./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:46:22,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:46:22,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:46:22,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:46:22,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:46:22,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:46:22,253 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:46:22,253 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:46:22,254 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:46:22,254 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:46:22,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:46:22,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:46:22,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:46:22,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:46:22,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:46:22,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:46:22,259 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:46:22,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:46:22,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:46:22,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:46:22,264 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:46:22,265 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:46:22,265 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:46:22,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:46:22,266 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:46:22,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:46:22,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:46:22,267 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:46:22,267 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:46:22,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:46:22,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:46:22,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:46:22,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:46:22,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:46:22,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:46:22,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:46:22,272 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:46:22,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:46:22,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:46:22,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:46:22,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:46:22,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:46:22,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-19 09:46:22,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:46:22,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:46:22,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:46:22,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:46:22,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:46:22,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-19 09:46:24,005 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:46:24,182 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:46:24,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-19 09:46:24,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236b4a462/13596c0969e24465acb81c5031770b89/FLAG7b1bede9c [2024-11-19 09:46:24,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236b4a462/13596c0969e24465acb81c5031770b89 [2024-11-19 09:46:24,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:46:24,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:46:24,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:46:24,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:46:24,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:46:24,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da56132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24, skipping insertion in model container [2024-11-19 09:46:24,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:46:24,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:46:24,851 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:46:24,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:46:24,884 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:46:24,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24 WrapperNode [2024-11-19 09:46:24,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:46:24,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:46:24,887 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:46:24,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:46:24,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,918 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-19 09:46:24,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:46:24,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:46:24,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:46:24,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:46:24,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,943 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]. [2024-11-19 09:46:24,944 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,944 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:46:24,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:46:24,963 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:46:24,963 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:46:24,964 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (1/1) ... [2024-11-19 09:46:24,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:46:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:25,000 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) [2024-11-19 09:46:25,016 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 [2024-11-19 09:46:25,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:46:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:46:25,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:46:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:46:25,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:46:25,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:46:25,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:46:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:46:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:46:25,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:46:25,061 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:46:25,185 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:46:25,188 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:46:25,353 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:46:25,353 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:46:25,489 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:46:25,489 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:46:25,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:25 BoogieIcfgContainer [2024-11-19 09:46:25,489 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:46:25,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:46:25,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:46:25,496 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:46:25,497 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:46:24" (1/3) ... [2024-11-19 09:46:25,497 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2811e740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:46:25, skipping insertion in model container [2024-11-19 09:46:25,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:24" (2/3) ... [2024-11-19 09:46:25,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2811e740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:46:25, skipping insertion in model container [2024-11-19 09:46:25,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:25" (3/3) ... [2024-11-19 09:46:25,500 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-19 09:46:25,517 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:46:25,517 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:46:25,517 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:46:25,561 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 09:46:25,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-11-19 09:46:25,626 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-11-19 09:46:25,627 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:46:25,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-19 09:46:25,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-11-19 09:46:25,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-11-19 09:46:25,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:46:25,651 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;@180e7fc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:46:25,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:46:25,665 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:46:25,666 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:46:25,666 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:46:25,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:25,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:25,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:25,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-11-19 09:46:25,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:25,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906443732] [2024-11-19 09:46:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906443732] [2024-11-19 09:46:26,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906443732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:26,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:46:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970948734] [2024-11-19 09:46:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:26,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:46:26,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:46:26,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:46:26,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:26,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:26,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:26,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:26,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:26,609 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-19 09:46:26,609 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:46:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-19 09:46:26,617 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-19 09:46:26,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-19 09:46:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:46:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:46:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-19 09:46:26,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 09:46:26,629 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-11-19 09:46:26,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-19 09:46:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 09:46:26,636 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-19 09:46:26,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-19 09:46:26,642 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-19 09:46:26,643 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-19 09:46:26,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:26,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:26,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:26,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:46:26,644 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:26,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-11-19 09:46:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:26,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18973027] [2024-11-19 09:46:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:26,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:26,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:26,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18973027] [2024-11-19 09:46:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18973027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:26,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:26,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:46:26,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510718388] [2024-11-19 09:46:26,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:26,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:26,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:26,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:26,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:26,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:26,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:26,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:27,065 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-19 09:46:27,065 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-19 09:46:27,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-19 09:46:27,074 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-19 09:46:27,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-19 09:46:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:46:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:46:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-11-19 09:46:27,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-11-19 09:46:27,076 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-11-19 09:46:27,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-19 09:46:27,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:27,081 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-19 09:46:27,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-19 09:46:27,082 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-11-19 09:46:27,082 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-19 09:46:27,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:27,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:27,083 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:27,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:46:27,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:27,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:27,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-11-19 09:46:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657841742] [2024-11-19 09:46:27,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:27,119 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:27,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:27,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:27,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657841742] [2024-11-19 09:46:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657841742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893446254] [2024-11-19 09:46:27,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:27,386 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) [2024-11-19 09:46:27,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:46:27,460 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:27,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:27,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:46:27,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:27,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893446254] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:27,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2024-11-19 09:46:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517508223] [2024-11-19 09:46:27,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:27,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:46:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:46:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:46:27,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:27,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:27,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:27,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:27,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:27,795 INFO L124 PetriNetUnfolderBase]: 581/828 cut-off events. [2024-11-19 09:46:27,796 INFO L125 PetriNetUnfolderBase]: For 837/837 co-relation queries the response was YES. [2024-11-19 09:46:27,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 828 events. 581/828 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2772 event pairs, 136 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 2009. Up to 484 conditions per place. [2024-11-19 09:46:27,805 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 55 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2024-11-19 09:46:27,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 64 transitions, 402 flow [2024-11-19 09:46:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:46:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:46:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-19 09:46:27,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-19 09:46:27,807 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 68 transitions. [2024-11-19 09:46:27,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 64 transitions, 402 flow [2024-11-19 09:46:27,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 64 transitions, 388 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:27,813 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 181 flow [2024-11-19 09:46:27,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2024-11-19 09:46:27,814 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-11-19 09:46:27,814 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 181 flow [2024-11-19 09:46:27,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:27,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:27,814 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:27,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:28,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:28,019 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:28,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-11-19 09:46:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9539112] [2024-11-19 09:46:28,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:28,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:28,034 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:28,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9539112] [2024-11-19 09:46:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9539112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:28,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:46:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954481769] [2024-11-19 09:46:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:28,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:46:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:46:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:46:28,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:28,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:28,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:28,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:28,232 INFO L124 PetriNetUnfolderBase]: 699/1017 cut-off events. [2024-11-19 09:46:28,233 INFO L125 PetriNetUnfolderBase]: For 1888/1888 co-relation queries the response was YES. [2024-11-19 09:46:28,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1017 events. 699/1017 cut-off events. For 1888/1888 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3803 event pairs, 177 based on Foata normal form. 46/1063 useless extension candidates. Maximal degree in co-relation 2587. Up to 563 conditions per place. [2024-11-19 09:46:28,240 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 54 selfloop transitions, 8 changer transitions 4/67 dead transitions. [2024-11-19 09:46:28,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 67 transitions, 455 flow [2024-11-19 09:46:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:46:28,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:46:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-19 09:46:28,241 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2024-11-19 09:46:28,241 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 181 flow. Second operand 4 states and 65 transitions. [2024-11-19 09:46:28,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 67 transitions, 455 flow [2024-11-19 09:46:28,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 440 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:28,248 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 224 flow [2024-11-19 09:46:28,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=224, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-19 09:46:28,249 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-11-19 09:46:28,250 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 224 flow [2024-11-19 09:46:28,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:28,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:28,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:28,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:46:28,250 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:28,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 300003609, now seen corresponding path program 4 times [2024-11-19 09:46:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:28,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958662816] [2024-11-19 09:46:28,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:28,262 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:28,262 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958662816] [2024-11-19 09:46:28,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958662816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:28,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060245298] [2024-11-19 09:46:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:28,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:28,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:28,342 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) [2024-11-19 09:46:28,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:46:28,409 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:28,409 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:28,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:46:28,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060245298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:28,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:28,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-19 09:46:28,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235237760] [2024-11-19 09:46:28,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:28,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:46:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:46:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:46:28,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:28,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 224 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:28,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:28,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:28,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:28,875 INFO L124 PetriNetUnfolderBase]: 994/1441 cut-off events. [2024-11-19 09:46:28,876 INFO L125 PetriNetUnfolderBase]: For 3658/3658 co-relation queries the response was YES. [2024-11-19 09:46:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1441 events. 994/1441 cut-off events. For 3658/3658 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5694 event pairs, 212 based on Foata normal form. 39/1480 useless extension candidates. Maximal degree in co-relation 4540. Up to 808 conditions per place. [2024-11-19 09:46:28,888 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 81 selfloop transitions, 41 changer transitions 8/131 dead transitions. [2024-11-19 09:46:28,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 131 transitions, 1100 flow [2024-11-19 09:46:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-11-19 09:46:28,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2024-11-19 09:46:28,890 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 224 flow. Second operand 10 states and 139 transitions. [2024-11-19 09:46:28,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 131 transitions, 1100 flow [2024-11-19 09:46:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 131 transitions, 996 flow, removed 39 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:28,900 INFO L231 Difference]: Finished difference. Result has 52 places, 71 transitions, 585 flow [2024-11-19 09:46:28,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=585, PETRI_PLACES=52, PETRI_TRANSITIONS=71} [2024-11-19 09:46:28,901 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-11-19 09:46:28,901 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 71 transitions, 585 flow [2024-11-19 09:46:28,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:28,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:28,902 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:28,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:46:29,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:29,103 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:29,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash -560455765, now seen corresponding path program 5 times [2024-11-19 09:46:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:29,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788769042] [2024-11-19 09:46:29,105 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:29,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:29,117 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:29,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788769042] [2024-11-19 09:46:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788769042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:29,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:29,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 09:46:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607447727] [2024-11-19 09:46:29,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:46:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:46:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:46:29,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:29,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 71 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:29,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:29,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:29,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:29,394 INFO L124 PetriNetUnfolderBase]: 1099/1618 cut-off events. [2024-11-19 09:46:29,394 INFO L125 PetriNetUnfolderBase]: For 6572/6572 co-relation queries the response was YES. [2024-11-19 09:46:29,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1618 events. 1099/1618 cut-off events. For 6572/6572 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6581 event pairs, 291 based on Foata normal form. 41/1659 useless extension candidates. Maximal degree in co-relation 5852. Up to 850 conditions per place. [2024-11-19 09:46:29,408 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 77 selfloop transitions, 24 changer transitions 7/109 dead transitions. [2024-11-19 09:46:29,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 109 transitions, 1062 flow [2024-11-19 09:46:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:46:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:46:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-11-19 09:46:29,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-19 09:46:29,409 INFO L175 Difference]: Start difference. First operand has 52 places, 71 transitions, 585 flow. Second operand 4 states and 62 transitions. [2024-11-19 09:46:29,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 109 transitions, 1062 flow [2024-11-19 09:46:29,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 1040 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:29,421 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 686 flow [2024-11-19 09:46:29,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=57, PETRI_TRANSITIONS=73} [2024-11-19 09:46:29,424 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-11-19 09:46:29,424 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 686 flow [2024-11-19 09:46:29,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:29,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:29,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:29,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:46:29,425 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:29,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:29,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1907411653, now seen corresponding path program 1 times [2024-11-19 09:46:29,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:29,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167768892] [2024-11-19 09:46:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167768892] [2024-11-19 09:46:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167768892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:46:29,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164963682] [2024-11-19 09:46:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:29,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:29,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:29,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:29,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:29,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:29,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:29,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:29,786 INFO L124 PetriNetUnfolderBase]: 1108/1719 cut-off events. [2024-11-19 09:46:29,787 INFO L125 PetriNetUnfolderBase]: For 10508/10508 co-relation queries the response was YES. [2024-11-19 09:46:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 1719 events. 1108/1719 cut-off events. For 10508/10508 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7972 event pairs, 391 based on Foata normal form. 102/1821 useless extension candidates. Maximal degree in co-relation 6466. Up to 1042 conditions per place. [2024-11-19 09:46:29,801 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 79 selfloop transitions, 13 changer transitions 16/109 dead transitions. [2024-11-19 09:46:29,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1137 flow [2024-11-19 09:46:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:46:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:46:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-11-19 09:46:29,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 09:46:29,803 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 686 flow. Second operand 5 states and 81 transitions. [2024-11-19 09:46:29,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1137 flow [2024-11-19 09:46:29,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 109 transitions, 1079 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:29,820 INFO L231 Difference]: Finished difference. Result has 62 places, 71 transitions, 689 flow [2024-11-19 09:46:29,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=62, PETRI_TRANSITIONS=71} [2024-11-19 09:46:29,821 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-11-19 09:46:29,821 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 71 transitions, 689 flow [2024-11-19 09:46:29,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:29,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:29,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:29,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:46:29,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:29,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:29,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1161909598, now seen corresponding path program 1 times [2024-11-19 09:46:29,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965129236] [2024-11-19 09:46:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:29,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:29,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965129236] [2024-11-19 09:46:29,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965129236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:29,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025778337] [2024-11-19 09:46:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:29,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:29,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:29,908 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) [2024-11-19 09:46:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:46:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:29,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 09:46:29,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025778337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:30,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:30,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-19 09:46:30,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100894258] [2024-11-19 09:46:30,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:30,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:30,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:30,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:46:30,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:30,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 71 transitions, 689 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2024-11-19 09:46:30,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:30,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:30,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:30,453 INFO L124 PetriNetUnfolderBase]: 1506/2311 cut-off events. [2024-11-19 09:46:30,453 INFO L125 PetriNetUnfolderBase]: For 15222/15222 co-relation queries the response was YES. [2024-11-19 09:46:30,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12217 conditions, 2311 events. 1506/2311 cut-off events. For 15222/15222 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11139 event pairs, 357 based on Foata normal form. 46/2357 useless extension candidates. Maximal degree in co-relation 10870. Up to 1333 conditions per place. [2024-11-19 09:46:30,471 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 141 selfloop transitions, 82 changer transitions 11/235 dead transitions. [2024-11-19 09:46:30,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 235 transitions, 2800 flow [2024-11-19 09:46:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-11-19 09:46:30,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5349794238683128 [2024-11-19 09:46:30,473 INFO L175 Difference]: Start difference. First operand has 62 places, 71 transitions, 689 flow. Second operand 9 states and 130 transitions. [2024-11-19 09:46:30,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 235 transitions, 2800 flow [2024-11-19 09:46:30,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 235 transitions, 2729 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:30,491 INFO L231 Difference]: Finished difference. Result has 72 places, 144 transitions, 1879 flow [2024-11-19 09:46:30,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1879, PETRI_PLACES=72, PETRI_TRANSITIONS=144} [2024-11-19 09:46:30,492 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-11-19 09:46:30,492 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 144 transitions, 1879 flow [2024-11-19 09:46:30,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2024-11-19 09:46:30,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:30,492 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:30,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:46:30,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:30,694 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:30,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 437956637, now seen corresponding path program 2 times [2024-11-19 09:46:30,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640287390] [2024-11-19 09:46:30,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:30,712 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:30,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640287390] [2024-11-19 09:46:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640287390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651715631] [2024-11-19 09:46:30,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:30,863 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) [2024-11-19 09:46:30,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:46:30,929 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:30,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:30,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:46:30,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:30,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651715631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2024-11-19 09:46:30,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177452743] [2024-11-19 09:46:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:30,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:46:30,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:30,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 144 transitions, 1879 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:30,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:30,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:30,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:31,373 INFO L124 PetriNetUnfolderBase]: 1515/2303 cut-off events. [2024-11-19 09:46:31,374 INFO L125 PetriNetUnfolderBase]: For 19795/19795 co-relation queries the response was YES. [2024-11-19 09:46:31,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13708 conditions, 2303 events. 1515/2303 cut-off events. For 19795/19795 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10751 event pairs, 289 based on Foata normal form. 100/2403 useless extension candidates. Maximal degree in co-relation 13057. Up to 968 conditions per place. [2024-11-19 09:46:31,396 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 81 selfloop transitions, 112 changer transitions 22/216 dead transitions. [2024-11-19 09:46:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 216 transitions, 2946 flow [2024-11-19 09:46:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-19 09:46:31,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2024-11-19 09:46:31,398 INFO L175 Difference]: Start difference. First operand has 72 places, 144 transitions, 1879 flow. Second operand 7 states and 110 transitions. [2024-11-19 09:46:31,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 216 transitions, 2946 flow [2024-11-19 09:46:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 216 transitions, 2804 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:31,433 INFO L231 Difference]: Finished difference. Result has 81 places, 159 transitions, 2374 flow [2024-11-19 09:46:31,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2374, PETRI_PLACES=81, PETRI_TRANSITIONS=159} [2024-11-19 09:46:31,434 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-11-19 09:46:31,434 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 159 transitions, 2374 flow [2024-11-19 09:46:31,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:31,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:31,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:31,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:46:31,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:31,639 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:31,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 617989597, now seen corresponding path program 3 times [2024-11-19 09:46:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:31,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123654609] [2024-11-19 09:46:31,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:31,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:31,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:31,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:31,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123654609] [2024-11-19 09:46:31,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123654609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:31,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979142245] [2024-11-19 09:46:31,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:31,755 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) [2024-11-19 09:46:31,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:46:31,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:31,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:31,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:46:31,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:31,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:31,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:31,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979142245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:31,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:31,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-19 09:46:31,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230460484] [2024-11-19 09:46:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:31,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:31,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:46:31,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:31,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 159 transitions, 2374 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:31,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:31,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:31,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:32,208 INFO L124 PetriNetUnfolderBase]: 1601/2424 cut-off events. [2024-11-19 09:46:32,209 INFO L125 PetriNetUnfolderBase]: For 20280/20280 co-relation queries the response was YES. [2024-11-19 09:46:32,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14709 conditions, 2424 events. 1601/2424 cut-off events. For 20280/20280 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11467 event pairs, 525 based on Foata normal form. 60/2484 useless extension candidates. Maximal degree in co-relation 14200. Up to 1887 conditions per place. [2024-11-19 09:46:32,230 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 153 selfloop transitions, 63 changer transitions 4/221 dead transitions. [2024-11-19 09:46:32,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 221 transitions, 3403 flow [2024-11-19 09:46:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:46:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:46:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-19 09:46:32,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-19 09:46:32,232 INFO L175 Difference]: Start difference. First operand has 81 places, 159 transitions, 2374 flow. Second operand 6 states and 87 transitions. [2024-11-19 09:46:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 221 transitions, 3403 flow [2024-11-19 09:46:32,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 221 transitions, 3014 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-11-19 09:46:32,269 INFO L231 Difference]: Finished difference. Result has 78 places, 180 transitions, 2500 flow [2024-11-19 09:46:32,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2500, PETRI_PLACES=78, PETRI_TRANSITIONS=180} [2024-11-19 09:46:32,270 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-11-19 09:46:32,271 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 180 transitions, 2500 flow [2024-11-19 09:46:32,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:32,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:32,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:32,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:46:32,471 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,SelfDestructingSolverStorable9 [2024-11-19 09:46:32,472 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:32,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1728401133, now seen corresponding path program 4 times [2024-11-19 09:46:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636868631] [2024-11-19 09:46:32,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:32,488 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:32,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:32,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:32,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636868631] [2024-11-19 09:46:32,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636868631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:32,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:32,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:46:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818812958] [2024-11-19 09:46:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:32,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 09:46:32,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:32,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 09:46:32,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 09:46:32,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:32,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 180 transitions, 2500 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:32,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:32,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:32,912 INFO L124 PetriNetUnfolderBase]: 1700/2520 cut-off events. [2024-11-19 09:46:32,913 INFO L125 PetriNetUnfolderBase]: For 17985/17985 co-relation queries the response was YES. [2024-11-19 09:46:32,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15841 conditions, 2520 events. 1700/2520 cut-off events. For 17985/17985 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11623 event pairs, 477 based on Foata normal form. 58/2578 useless extension candidates. Maximal degree in co-relation 13689. Up to 1847 conditions per place. [2024-11-19 09:46:32,930 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 163 selfloop transitions, 71 changer transitions 8/243 dead transitions. [2024-11-19 09:46:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 243 transitions, 3620 flow [2024-11-19 09:46:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:46:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:46:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-11-19 09:46:32,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2024-11-19 09:46:32,932 INFO L175 Difference]: Start difference. First operand has 78 places, 180 transitions, 2500 flow. Second operand 6 states and 88 transitions. [2024-11-19 09:46:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 243 transitions, 3620 flow [2024-11-19 09:46:33,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 243 transitions, 3510 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:33,015 INFO L231 Difference]: Finished difference. Result has 85 places, 203 transitions, 2966 flow [2024-11-19 09:46:33,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2966, PETRI_PLACES=85, PETRI_TRANSITIONS=203} [2024-11-19 09:46:33,018 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-11-19 09:46:33,018 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 203 transitions, 2966 flow [2024-11-19 09:46:33,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:33,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:46:33,019 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:33,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1155240756, now seen corresponding path program 1 times [2024-11-19 09:46:33,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448578653] [2024-11-19 09:46:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:33,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448578653] [2024-11-19 09:46:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448578653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309817653] [2024-11-19 09:46:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:33,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:33,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:33,115 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) [2024-11-19 09:46:33,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:46:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:33,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 09:46:33,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309817653] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-11-19 09:46:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658332913] [2024-11-19 09:46:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:33,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:46:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:46:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:46:33,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:33,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 203 transitions, 2966 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-19 09:46:33,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:33,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:33,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:33,574 INFO L124 PetriNetUnfolderBase]: 1713/2463 cut-off events. [2024-11-19 09:46:33,575 INFO L125 PetriNetUnfolderBase]: For 19586/19586 co-relation queries the response was YES. [2024-11-19 09:46:33,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16496 conditions, 2463 events. 1713/2463 cut-off events. For 19586/19586 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 10626 event pairs, 230 based on Foata normal form. 50/2513 useless extension candidates. Maximal degree in co-relation 14343. Up to 1958 conditions per place. [2024-11-19 09:46:33,597 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 198 selfloop transitions, 44 changer transitions 1/244 dead transitions. [2024-11-19 09:46:33,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 244 transitions, 3880 flow [2024-11-19 09:46:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:46:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:46:33,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-19 09:46:33,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-19 09:46:33,598 INFO L175 Difference]: Start difference. First operand has 85 places, 203 transitions, 2966 flow. Second operand 4 states and 64 transitions. [2024-11-19 09:46:33,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 244 transitions, 3880 flow [2024-11-19 09:46:33,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 244 transitions, 3604 flow, removed 118 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:33,651 INFO L231 Difference]: Finished difference. Result has 87 places, 210 transitions, 2951 flow [2024-11-19 09:46:33,652 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2951, PETRI_PLACES=87, PETRI_TRANSITIONS=210} [2024-11-19 09:46:33,652 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-11-19 09:46:33,652 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 210 transitions, 2951 flow [2024-11-19 09:46:33,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-19 09:46:33,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:46:33,853 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 [2024-11-19 09:46:33,854 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:33,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash -719187512, now seen corresponding path program 1 times [2024-11-19 09:46:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28281417] [2024-11-19 09:46:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:33,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28281417] [2024-11-19 09:46:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28281417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:34,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386435039] [2024-11-19 09:46:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:34,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:34,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:34,099 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) [2024-11-19 09:46:34,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:46:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:34,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:34,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:34,284 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:34,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386435039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:34,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-19 09:46:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155293005] [2024-11-19 09:46:34,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:34,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:46:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:46:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:34,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:34,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 210 transitions, 2951 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-11-19 09:46:34,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:34,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:34,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:35,447 INFO L124 PetriNetUnfolderBase]: 2373/3421 cut-off events. [2024-11-19 09:46:35,447 INFO L125 PetriNetUnfolderBase]: For 25773/25773 co-relation queries the response was YES. [2024-11-19 09:46:35,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21679 conditions, 3421 events. 2373/3421 cut-off events. For 25773/25773 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15525 event pairs, 215 based on Foata normal form. 2/3423 useless extension candidates. Maximal degree in co-relation 18596. Up to 2604 conditions per place. [2024-11-19 09:46:35,474 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 235 selfloop transitions, 91 changer transitions 2/329 dead transitions. [2024-11-19 09:46:35,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 329 transitions, 4738 flow [2024-11-19 09:46:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-19 09:46:35,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-11-19 09:46:35,476 INFO L175 Difference]: Start difference. First operand has 87 places, 210 transitions, 2951 flow. Second operand 9 states and 143 transitions. [2024-11-19 09:46:35,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 329 transitions, 4738 flow [2024-11-19 09:46:35,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 329 transitions, 4695 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:35,530 INFO L231 Difference]: Finished difference. Result has 96 places, 269 transitions, 4065 flow [2024-11-19 09:46:35,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2908, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4065, PETRI_PLACES=96, PETRI_TRANSITIONS=269} [2024-11-19 09:46:35,531 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-11-19 09:46:35,531 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 269 transitions, 4065 flow [2024-11-19 09:46:35,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-11-19 09:46:35,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:35,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:35,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:46:35,736 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 [2024-11-19 09:46:35,737 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:35,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-11-19 09:46:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2935135] [2024-11-19 09:46:35,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:35,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:35,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:35,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2935135] [2024-11-19 09:46:35,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2935135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:35,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428126666] [2024-11-19 09:46:35,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:35,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:35,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:35,901 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) [2024-11-19 09:46:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:46:35,963 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:35,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:35,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:35,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:36,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:36,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428126666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:36,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:36,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-19 09:46:36,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030092305] [2024-11-19 09:46:36,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:36,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:46:36,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:36,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:46:36,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:36,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:36,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 269 transitions, 4065 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-11-19 09:46:36,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:36,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:37,211 INFO L124 PetriNetUnfolderBase]: 2669/3853 cut-off events. [2024-11-19 09:46:37,211 INFO L125 PetriNetUnfolderBase]: For 33593/33593 co-relation queries the response was YES. [2024-11-19 09:46:37,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25849 conditions, 3853 events. 2669/3853 cut-off events. For 33593/33593 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 17749 event pairs, 324 based on Foata normal form. 2/3855 useless extension candidates. Maximal degree in co-relation 25260. Up to 3211 conditions per place. [2024-11-19 09:46:37,238 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 257 selfloop transitions, 82 changer transitions 2/342 dead transitions. [2024-11-19 09:46:37,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 342 transitions, 5326 flow [2024-11-19 09:46:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-19 09:46:37,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-19 09:46:37,240 INFO L175 Difference]: Start difference. First operand has 96 places, 269 transitions, 4065 flow. Second operand 9 states and 140 transitions. [2024-11-19 09:46:37,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 342 transitions, 5326 flow [2024-11-19 09:46:37,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 342 transitions, 5112 flow, removed 91 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:37,315 INFO L231 Difference]: Finished difference. Result has 106 places, 288 transitions, 4339 flow [2024-11-19 09:46:37,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4339, PETRI_PLACES=106, PETRI_TRANSITIONS=288} [2024-11-19 09:46:37,316 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-11-19 09:46:37,317 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 288 transitions, 4339 flow [2024-11-19 09:46:37,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-11-19 09:46:37,317 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:37,317 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:37,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:37,518 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 [2024-11-19 09:46:37,518 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:37,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1216295326, now seen corresponding path program 3 times [2024-11-19 09:46:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496447264] [2024-11-19 09:46:37,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:37,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:37,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:37,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:37,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496447264] [2024-11-19 09:46:37,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496447264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:37,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228163556] [2024-11-19 09:46:37,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:37,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:37,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:37,683 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) [2024-11-19 09:46:37,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:46:37,743 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:37,743 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:37,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:37,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:37,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228163556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:38,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-19 09:46:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397352908] [2024-11-19 09:46:38,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:38,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 09:46:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 09:46:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:46:38,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:38,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 288 transitions, 4339 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:38,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:38,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:39,068 INFO L124 PetriNetUnfolderBase]: 3295/4769 cut-off events. [2024-11-19 09:46:39,068 INFO L125 PetriNetUnfolderBase]: For 43037/43037 co-relation queries the response was YES. [2024-11-19 09:46:39,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31882 conditions, 4769 events. 3295/4769 cut-off events. For 43037/43037 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22866 event pairs, 476 based on Foata normal form. 2/4771 useless extension candidates. Maximal degree in co-relation 31377. Up to 4004 conditions per place. [2024-11-19 09:46:39,107 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 309 selfloop transitions, 90 changer transitions 2/402 dead transitions. [2024-11-19 09:46:39,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 402 transitions, 6349 flow [2024-11-19 09:46:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:39,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-11-19 09:46:39,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-11-19 09:46:39,109 INFO L175 Difference]: Start difference. First operand has 106 places, 288 transitions, 4339 flow. Second operand 9 states and 140 transitions. [2024-11-19 09:46:39,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 402 transitions, 6349 flow [2024-11-19 09:46:39,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 402 transitions, 6145 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:39,186 INFO L231 Difference]: Finished difference. Result has 116 places, 346 transitions, 5364 flow [2024-11-19 09:46:39,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4135, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5364, PETRI_PLACES=116, PETRI_TRANSITIONS=346} [2024-11-19 09:46:39,186 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-11-19 09:46:39,187 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 346 transitions, 5364 flow [2024-11-19 09:46:39,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:39,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:39,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:39,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:46:39,387 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 [2024-11-19 09:46:39,388 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:39,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -362409600, now seen corresponding path program 4 times [2024-11-19 09:46:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015398048] [2024-11-19 09:46:39,388 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:39,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:39,400 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:39,400 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015398048] [2024-11-19 09:46:39,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015398048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:39,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603632217] [2024-11-19 09:46:39,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:39,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:39,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:39,575 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) [2024-11-19 09:46:39,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:46:39,638 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:39,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:39,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:39,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:39,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:40,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603632217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:40,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-19 09:46:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232403991] [2024-11-19 09:46:40,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:40,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 09:46:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 09:46:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:40,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:40,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 346 transitions, 5364 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:40,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:40,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:40,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:40,966 INFO L124 PetriNetUnfolderBase]: 3603/5213 cut-off events. [2024-11-19 09:46:40,966 INFO L125 PetriNetUnfolderBase]: For 50031/50031 co-relation queries the response was YES. [2024-11-19 09:46:40,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35671 conditions, 5213 events. 3603/5213 cut-off events. For 50031/50031 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 25322 event pairs, 598 based on Foata normal form. 2/5215 useless extension candidates. Maximal degree in co-relation 35129. Up to 4612 conditions per place. [2024-11-19 09:46:41,003 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 333 selfloop transitions, 82 changer transitions 2/418 dead transitions. [2024-11-19 09:46:41,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 418 transitions, 6886 flow [2024-11-19 09:46:41,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:41,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-11-19 09:46:41,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-11-19 09:46:41,005 INFO L175 Difference]: Start difference. First operand has 116 places, 346 transitions, 5364 flow. Second operand 9 states and 136 transitions. [2024-11-19 09:46:41,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 418 transitions, 6886 flow [2024-11-19 09:46:41,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 418 transitions, 6592 flow, removed 131 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:41,091 INFO L231 Difference]: Finished difference. Result has 126 places, 368 transitions, 5663 flow [2024-11-19 09:46:41,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5070, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5663, PETRI_PLACES=126, PETRI_TRANSITIONS=368} [2024-11-19 09:46:41,092 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-11-19 09:46:41,092 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 368 transitions, 5663 flow [2024-11-19 09:46:41,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:41,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:41,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:41,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:41,292 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 [2024-11-19 09:46:41,293 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:41,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 309789056, now seen corresponding path program 5 times [2024-11-19 09:46:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429195052] [2024-11-19 09:46:41,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:41,306 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:46:41,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:41,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429195052] [2024-11-19 09:46:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429195052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527281643] [2024-11-19 09:46:41,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:41,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:41,450 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) [2024-11-19 09:46:41,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:46:41,518 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:46:41,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:41,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:41,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:41,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:42,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527281643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:42,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:42,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-19 09:46:42,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783733993] [2024-11-19 09:46:42,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:42,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:46:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:46:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:42,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:42,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 368 transitions, 5663 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:42,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:42,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:42,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:43,645 INFO L124 PetriNetUnfolderBase]: 3985/5756 cut-off events. [2024-11-19 09:46:43,645 INFO L125 PetriNetUnfolderBase]: For 55753/55753 co-relation queries the response was YES. [2024-11-19 09:46:43,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39281 conditions, 5756 events. 3985/5756 cut-off events. For 55753/55753 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 28323 event pairs, 761 based on Foata normal form. 1/5757 useless extension candidates. Maximal degree in co-relation 38695. Up to 5277 conditions per place. [2024-11-19 09:46:43,686 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 373 selfloop transitions, 72 changer transitions 1/447 dead transitions. [2024-11-19 09:46:43,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 447 transitions, 7476 flow [2024-11-19 09:46:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:46:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:46:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-11-19 09:46:43,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-11-19 09:46:43,688 INFO L175 Difference]: Start difference. First operand has 126 places, 368 transitions, 5663 flow. Second operand 8 states and 118 transitions. [2024-11-19 09:46:43,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 447 transitions, 7476 flow [2024-11-19 09:46:43,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 447 transitions, 7211 flow, removed 97 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:43,794 INFO L231 Difference]: Finished difference. Result has 134 places, 408 transitions, 6315 flow [2024-11-19 09:46:43,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5398, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6315, PETRI_PLACES=134, PETRI_TRANSITIONS=408} [2024-11-19 09:46:43,794 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-11-19 09:46:43,794 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 408 transitions, 6315 flow [2024-11-19 09:46:43,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:43,795 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:43,795 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:43,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:43,995 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 [2024-11-19 09:46:43,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:43,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:43,996 INFO L85 PathProgramCache]: Analyzing trace with hash -954910626, now seen corresponding path program 6 times [2024-11-19 09:46:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:43,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160683567] [2024-11-19 09:46:43,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:44,013 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:44,013 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:44,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160683567] [2024-11-19 09:46:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160683567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827838066] [2024-11-19 09:46:44,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:44,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:44,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:44,163 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) [2024-11-19 09:46:44,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:46:44,224 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:44,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:44,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 09:46:44,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:44,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:44,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827838066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:45,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-19 09:46:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909571895] [2024-11-19 09:46:45,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:45,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:46:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:46:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:45,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:45,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 408 transitions, 6315 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:45,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:45,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:46,181 INFO L124 PetriNetUnfolderBase]: 4281/6188 cut-off events. [2024-11-19 09:46:46,182 INFO L125 PetriNetUnfolderBase]: For 62805/62805 co-relation queries the response was YES. [2024-11-19 09:46:46,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42688 conditions, 6188 events. 4281/6188 cut-off events. For 62805/62805 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 30849 event pairs, 868 based on Foata normal form. 2/6190 useless extension candidates. Maximal degree in co-relation 42078. Up to 5642 conditions per place. [2024-11-19 09:46:46,222 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 397 selfloop transitions, 73 changer transitions 2/473 dead transitions. [2024-11-19 09:46:46,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 473 transitions, 7942 flow [2024-11-19 09:46:46,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:46:46,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:46:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-11-19 09:46:46,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 09:46:46,223 INFO L175 Difference]: Start difference. First operand has 134 places, 408 transitions, 6315 flow. Second operand 9 states and 135 transitions. [2024-11-19 09:46:46,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 473 transitions, 7942 flow [2024-11-19 09:46:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 473 transitions, 7634 flow, removed 138 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:46,438 INFO L231 Difference]: Finished difference. Result has 144 places, 427 transitions, 6594 flow [2024-11-19 09:46:46,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6007, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6594, PETRI_PLACES=144, PETRI_TRANSITIONS=427} [2024-11-19 09:46:46,439 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-11-19 09:46:46,439 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 427 transitions, 6594 flow [2024-11-19 09:46:46,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:46,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:46,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:46,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:46:46,640 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 [2024-11-19 09:46:46,640 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:46,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 313622787, now seen corresponding path program 7 times [2024-11-19 09:46:46,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:46,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384082755] [2024-11-19 09:46:46,641 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:46,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:46,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:46,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384082755] [2024-11-19 09:46:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384082755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:46,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903095441] [2024-11-19 09:46:46,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:46,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:46,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:46,770 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) [2024-11-19 09:46:46,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:46:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:46,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:46:46,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:46,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:46,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903095441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:46,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:46,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 09:46:46,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285556182] [2024-11-19 09:46:46,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:46,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:46:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:46,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:46:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:46,937 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:46,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 427 transitions, 6594 flow. Second operand has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2024-11-19 09:46:46,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:46,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:46,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:48,584 INFO L124 PetriNetUnfolderBase]: 6544/9303 cut-off events. [2024-11-19 09:46:48,584 INFO L125 PetriNetUnfolderBase]: For 104365/104365 co-relation queries the response was YES. [2024-11-19 09:46:48,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64200 conditions, 9303 events. 6544/9303 cut-off events. For 104365/104365 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 47808 event pairs, 537 based on Foata normal form. 88/9391 useless extension candidates. Maximal degree in co-relation 62927. Up to 2672 conditions per place. [2024-11-19 09:46:48,644 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 760 selfloop transitions, 167 changer transitions 0/928 dead transitions. [2024-11-19 09:46:48,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 928 transitions, 15180 flow [2024-11-19 09:46:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 09:46:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 09:46:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-11-19 09:46:48,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-11-19 09:46:48,646 INFO L175 Difference]: Start difference. First operand has 144 places, 427 transitions, 6594 flow. Second operand 13 states and 204 transitions. [2024-11-19 09:46:48,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 928 transitions, 15180 flow [2024-11-19 09:46:48,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 928 transitions, 14458 flow, removed 329 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:48,844 INFO L231 Difference]: Finished difference. Result has 161 places, 517 transitions, 7927 flow [2024-11-19 09:46:48,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7927, PETRI_PLACES=161, PETRI_TRANSITIONS=517} [2024-11-19 09:46:48,844 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-11-19 09:46:48,845 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 517 transitions, 7927 flow [2024-11-19 09:46:48,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.833333333333333) internal successors, (94), 12 states have internal predecessors, (94), 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) [2024-11-19 09:46:48,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:48,845 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:48,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 09:46:49,045 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 [2024-11-19 09:46:49,045 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:49,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1195007738, now seen corresponding path program 8 times [2024-11-19 09:46:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695836297] [2024-11-19 09:46:49,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:49,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:49,054 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:49,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:49,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:49,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695836297] [2024-11-19 09:46:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695836297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:49,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617741074] [2024-11-19 09:46:49,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:49,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:49,135 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) [2024-11-19 09:46:49,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 09:46:49,191 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:49,192 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:49,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:46:49,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:49,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617741074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:49,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:49,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 09:46:49,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121923731] [2024-11-19 09:46:49,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:49,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:46:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:46:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:46:49,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:49,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 517 transitions, 7927 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:49,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:49,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:49,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:51,551 INFO L124 PetriNetUnfolderBase]: 7686/10765 cut-off events. [2024-11-19 09:46:51,552 INFO L125 PetriNetUnfolderBase]: For 153562/153562 co-relation queries the response was YES. [2024-11-19 09:46:51,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82572 conditions, 10765 events. 7686/10765 cut-off events. For 153562/153562 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 54252 event pairs, 1636 based on Foata normal form. 140/10905 useless extension candidates. Maximal degree in co-relation 80991. Up to 7441 conditions per place. [2024-11-19 09:46:51,657 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 659 selfloop transitions, 309 changer transitions 0/969 dead transitions. [2024-11-19 09:46:51,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 969 transitions, 15996 flow [2024-11-19 09:46:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:46:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:46:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 267 transitions. [2024-11-19 09:46:51,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5493827160493827 [2024-11-19 09:46:51,660 INFO L175 Difference]: Start difference. First operand has 161 places, 517 transitions, 7927 flow. Second operand 18 states and 267 transitions. [2024-11-19 09:46:51,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 969 transitions, 15996 flow [2024-11-19 09:46:52,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 969 transitions, 15412 flow, removed 256 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:52,224 INFO L231 Difference]: Finished difference. Result has 184 places, 692 transitions, 10856 flow [2024-11-19 09:46:52,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10856, PETRI_PLACES=184, PETRI_TRANSITIONS=692} [2024-11-19 09:46:52,225 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-11-19 09:46:52,225 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 692 transitions, 10856 flow [2024-11-19 09:46:52,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:52,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:52,225 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:52,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 09:46:52,426 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 [2024-11-19 09:46:52,426 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:52,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -815916599, now seen corresponding path program 9 times [2024-11-19 09:46:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:52,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72499475] [2024-11-19 09:46:52,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:52,436 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:52,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:52,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72499475] [2024-11-19 09:46:52,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72499475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:52,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776107645] [2024-11-19 09:46:52,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:52,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:52,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:52,551 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) [2024-11-19 09:46:52,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 09:46:52,607 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:52,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:52,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:46:52,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:52,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:46:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776107645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:52,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 09:46:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790951238] [2024-11-19 09:46:52,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:52,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 09:46:52,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 09:46:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:46:52,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:52,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 692 transitions, 10856 flow. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 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) [2024-11-19 09:46:52,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:52,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:52,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:55,482 INFO L124 PetriNetUnfolderBase]: 8977/12477 cut-off events. [2024-11-19 09:46:55,483 INFO L125 PetriNetUnfolderBase]: For 208726/208726 co-relation queries the response was YES. [2024-11-19 09:46:55,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100618 conditions, 12477 events. 8977/12477 cut-off events. For 208726/208726 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 63502 event pairs, 1644 based on Foata normal form. 213/12690 useless extension candidates. Maximal degree in co-relation 98608. Up to 8245 conditions per place. [2024-11-19 09:46:55,582 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 780 selfloop transitions, 384 changer transitions 0/1165 dead transitions. [2024-11-19 09:46:55,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1165 transitions, 21098 flow [2024-11-19 09:46:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 09:46:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 09:46:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 217 transitions. [2024-11-19 09:46:55,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-11-19 09:46:55,584 INFO L175 Difference]: Start difference. First operand has 184 places, 692 transitions, 10856 flow. Second operand 16 states and 217 transitions. [2024-11-19 09:46:55,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1165 transitions, 21098 flow [2024-11-19 09:46:56,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1165 transitions, 19831 flow, removed 518 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:56,654 INFO L231 Difference]: Finished difference. Result has 207 places, 898 transitions, 14776 flow [2024-11-19 09:46:56,655 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=10314, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14776, PETRI_PLACES=207, PETRI_TRANSITIONS=898} [2024-11-19 09:46:56,655 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-11-19 09:46:56,655 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 898 transitions, 14776 flow [2024-11-19 09:46:56,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 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) [2024-11-19 09:46:56,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:56,655 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:56,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:56,856 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 [2024-11-19 09:46:56,856 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:56,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash -956374293, now seen corresponding path program 10 times [2024-11-19 09:46:56,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:56,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284728107] [2024-11-19 09:46:56,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:56,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:56,868 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:56,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:56,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284728107] [2024-11-19 09:46:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284728107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810132587] [2024-11-19 09:46:56,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:56,994 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) [2024-11-19 09:46:56,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 09:46:57,050 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:57,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:57,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:46:57,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:57,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810132587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:57,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:57,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-19 09:46:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42621816] [2024-11-19 09:46:57,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:57,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:46:57,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:46:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:46:57,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:57,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 898 transitions, 14776 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 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) [2024-11-19 09:46:57,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:57,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:57,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:04,050 INFO L124 PetriNetUnfolderBase]: 12728/17375 cut-off events. [2024-11-19 09:47:04,050 INFO L125 PetriNetUnfolderBase]: For 374901/374901 co-relation queries the response was YES. [2024-11-19 09:47:04,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157945 conditions, 17375 events. 12728/17375 cut-off events. For 374901/374901 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 90217 event pairs, 1117 based on Foata normal form. 742/18117 useless extension candidates. Maximal degree in co-relation 155584. Up to 7368 conditions per place. [2024-11-19 09:47:04,267 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 959 selfloop transitions, 1476 changer transitions 1/2437 dead transitions. [2024-11-19 09:47:04,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 2437 transitions, 46172 flow [2024-11-19 09:47:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-19 09:47:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2024-11-19 09:47:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 1327 transitions. [2024-11-19 09:47:04,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4427761094427761 [2024-11-19 09:47:04,273 INFO L175 Difference]: Start difference. First operand has 207 places, 898 transitions, 14776 flow. Second operand 111 states and 1327 transitions. [2024-11-19 09:47:04,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 2437 transitions, 46172 flow [2024-11-19 09:47:06,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 2437 transitions, 43936 flow, removed 1061 selfloop flow, removed 3 redundant places. [2024-11-19 09:47:06,379 INFO L231 Difference]: Finished difference. Result has 389 places, 1970 transitions, 39463 flow [2024-11-19 09:47:06,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14089, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=552, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=39463, PETRI_PLACES=389, PETRI_TRANSITIONS=1970} [2024-11-19 09:47:06,380 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-11-19 09:47:06,381 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 1970 transitions, 39463 flow [2024-11-19 09:47:06,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 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) [2024-11-19 09:47:06,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:06,381 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:06,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:06,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 09:47:06,582 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:06,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1298869353, now seen corresponding path program 11 times [2024-11-19 09:47:06,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132302547] [2024-11-19 09:47:06,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:06,589 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:06,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132302547] [2024-11-19 09:47:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132302547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285776091] [2024-11-19 09:47:06,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:06,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:06,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:06,651 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:06,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 09:47:06,702 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:06,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:06,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 09:47:06,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:06,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:06,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285776091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:06,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:06,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-19 09:47:06,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699341120] [2024-11-19 09:47:06,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:06,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 09:47:06,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 09:47:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:47:06,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:06,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1970 transitions, 39463 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2024-11-19 09:47:06,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:06,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:06,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:14,378 INFO L124 PetriNetUnfolderBase]: 13257/18294 cut-off events. [2024-11-19 09:47:14,378 INFO L125 PetriNetUnfolderBase]: For 628847/628847 co-relation queries the response was YES. [2024-11-19 09:47:14,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189925 conditions, 18294 events. 13257/18294 cut-off events. For 628847/628847 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 98463 event pairs, 1646 based on Foata normal form. 126/18420 useless extension candidates. Maximal degree in co-relation 189584. Up to 9627 conditions per place. [2024-11-19 09:47:14,620 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 1728 selfloop transitions, 480 changer transitions 31/2240 dead transitions. [2024-11-19 09:47:14,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 2240 transitions, 48501 flow [2024-11-19 09:47:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:47:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:47:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-11-19 09:47:14,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-19 09:47:14,621 INFO L175 Difference]: Start difference. First operand has 389 places, 1970 transitions, 39463 flow. Second operand 6 states and 94 transitions. [2024-11-19 09:47:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 2240 transitions, 48501 flow [2024-11-19 09:47:22,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 2240 transitions, 40494 flow, removed 3783 selfloop flow, removed 6 redundant places. [2024-11-19 09:47:22,138 INFO L231 Difference]: Finished difference. Result has 388 places, 2022 transitions, 33889 flow [2024-11-19 09:47:22,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=31535, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=412, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=33889, PETRI_PLACES=388, PETRI_TRANSITIONS=2022} [2024-11-19 09:47:22,141 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2024-11-19 09:47:22,141 INFO L471 AbstractCegarLoop]: Abstraction has has 388 places, 2022 transitions, 33889 flow [2024-11-19 09:47:22,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 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) [2024-11-19 09:47:22,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:22,141 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:22,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:22,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:22,342 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:22,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 256467283, now seen corresponding path program 12 times [2024-11-19 09:47:22,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152721283] [2024-11-19 09:47:22,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:47:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:22,352 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:47:22,352 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152721283] [2024-11-19 09:47:22,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152721283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894464212] [2024-11-19 09:47:22,476 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:47:22,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:22,477 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:22,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 09:47:22,535 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:47:22,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:22,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:47:22,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:22,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:22,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894464212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:22,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2024-11-19 09:47:22,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137744294] [2024-11-19 09:47:22,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:22,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:47:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:22,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:47:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:47:22,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:22,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 2022 transitions, 33889 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2024-11-19 09:47:22,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:22,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:22,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:33,252 INFO L124 PetriNetUnfolderBase]: 19424/26395 cut-off events. [2024-11-19 09:47:33,253 INFO L125 PetriNetUnfolderBase]: For 952799/952799 co-relation queries the response was YES. [2024-11-19 09:47:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278991 conditions, 26395 events. 19424/26395 cut-off events. For 952799/952799 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 143272 event pairs, 1034 based on Foata normal form. 378/26773 useless extension candidates. Maximal degree in co-relation 277922. Up to 8805 conditions per place. [2024-11-19 09:47:33,791 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 2785 selfloop transitions, 1335 changer transitions 1/4122 dead transitions. [2024-11-19 09:47:33,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 4122 transitions, 81982 flow [2024-11-19 09:47:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 09:47:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 09:47:33,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 309 transitions. [2024-11-19 09:47:33,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4975845410628019 [2024-11-19 09:47:33,793 INFO L175 Difference]: Start difference. First operand has 388 places, 2022 transitions, 33889 flow. Second operand 23 states and 309 transitions. [2024-11-19 09:47:33,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 4122 transitions, 81982 flow [2024-11-19 09:47:44,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 4122 transitions, 80047 flow, removed 163 selfloop flow, removed 3 redundant places. [2024-11-19 09:47:44,247 INFO L231 Difference]: Finished difference. Result has 421 places, 2787 transitions, 52118 flow [2024-11-19 09:47:44,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=33052, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=708, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=52118, PETRI_PLACES=421, PETRI_TRANSITIONS=2787} [2024-11-19 09:47:44,249 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2024-11-19 09:47:44,249 INFO L471 AbstractCegarLoop]: Abstraction has has 421 places, 2787 transitions, 52118 flow [2024-11-19 09:47:44,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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) [2024-11-19 09:47:44,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:44,250 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:44,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:44,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:44,450 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:44,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1547311115, now seen corresponding path program 13 times [2024-11-19 09:47:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403165044] [2024-11-19 09:47:44,451 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:47:44,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403165044] [2024-11-19 09:47:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403165044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877913821] [2024-11-19 09:47:44,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:47:44,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:44,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:44,564 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:44,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 09:47:44,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:47:44,624 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 09:47:44,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:44,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:47:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877913821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:44,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:44,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 09:47:44,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961482372] [2024-11-19 09:47:44,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:44,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 09:47:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 09:47:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:47:44,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:44,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 2787 transitions, 52118 flow. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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) [2024-11-19 09:47:44,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:44,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:44,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand