-11-09 10:52:21,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:52:21,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:21,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:21,023 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) [2024-11-09 10:52:21,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:52:21,120 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:52:21,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:21,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:21,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:21,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494069466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:21,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:21,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986842699] [2024-11-09 10:52:21,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:21,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:21,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:21,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:21,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 912 transitions, 20102 flow. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:52:21,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:21,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:21,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:23,057 INFO L124 PetriNetUnfolderBase]: 3385/6325 cut-off events. [2024-11-09 10:52:23,057 INFO L125 PetriNetUnfolderBase]: For 136845/136895 co-relation queries the response was YES. [2024-11-09 10:52:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55347 conditions, 6325 events. 3385/6325 cut-off events. For 136845/136895 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 44354 event pairs, 868 based on Foata normal form. 36/6322 useless extension candidates. Maximal degree in co-relation 55163. Up to 4370 conditions per place. [2024-11-09 10:52:23,287 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 805 selfloop transitions, 158 changer transitions 7/977 dead transitions. [2024-11-09 10:52:23,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 977 transitions, 23241 flow [2024-11-09 10:52:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 10:52:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 10:52:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 148 transitions. [2024-11-09 10:52:23,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-11-09 10:52:23,289 INFO L175 Difference]: Start difference. First operand has 285 places, 912 transitions, 20102 flow. Second operand 14 states and 148 transitions. [2024-11-09 10:52:23,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 977 transitions, 23241 flow [2024-11-09 10:52:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 977 transitions, 22427 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-11-09 10:52:24,487 INFO L231 Difference]: Finished difference. Result has 291 places, 938 transitions, 20440 flow [2024-11-09 10:52:24,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19330, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20440, PETRI_PLACES=291, PETRI_TRANSITIONS=938} [2024-11-09 10:52:24,488 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2024-11-09 10:52:24,489 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 938 transitions, 20440 flow [2024-11-09 10:52:24,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:52:24,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:24,489 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:24,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 10:52:24,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 10:52:24,690 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)] === [2024-11-09 10:52:24,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2041918991, now seen corresponding path program 11 times [2024-11-09 10:52:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:24,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731542809] [2024-11-09 10:52:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:24,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:24,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731542809] [2024-11-09 10:52:24,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731542809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:24,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114204979] [2024-11-09 10:52:24,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:52:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:24,878 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) [2024-11-09 10:52:24,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:52:24,935 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:52:24,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:24,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:24,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:24,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:24,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:25,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114204979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:25,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020692897] [2024-11-09 10:52:25,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:25,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:25,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:25,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 938 transitions, 20440 flow. Second operand has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 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) [2024-11-09 10:52:25,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:25,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:25,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:30,036 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 [] [2024-11-09 10:52:32,144 INFO L124 PetriNetUnfolderBase]: 4652/8697 cut-off events. [2024-11-09 10:52:32,144 INFO L125 PetriNetUnfolderBase]: For 189224/189278 co-relation queries the response was YES. [2024-11-09 10:52:32,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76191 conditions, 8697 events. 4652/8697 cut-off events. For 189224/189278 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 64217 event pairs, 485 based on Foata normal form. 132/8782 useless extension candidates. Maximal degree in co-relation 75938. Up to 2632 conditions per place. [2024-11-09 10:52:32,232 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 753 selfloop transitions, 716 changer transitions 1/1477 dead transitions. [2024-11-09 10:52:32,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1477 transitions, 34581 flow [2024-11-09 10:52:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-09 10:52:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-09 10:52:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 403 transitions. [2024-11-09 10:52:32,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664351851851852 [2024-11-09 10:52:32,234 INFO L175 Difference]: Start difference. First operand has 291 places, 938 transitions, 20440 flow. Second operand 36 states and 403 transitions. [2024-11-09 10:52:32,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1477 transitions, 34581 flow [2024-11-09 10:52:34,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1477 transitions, 34472 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-11-09 10:52:34,492 INFO L231 Difference]: Finished difference. Result has 338 places, 1281 transitions, 31295 flow [2024-11-09 10:52:34,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20298, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=935, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=31295, PETRI_PLACES=338, PETRI_TRANSITIONS=1281} [2024-11-09 10:52:34,493 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 312 predicate places. [2024-11-09 10:52:34,494 INFO L471 AbstractCegarLoop]: Abstraction has has 338 places, 1281 transitions, 31295 flow [2024-11-09 10:52:34,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 15 states have internal predecessors, (125), 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) [2024-11-09 10:52:34,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:34,494 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:34,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 10:52:34,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 10:52:34,695 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)] === [2024-11-09 10:52:34,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:34,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1156692187, now seen corresponding path program 12 times [2024-11-09 10:52:34,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:34,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980776877] [2024-11-09 10:52:34,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:34,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:34,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980776877] [2024-11-09 10:52:34,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980776877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:34,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865803167] [2024-11-09 10:52:34,800 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:52:34,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:34,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:34,802 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) [2024-11-09 10:52:34,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:52:34,949 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-09 10:52:34,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:34,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:34,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:35,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:35,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865803167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:35,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:35,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055433160] [2024-11-09 10:52:35,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:35,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:35,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:35,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 1281 transitions, 31295 flow. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:52:35,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:35,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:35,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:39,130 INFO L124 PetriNetUnfolderBase]: 5964/11079 cut-off events. [2024-11-09 10:52:39,131 INFO L125 PetriNetUnfolderBase]: For 314035/314101 co-relation queries the response was YES. [2024-11-09 10:52:39,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105517 conditions, 11079 events. 5964/11079 cut-off events. For 314035/314101 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 84637 event pairs, 1078 based on Foata normal form. 40/11050 useless extension candidates. Maximal degree in co-relation 105228. Up to 5719 conditions per place. [2024-11-09 10:52:39,309 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 899 selfloop transitions, 834 changer transitions 0/1740 dead transitions. [2024-11-09 10:52:39,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1740 transitions, 45513 flow [2024-11-09 10:52:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:52:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:52:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 230 transitions. [2024-11-09 10:52:39,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-11-09 10:52:39,311 INFO L175 Difference]: Start difference. First operand has 338 places, 1281 transitions, 31295 flow. Second operand 20 states and 230 transitions. [2024-11-09 10:52:39,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1740 transitions, 45513 flow [2024-11-09 10:52:43,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1740 transitions, 44864 flow, removed 261 selfloop flow, removed 5 redundant places. [2024-11-09 10:52:43,386 INFO L231 Difference]: Finished difference. Result has 360 places, 1679 transitions, 43253 flow [2024-11-09 10:52:43,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=30810, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=43253, PETRI_PLACES=360, PETRI_TRANSITIONS=1679} [2024-11-09 10:52:43,387 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 334 predicate places. [2024-11-09 10:52:43,388 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1679 transitions, 43253 flow [2024-11-09 10:52:43,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:52:43,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:43,388 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:43,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 10:52:43,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:43,589 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)] === [2024-11-09 10:52:43,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:43,589 INFO L85 PathProgramCache]: Analyzing trace with hash 55832531, now seen corresponding path program 13 times [2024-11-09 10:52:43,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:43,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748671926] [2024-11-09 10:52:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:43,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748671926] [2024-11-09 10:52:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748671926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330523333] [2024-11-09 10:52:43,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:52:43,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:43,734 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) [2024-11-09 10:52:43,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:52:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:43,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:43,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:43,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330523333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:43,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 10:52:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865288460] [2024-11-09 10:52:43,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:43,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:52:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:43,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:52:43,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:52:43,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:43,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1679 transitions, 43253 flow. Second operand has 16 states, 16 states have (on average 8.3125) internal successors, (133), 16 states have internal predecessors, (133), 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) [2024-11-09 10:52:43,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:43,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:43,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:52:49,629 INFO L124 PetriNetUnfolderBase]: 6562/12198 cut-off events. [2024-11-09 10:52:49,629 INFO L125 PetriNetUnfolderBase]: For 369832/369880 co-relation queries the response was YES. [2024-11-09 10:52:49,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121937 conditions, 12198 events. 6562/12198 cut-off events. For 369832/369880 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 94688 event pairs, 685 based on Foata normal form. 41/12164 useless extension candidates. Maximal degree in co-relation 121662. Up to 3954 conditions per place. [2024-11-09 10:52:49,797 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 768 selfloop transitions, 1096 changer transitions 4/1875 dead transitions. [2024-11-09 10:52:49,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 1875 transitions, 51700 flow [2024-11-09 10:52:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:52:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:52:49,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 224 transitions. [2024-11-09 10:52:49,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-09 10:52:49,799 INFO L175 Difference]: Start difference. First operand has 360 places, 1679 transitions, 43253 flow. Second operand 20 states and 224 transitions. [2024-11-09 10:52:49,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 1875 transitions, 51700 flow [2024-11-09 10:52:54,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1875 transitions, 51131 flow, removed 169 selfloop flow, removed 6 redundant places. [2024-11-09 10:52:54,804 INFO L231 Difference]: Finished difference. Result has 384 places, 1832 transitions, 50768 flow [2024-11-09 10:52:54,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42655, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=948, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=50768, PETRI_PLACES=384, PETRI_TRANSITIONS=1832} [2024-11-09 10:52:54,806 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 358 predicate places. [2024-11-09 10:52:54,806 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 1832 transitions, 50768 flow [2024-11-09 10:52:54,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.3125) internal successors, (133), 16 states have internal predecessors, (133), 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) [2024-11-09 10:52:54,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:52:54,807 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:52:54,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:52:55,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:55,012 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)] === [2024-11-09 10:52:55,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:52:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash 858639229, now seen corresponding path program 14 times [2024-11-09 10:52:55,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:52:55,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123036126] [2024-11-09 10:52:55,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:52:55,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:52:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:52:55,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:55,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:52:55,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123036126] [2024-11-09 10:52:55,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123036126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:52:55,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472686218] [2024-11-09 10:52:55,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:52:55,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:52:55,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:52:55,137 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) [2024-11-09 10:52:55,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:52:55,179 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:52:55,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:52:55,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:52:55,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:52:55,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:55,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:52:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:52:55,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472686218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:52:55,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:52:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 10:52:55,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141008737] [2024-11-09 10:52:55,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:52:55,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 10:52:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:52:55,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 10:52:55,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-11-09 10:52:55,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:52:55,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1832 transitions, 50768 flow. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:52:55,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:52:55,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:52:55,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:53:02,111 INFO L124 PetriNetUnfolderBase]: 6552/12178 cut-off events. [2024-11-09 10:53:02,111 INFO L125 PetriNetUnfolderBase]: For 438413/438461 co-relation queries the response was YES. [2024-11-09 10:53:02,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129473 conditions, 12178 events. 6552/12178 cut-off events. For 438413/438461 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 94595 event pairs, 1396 based on Foata normal form. 10/12113 useless extension candidates. Maximal degree in co-relation 129195. Up to 7341 conditions per place. [2024-11-09 10:53:02,261 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 1266 selfloop transitions, 580 changer transitions 4/1857 dead transitions. [2024-11-09 10:53:02,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1857 transitions, 54875 flow [2024-11-09 10:53:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:53:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:53:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-11-09 10:53:02,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-09 10:53:02,262 INFO L175 Difference]: Start difference. First operand has 384 places, 1832 transitions, 50768 flow. Second operand 12 states and 136 transitions. [2024-11-09 10:53:02,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1857 transitions, 54875 flow [2024-11-09 10:53:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1857 transitions, 54446 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-11-09 10:53:07,791 INFO L231 Difference]: Finished difference. Result has 387 places, 1832 transitions, 51536 flow [2024-11-09 10:53:07,792 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=50287, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=51536, PETRI_PLACES=387, PETRI_TRANSITIONS=1832} [2024-11-09 10:53:07,793 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 361 predicate places. [2024-11-09 10:53:07,793 INFO L471 AbstractCegarLoop]: Abstraction has has 387 places, 1832 transitions, 51536 flow [2024-11-09 10:53:07,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 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) [2024-11-09 10:53:07,793 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:53:07,793 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:53:07,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 10:53:07,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:53:07,994 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)] === [2024-11-09 10:53:07,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:53:07,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1857185175, now seen corresponding path program 15 times [2024-11-09 10:53:07,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:53:07,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360573527] [2024-11-09 10:53:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:53:07,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:53:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:53:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:08,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:53:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360573527] [2024-11-09 10:53:08,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360573527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:53:08,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375011059] [2024-11-09 10:53:08,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:53:08,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:53:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:53:08,124 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) [2024-11-09 10:53:08,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:53:08,176 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:53:08,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:53:08,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:53:08,180 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:53:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:08,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:53:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:53:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375011059] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:53:08,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:53:08,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 10:53:08,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740044028] [2024-11-09 10:53:08,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:53:08,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:53:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:53:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:53:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:53:08,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-09 10:53:08,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1832 transitions, 51536 flow. Second operand has 16 states, 16 states have (on average 8.0625) internal successors, (129), 16 states have internal predecessors, (129), 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) [2024-11-09 10:53:08,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:53:08,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-09 10:53:08,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:53:14,022 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 [] [2024-11-09 10:53:21,699 INFO L124 PetriNetUnfolderBase]: 9558/17584 cut-off events. [2024-11-09 10:53:21,699 INFO L125 PetriNetUnfolderBase]: For 653168/653272 co-relation queries the response was YES. [2024-11-09 10:53:21,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190940 conditions, 17584 events. 9558/17584 cut-off events. For 653168/653272 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 141210 event pairs, 705 based on Foata normal form. 173/17646 useless extension candidates. Maximal degree in co-relation 190584. Up to 4329 conditions per place. [2024-11-09 10:53:22,023 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 686 selfloop transitions, 2017 changer transitions 4/2714 dead transitions. [2024-11-09 10:53:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2714 transitions, 81774 flow [2024-11-09 10:53:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 10:53:22,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-09 10:53:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 356 transitions. [2024-11-09 10:53:22,024 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-09 10:53:22,024 INFO L175 Difference]: Start difference. First operand has 387 places, 1832 transitions, 51536 flow. Second operand 31 states and 356 transitions. [2024-11-09 10:53:22,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 2714 transitions, 81774 flow