./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:38:15,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:38:15,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:38:15,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:38:15,255 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:38:15,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:38:15,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:38:15,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:38:15,294 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:38:15,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:38:15,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:38:15,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:38:15,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:38:15,298 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:38:15,299 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:38:15,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:38:15,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:38:15,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:38:15,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:38:15,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:38:15,301 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:38:15,305 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:38:15,305 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:38:15,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:38:15,306 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:38:15,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:38:15,306 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:38:15,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:38:15,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:38:15,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:38:15,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:38:15,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:38:15,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:38:15,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:15,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:38:15,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:38:15,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:38:15,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:38:15,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:38:15,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:38:15,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:38:15,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:38:15,320 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-10-13 12:38:15,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:38:15,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:38:15,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:38:15,614 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:38:15,615 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:38:15,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-10-13 12:38:17,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:38:17,316 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:38:17,316 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-10-13 12:38:17,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d66dd224/75a2dc076b524e5dbaebf7d90e4680c5/FLAG99cdeabae [2024-10-13 12:38:17,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d66dd224/75a2dc076b524e5dbaebf7d90e4680c5 [2024-10-13 12:38:17,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:38:17,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:38:17,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:17,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:38:17,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:38:17,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45349e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17, skipping insertion in model container [2024-10-13 12:38:17,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,373 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:38:17,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:17,591 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:38:17,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:17,632 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:38:17,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17 WrapperNode [2024-10-13 12:38:17,634 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:17,635 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:17,635 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:38:17,635 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:38:17,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,669 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-10-13 12:38:17,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:17,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:38:17,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:38:17,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:38:17,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,706 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]. [2024-10-13 12:38:17,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:38:17,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:38:17,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:38:17,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:38:17,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (1/1) ... [2024-10-13 12:38:17,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:17,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:17,773 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) [2024-10-13 12:38:17,776 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 [2024-10-13 12:38:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:38:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:38:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:38:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:38:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:38:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:38:17,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:38:17,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:38:17,827 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:38:17,909 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:38:17,910 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:38:18,068 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:38:18,068 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:38:18,195 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:38:18,195 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 12:38:18,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:18 BoogieIcfgContainer [2024-10-13 12:38:18,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:38:18,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:38:18,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:38:18,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:38:18,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:38:17" (1/3) ... [2024-10-13 12:38:18,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e90cc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:18, skipping insertion in model container [2024-10-13 12:38:18,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:17" (2/3) ... [2024-10-13 12:38:18,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e90cc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:18, skipping insertion in model container [2024-10-13 12:38:18,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:18" (3/3) ... [2024-10-13 12:38:18,204 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-10-13 12:38:18,217 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:38:18,218 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:38:18,218 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:38:18,264 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:38:18,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-10-13 12:38:18,325 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-10-13 12:38:18,325 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:38:18,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-10-13 12:38:18,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-10-13 12:38:18,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-10-13 12:38:18,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:38:18,353 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;@7863613a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:38:18,353 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-13 12:38:18,370 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:38:18,371 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-13 12:38:18,371 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:38:18,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:18,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:18,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:18,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:18,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1555143576, now seen corresponding path program 1 times [2024-10-13 12:38:18,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247404004] [2024-10-13 12:38:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:18,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:19,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247404004] [2024-10-13 12:38:19,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247404004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:19,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:19,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:38:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174930543] [2024-10-13 12:38:19,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:19,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:38:19,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:19,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:38:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:38:19,139 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:19,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:19,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:19,252 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-10-13 12:38:19,253 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 12:38:19,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-10-13 12:38:19,257 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-10-13 12:38:19,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-10-13 12:38:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:38:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:38:19,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-10-13 12:38:19,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-13 12:38:19,273 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-10-13 12:38:19,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-10-13 12:38:19,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:19,279 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-10-13 12:38:19,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2024-10-13 12:38:19,285 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-10-13 12:38:19,286 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-10-13 12:38:19,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:19,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:19,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:19,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:38:19,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 546641926, now seen corresponding path program 1 times [2024-10-13 12:38:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136306442] [2024-10-13 12:38:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136306442] [2024-10-13 12:38:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136306442] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131574559] [2024-10-13 12:38:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:19,696 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) [2024-10-13 12:38:19,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:38:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:19,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:19,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:19,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131574559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:20,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:20,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-10-13 12:38:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514794544] [2024-10-13 12:38:20,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:20,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:38:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:20,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:38:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:38:20,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:20,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:20,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:20,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:20,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:20,441 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-10-13 12:38:20,441 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-13 12:38:20,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 349 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-10-13 12:38:20,444 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-10-13 12:38:20,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-10-13 12:38:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:38:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:38:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-10-13 12:38:20,448 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 12:38:20,448 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-10-13 12:38:20,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-10-13 12:38:20,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:20,450 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-10-13 12:38:20,450 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2024-10-13 12:38:20,451 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-10-13 12:38:20,451 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-10-13 12:38:20,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:20,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:20,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:20,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:38:20,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:20,653 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:20,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1014487161, now seen corresponding path program 1 times [2024-10-13 12:38:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951395438] [2024-10-13 12:38:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:20,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:20,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:20,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951395438] [2024-10-13 12:38:20,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951395438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836035855] [2024-10-13 12:38:20,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:20,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:20,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:20,869 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) [2024-10-13 12:38:20,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:38:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:20,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:20,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:21,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836035855] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:21,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:21,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-13 12:38:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946712265] [2024-10-13 12:38:21,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:21,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:21,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:21,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:21,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:21,213 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:21,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:21,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:21,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:21,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:21,354 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-10-13 12:38:21,354 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-10-13 12:38:21,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 298 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place. [2024-10-13 12:38:21,368 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-10-13 12:38:21,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-10-13 12:38:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:38:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:38:21,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-10-13 12:38:21,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-10-13 12:38:21,371 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-10-13 12:38:21,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-10-13 12:38:21,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:21,374 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-10-13 12:38:21,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2024-10-13 12:38:21,375 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-10-13 12:38:21,375 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-10-13 12:38:21,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:21,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:21,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:21,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:21,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-13 12:38:21,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:21,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1697698596, now seen corresponding path program 2 times [2024-10-13 12:38:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195287892] [2024-10-13 12:38:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:21,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195287892] [2024-10-13 12:38:21,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195287892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:21,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064617123] [2024-10-13 12:38:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:21,878 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) [2024-10-13 12:38:21,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:38:21,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:21,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:21,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:21,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064617123] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:22,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-13 12:38:22,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415709146] [2024-10-13 12:38:22,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:22,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:22,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:22,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:22,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:22,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:22,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:22,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:22,337 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-10-13 12:38:22,337 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-13 12:38:22,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 581 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place. [2024-10-13 12:38:22,340 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-10-13 12:38:22,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-10-13 12:38:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-10-13 12:38:22,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-10-13 12:38:22,344 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-10-13 12:38:22,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-10-13 12:38:22,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:22,347 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-10-13 12:38:22,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-13 12:38:22,350 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-10-13 12:38:22,350 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-10-13 12:38:22,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:22,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:22,351 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:22,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 12:38:22,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:22,556 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:22,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:22,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1334400628, now seen corresponding path program 3 times [2024-10-13 12:38:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673256906] [2024-10-13 12:38:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:22,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673256906] [2024-10-13 12:38:22,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673256906] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:22,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270311698] [2024-10-13 12:38:22,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:22,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:22,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:22,781 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) [2024-10-13 12:38:22,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:38:22,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:22,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:22,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:22,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270311698] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:23,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:23,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-13 12:38:23,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135017690] [2024-10-13 12:38:23,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:23,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:23,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:23,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:23,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:23,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:23,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:23,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:23,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:23,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:23,219 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-10-13 12:38:23,219 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-10-13 12:38:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place. [2024-10-13 12:38:23,222 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-10-13 12:38:23,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-10-13 12:38:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:38:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:38:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-10-13 12:38:23,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:23,227 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-10-13 12:38:23,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-10-13 12:38:23,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:23,232 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-10-13 12:38:23,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-10-13 12:38:23,237 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-10-13 12:38:23,237 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-10-13 12:38:23,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:23,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:23,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:23,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:23,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:23,438 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:23,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1328110415, now seen corresponding path program 2 times [2024-10-13 12:38:23,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:23,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100022197] [2024-10-13 12:38:23,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:23,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:23,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100022197] [2024-10-13 12:38:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100022197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135930576] [2024-10-13 12:38:23,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:23,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:23,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:23,653 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) [2024-10-13 12:38:23,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:38:23,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:23,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:23,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 12:38:23,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135930576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:24,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:24,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 12 [2024-10-13 12:38:24,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355946859] [2024-10-13 12:38:24,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:24,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:24,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:24,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 232 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-10-13 12:38:24,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:24,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:24,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:24,161 INFO L124 PetriNetUnfolderBase]: 148/270 cut-off events. [2024-10-13 12:38:24,161 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-10-13 12:38:24,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 270 events. 148/270 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 960 event pairs, 24 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 910. Up to 211 conditions per place. [2024-10-13 12:38:24,166 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-10-13 12:38:24,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 511 flow [2024-10-13 12:38:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-10-13 12:38:24,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-13 12:38:24,168 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 9 states and 87 transitions. [2024-10-13 12:38:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 511 flow [2024-10-13 12:38:24,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 461 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:24,178 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 310 flow [2024-10-13 12:38:24,178 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=310, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-10-13 12:38:24,179 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-10-13 12:38:24,179 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 310 flow [2024-10-13 12:38:24,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-10-13 12:38:24,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:24,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:24,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:24,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:24,380 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:24,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash 599699803, now seen corresponding path program 3 times [2024-10-13 12:38:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118779262] [2024-10-13 12:38:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118779262] [2024-10-13 12:38:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118779262] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997354405] [2024-10-13 12:38:24,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:24,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:24,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:24,597 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) [2024-10-13 12:38:24,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:38:24,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:24,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:24,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 12:38:24,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997354405] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:24,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:24,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2024-10-13 12:38:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447612696] [2024-10-13 12:38:24,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:24,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:38:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:38:24,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:38:24,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:24,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 310 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:24,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:24,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:24,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:25,219 INFO L124 PetriNetUnfolderBase]: 248/454 cut-off events. [2024-10-13 12:38:25,220 INFO L125 PetriNetUnfolderBase]: For 768/768 co-relation queries the response was YES. [2024-10-13 12:38:25,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 454 events. 248/454 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1914 event pairs, 33 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1581. Up to 193 conditions per place. [2024-10-13 12:38:25,224 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 62 selfloop transitions, 46 changer transitions 11/120 dead transitions. [2024-10-13 12:38:25,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 120 transitions, 917 flow [2024-10-13 12:38:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 12:38:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 12:38:25,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 140 transitions. [2024-10-13 12:38:25,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:38:25,226 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 310 flow. Second operand 14 states and 140 transitions. [2024-10-13 12:38:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 120 transitions, 917 flow [2024-10-13 12:38:25,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 120 transitions, 851 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:25,233 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 640 flow [2024-10-13 12:38:25,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=640, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-10-13 12:38:25,234 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 51 predicate places. [2024-10-13 12:38:25,234 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 640 flow [2024-10-13 12:38:25,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:25,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:25,235 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:25,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:25,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:25,436 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:25,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 150856035, now seen corresponding path program 1 times [2024-10-13 12:38:25,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:25,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053304015] [2024-10-13 12:38:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053304015] [2024-10-13 12:38:25,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053304015] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:25,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270217582] [2024-10-13 12:38:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:25,817 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) [2024-10-13 12:38:25,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:38:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:25,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270217582] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:26,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-13 12:38:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13228291] [2024-10-13 12:38:26,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:38:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:38:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:38:26,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:26,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 640 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:26,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:26,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:27,632 INFO L124 PetriNetUnfolderBase]: 342/643 cut-off events. [2024-10-13 12:38:27,632 INFO L125 PetriNetUnfolderBase]: For 2547/2547 co-relation queries the response was YES. [2024-10-13 12:38:27,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 643 events. 342/643 cut-off events. For 2547/2547 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3135 event pairs, 31 based on Foata normal form. 3/646 useless extension candidates. Maximal degree in co-relation 2773. Up to 313 conditions per place. [2024-10-13 12:38:27,637 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 93 selfloop transitions, 64 changer transitions 30/188 dead transitions. [2024-10-13 12:38:27,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 188 transitions, 1654 flow [2024-10-13 12:38:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:38:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:38:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-10-13 12:38:27,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-10-13 12:38:27,639 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 640 flow. Second operand 24 states and 223 transitions. [2024-10-13 12:38:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 188 transitions, 1654 flow [2024-10-13 12:38:27,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 188 transitions, 1516 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:27,650 INFO L231 Difference]: Finished difference. Result has 102 places, 113 transitions, 1019 flow [2024-10-13 12:38:27,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1019, PETRI_PLACES=102, PETRI_TRANSITIONS=113} [2024-10-13 12:38:27,651 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 80 predicate places. [2024-10-13 12:38:27,651 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 113 transitions, 1019 flow [2024-10-13 12:38:27,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:27,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:27,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:27,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:27,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:27,856 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:27,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1450757137, now seen corresponding path program 2 times [2024-10-13 12:38:27,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725821043] [2024-10-13 12:38:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725821043] [2024-10-13 12:38:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725821043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046462460] [2024-10-13 12:38:28,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:28,288 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) [2024-10-13 12:38:28,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:38:28,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:28,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:28,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:28,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046462460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:29,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:29,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-13 12:38:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947342745] [2024-10-13 12:38:29,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:29,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:38:29,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:38:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:38:29,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:29,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 113 transitions, 1019 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:29,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:29,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:29,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:30,317 INFO L124 PetriNetUnfolderBase]: 372/751 cut-off events. [2024-10-13 12:38:30,317 INFO L125 PetriNetUnfolderBase]: For 6118/6118 co-relation queries the response was YES. [2024-10-13 12:38:30,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 751 events. 372/751 cut-off events. For 6118/6118 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4095 event pairs, 30 based on Foata normal form. 4/751 useless extension candidates. Maximal degree in co-relation 3851. Up to 323 conditions per place. [2024-10-13 12:38:30,325 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 105 selfloop transitions, 94 changer transitions 18/218 dead transitions. [2024-10-13 12:38:30,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 218 transitions, 2311 flow [2024-10-13 12:38:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-13 12:38:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-13 12:38:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 270 transitions. [2024-10-13 12:38:30,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-13 12:38:30,329 INFO L175 Difference]: Start difference. First operand has 102 places, 113 transitions, 1019 flow. Second operand 30 states and 270 transitions. [2024-10-13 12:38:30,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 218 transitions, 2311 flow [2024-10-13 12:38:30,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 218 transitions, 2072 flow, removed 98 selfloop flow, removed 11 redundant places. [2024-10-13 12:38:30,354 INFO L231 Difference]: Finished difference. Result has 132 places, 144 transitions, 1578 flow [2024-10-13 12:38:30,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1578, PETRI_PLACES=132, PETRI_TRANSITIONS=144} [2024-10-13 12:38:30,355 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 110 predicate places. [2024-10-13 12:38:30,357 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 144 transitions, 1578 flow [2024-10-13 12:38:30,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:30,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:30,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:30,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:30,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 12:38:30,559 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:30,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:30,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1533874027, now seen corresponding path program 3 times [2024-10-13 12:38:30,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:30,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128581011] [2024-10-13 12:38:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:30,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:31,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128581011] [2024-10-13 12:38:31,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128581011] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539010579] [2024-10-13 12:38:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:31,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:31,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:31,014 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) [2024-10-13 12:38:31,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 12:38:31,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:31,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:31,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:31,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:31,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539010579] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:31,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:31,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-13 12:38:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271730746] [2024-10-13 12:38:31,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:31,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:38:31,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:38:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:38:31,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:31,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 1578 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:31,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:31,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:31,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:32,724 INFO L124 PetriNetUnfolderBase]: 359/702 cut-off events. [2024-10-13 12:38:32,725 INFO L125 PetriNetUnfolderBase]: For 8285/8285 co-relation queries the response was YES. [2024-10-13 12:38:32,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4214 conditions, 702 events. 359/702 cut-off events. For 8285/8285 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3634 event pairs, 33 based on Foata normal form. 4/704 useless extension candidates. Maximal degree in co-relation 4062. Up to 323 conditions per place. [2024-10-13 12:38:32,733 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 93 selfloop transitions, 93 changer transitions 14/201 dead transitions. [2024-10-13 12:38:32,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 201 transitions, 2292 flow [2024-10-13 12:38:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 12:38:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 12:38:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 226 transitions. [2024-10-13 12:38:32,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.452 [2024-10-13 12:38:32,736 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 1578 flow. Second operand 25 states and 226 transitions. [2024-10-13 12:38:32,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 201 transitions, 2292 flow [2024-10-13 12:38:32,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 201 transitions, 1950 flow, removed 144 selfloop flow, removed 14 redundant places. [2024-10-13 12:38:32,787 INFO L231 Difference]: Finished difference. Result has 142 places, 147 transitions, 1576 flow [2024-10-13 12:38:32,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1576, PETRI_PLACES=142, PETRI_TRANSITIONS=147} [2024-10-13 12:38:32,788 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 120 predicate places. [2024-10-13 12:38:32,788 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 147 transitions, 1576 flow [2024-10-13 12:38:32,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:32,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:32,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:32,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:32,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-13 12:38:32,989 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:32,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1930971081, now seen corresponding path program 4 times [2024-10-13 12:38:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176032618] [2024-10-13 12:38:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176032618] [2024-10-13 12:38:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176032618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:33,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247512847] [2024-10-13 12:38:33,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:33,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:33,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:33,358 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) [2024-10-13 12:38:33,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 12:38:33,417 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:33,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:33,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:33,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247512847] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:34,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931109238] [2024-10-13 12:38:34,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:34,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:34,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:34,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 147 transitions, 1576 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:34,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:34,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:34,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:35,231 INFO L124 PetriNetUnfolderBase]: 420/806 cut-off events. [2024-10-13 12:38:35,231 INFO L125 PetriNetUnfolderBase]: For 10659/10659 co-relation queries the response was YES. [2024-10-13 12:38:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 806 events. 420/806 cut-off events. For 10659/10659 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4233 event pairs, 65 based on Foata normal form. 3/807 useless extension candidates. Maximal degree in co-relation 4824. Up to 658 conditions per place. [2024-10-13 12:38:35,241 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 158 selfloop transitions, 46 changer transitions 15/220 dead transitions. [2024-10-13 12:38:35,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 220 transitions, 2693 flow [2024-10-13 12:38:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 12:38:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 12:38:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-10-13 12:38:35,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-13 12:38:35,243 INFO L175 Difference]: Start difference. First operand has 142 places, 147 transitions, 1576 flow. Second operand 18 states and 164 transitions. [2024-10-13 12:38:35,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 220 transitions, 2693 flow [2024-10-13 12:38:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 220 transitions, 2251 flow, removed 134 selfloop flow, removed 26 redundant places. [2024-10-13 12:38:35,282 INFO L231 Difference]: Finished difference. Result has 137 places, 178 transitions, 1814 flow [2024-10-13 12:38:35,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1814, PETRI_PLACES=137, PETRI_TRANSITIONS=178} [2024-10-13 12:38:35,283 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 115 predicate places. [2024-10-13 12:38:35,283 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 178 transitions, 1814 flow [2024-10-13 12:38:35,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:35,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:35,283 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:35,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:35,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-13 12:38:35,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:35,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:35,488 INFO L85 PathProgramCache]: Analyzing trace with hash -498701196, now seen corresponding path program 4 times [2024-10-13 12:38:35,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678765219] [2024-10-13 12:38:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678765219] [2024-10-13 12:38:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678765219] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256243922] [2024-10-13 12:38:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:35,693 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) [2024-10-13 12:38:35,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 12:38:35,746 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:35,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:35,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:38:35,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:35,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256243922] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:36,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:36,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-10-13 12:38:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372895188] [2024-10-13 12:38:36,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:36,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:38:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:38:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:38:36,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:36,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 178 transitions, 1814 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:36,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:36,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:36,449 INFO L124 PetriNetUnfolderBase]: 412/794 cut-off events. [2024-10-13 12:38:36,449 INFO L125 PetriNetUnfolderBase]: For 4118/4118 co-relation queries the response was YES. [2024-10-13 12:38:36,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 794 events. 412/794 cut-off events. For 4118/4118 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4179 event pairs, 64 based on Foata normal form. 4/796 useless extension candidates. Maximal degree in co-relation 4307. Up to 660 conditions per place. [2024-10-13 12:38:36,457 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 157 selfloop transitions, 30 changer transitions 25/213 dead transitions. [2024-10-13 12:38:36,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 213 transitions, 2423 flow [2024-10-13 12:38:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:38:36,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:38:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-10-13 12:38:36,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-10-13 12:38:36,458 INFO L175 Difference]: Start difference. First operand has 137 places, 178 transitions, 1814 flow. Second operand 13 states and 122 transitions. [2024-10-13 12:38:36,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 213 transitions, 2423 flow [2024-10-13 12:38:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 213 transitions, 2319 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-10-13 12:38:36,480 INFO L231 Difference]: Finished difference. Result has 147 places, 174 transitions, 1737 flow [2024-10-13 12:38:36,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1737, PETRI_PLACES=147, PETRI_TRANSITIONS=174} [2024-10-13 12:38:36,481 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 125 predicate places. [2024-10-13 12:38:36,481 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 174 transitions, 1737 flow [2024-10-13 12:38:36,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:36,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:36,482 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:36,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 12:38:36,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 12:38:36,682 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:36,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1211114799, now seen corresponding path program 5 times [2024-10-13 12:38:36,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:36,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715924637] [2024-10-13 12:38:36,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:37,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715924637] [2024-10-13 12:38:37,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715924637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:37,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389622315] [2024-10-13 12:38:37,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:37,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:37,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:37,068 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) [2024-10-13 12:38:37,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 12:38:37,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:37,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:37,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:37,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389622315] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:38,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:38,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770334924] [2024-10-13 12:38:38,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:38,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:38,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:38,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 174 transitions, 1737 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:38,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:38,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:38,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:38,638 INFO L124 PetriNetUnfolderBase]: 452/864 cut-off events. [2024-10-13 12:38:38,638 INFO L125 PetriNetUnfolderBase]: For 5236/5236 co-relation queries the response was YES. [2024-10-13 12:38:38,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 864 events. 452/864 cut-off events. For 5236/5236 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4616 event pairs, 60 based on Foata normal form. 3/865 useless extension candidates. Maximal degree in co-relation 4803. Up to 693 conditions per place. [2024-10-13 12:38:38,651 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 167 selfloop transitions, 55 changer transitions 9/232 dead transitions. [2024-10-13 12:38:38,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 232 transitions, 2693 flow [2024-10-13 12:38:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-13 12:38:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-13 12:38:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 166 transitions. [2024-10-13 12:38:38,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-10-13 12:38:38,652 INFO L175 Difference]: Start difference. First operand has 147 places, 174 transitions, 1737 flow. Second operand 20 states and 166 transitions. [2024-10-13 12:38:38,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 232 transitions, 2693 flow [2024-10-13 12:38:38,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 232 transitions, 2588 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-10-13 12:38:38,683 INFO L231 Difference]: Finished difference. Result has 157 places, 198 transitions, 2153 flow [2024-10-13 12:38:38,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2153, PETRI_PLACES=157, PETRI_TRANSITIONS=198} [2024-10-13 12:38:38,684 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 135 predicate places. [2024-10-13 12:38:38,684 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 198 transitions, 2153 flow [2024-10-13 12:38:38,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:38,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:38,685 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:38,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 12:38:38,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 12:38:38,886 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:38,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2134621864, now seen corresponding path program 4 times [2024-10-13 12:38:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:38,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580295128] [2024-10-13 12:38:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580295128] [2024-10-13 12:38:39,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580295128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:39,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933927396] [2024-10-13 12:38:39,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:39,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:39,054 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) [2024-10-13 12:38:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 12:38:39,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:39,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:39,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:38:39,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:39,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:39,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:43,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933927396] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:43,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:43,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 17 [2024-10-13 12:38:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706688439] [2024-10-13 12:38:43,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:43,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:43,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:43,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=226, Unknown=1, NotChecked=0, Total=306 [2024-10-13 12:38:43,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:43,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 198 transitions, 2153 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 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) [2024-10-13 12:38:43,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:43,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:43,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:44,006 INFO L124 PetriNetUnfolderBase]: 448/849 cut-off events. [2024-10-13 12:38:44,007 INFO L125 PetriNetUnfolderBase]: For 6080/6080 co-relation queries the response was YES. [2024-10-13 12:38:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 849 events. 448/849 cut-off events. For 6080/6080 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4454 event pairs, 60 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 5027. Up to 741 conditions per place. [2024-10-13 12:38:44,018 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 179 selfloop transitions, 38 changer transitions 6/224 dead transitions. [2024-10-13 12:38:44,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 224 transitions, 2702 flow [2024-10-13 12:38:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:38:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:38:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 132 transitions. [2024-10-13 12:38:44,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-10-13 12:38:44,020 INFO L175 Difference]: Start difference. First operand has 157 places, 198 transitions, 2153 flow. Second operand 15 states and 132 transitions. [2024-10-13 12:38:44,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 224 transitions, 2702 flow [2024-10-13 12:38:44,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 224 transitions, 2529 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-10-13 12:38:44,053 INFO L231 Difference]: Finished difference. Result has 161 places, 198 transitions, 2080 flow [2024-10-13 12:38:44,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2080, PETRI_PLACES=161, PETRI_TRANSITIONS=198} [2024-10-13 12:38:44,054 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-10-13 12:38:44,054 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 198 transitions, 2080 flow [2024-10-13 12:38:44,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 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) [2024-10-13 12:38:44,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:44,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:44,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:44,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 12:38:44,260 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:44,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 434762513, now seen corresponding path program 6 times [2024-10-13 12:38:44,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:44,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802497419] [2024-10-13 12:38:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:44,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:44,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802497419] [2024-10-13 12:38:44,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802497419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:44,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123679280] [2024-10-13 12:38:44,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:44,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:44,584 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) [2024-10-13 12:38:44,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 12:38:44,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:44,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:44,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:44,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:44,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:45,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123679280] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:45,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507391884] [2024-10-13 12:38:45,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:45,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:45,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:45,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 198 transitions, 2080 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:45,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:45,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:45,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:46,060 INFO L124 PetriNetUnfolderBase]: 453/866 cut-off events. [2024-10-13 12:38:46,060 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-10-13 12:38:46,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 866 events. 453/866 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4627 event pairs, 59 based on Foata normal form. 3/867 useless extension candidates. Maximal degree in co-relation 5035. Up to 765 conditions per place. [2024-10-13 12:38:46,070 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 180 selfloop transitions, 43 changer transitions 7/231 dead transitions. [2024-10-13 12:38:46,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 231 transitions, 2723 flow [2024-10-13 12:38:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 12:38:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 12:38:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 150 transitions. [2024-10-13 12:38:46,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-10-13 12:38:46,073 INFO L175 Difference]: Start difference. First operand has 161 places, 198 transitions, 2080 flow. Second operand 18 states and 150 transitions. [2024-10-13 12:38:46,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 231 transitions, 2723 flow [2024-10-13 12:38:46,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 231 transitions, 2612 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-10-13 12:38:46,107 INFO L231 Difference]: Finished difference. Result has 170 places, 204 transitions, 2181 flow [2024-10-13 12:38:46,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2181, PETRI_PLACES=170, PETRI_TRANSITIONS=204} [2024-10-13 12:38:46,109 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 148 predicate places. [2024-10-13 12:38:46,109 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 204 transitions, 2181 flow [2024-10-13 12:38:46,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:46,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:46,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:46,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 12:38:46,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,314 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:46,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:46,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1294231689, now seen corresponding path program 7 times [2024-10-13 12:38:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:46,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9840197] [2024-10-13 12:38:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9840197] [2024-10-13 12:38:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9840197] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502715280] [2024-10-13 12:38:46,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:46,647 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) [2024-10-13 12:38:46,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 12:38:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:46,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:46,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:47,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502715280] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:47,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:47,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:47,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369370549] [2024-10-13 12:38:47,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:47,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:47,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:47,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:47,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 204 transitions, 2181 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:47,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:47,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:47,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:48,593 INFO L124 PetriNetUnfolderBase]: 451/860 cut-off events. [2024-10-13 12:38:48,593 INFO L125 PetriNetUnfolderBase]: For 6131/6131 co-relation queries the response was YES. [2024-10-13 12:38:48,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 860 events. 451/860 cut-off events. For 6131/6131 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4564 event pairs, 63 based on Foata normal form. 3/861 useless extension candidates. Maximal degree in co-relation 5106. Up to 700 conditions per place. [2024-10-13 12:38:48,601 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 174 selfloop transitions, 61 changer transitions 8/244 dead transitions. [2024-10-13 12:38:48,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 244 transitions, 2895 flow [2024-10-13 12:38:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:38:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:38:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 190 transitions. [2024-10-13 12:38:48,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2024-10-13 12:38:48,603 INFO L175 Difference]: Start difference. First operand has 170 places, 204 transitions, 2181 flow. Second operand 23 states and 190 transitions. [2024-10-13 12:38:48,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 244 transitions, 2895 flow [2024-10-13 12:38:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 244 transitions, 2801 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-10-13 12:38:48,639 INFO L231 Difference]: Finished difference. Result has 185 places, 208 transitions, 2321 flow [2024-10-13 12:38:48,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2321, PETRI_PLACES=185, PETRI_TRANSITIONS=208} [2024-10-13 12:38:48,640 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 163 predicate places. [2024-10-13 12:38:48,641 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 208 transitions, 2321 flow [2024-10-13 12:38:48,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:48,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:48,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:48,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:48,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 12:38:48,846 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:48,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1354805163, now seen corresponding path program 8 times [2024-10-13 12:38:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969258178] [2024-10-13 12:38:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:49,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969258178] [2024-10-13 12:38:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969258178] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702944008] [2024-10-13 12:38:49,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:49,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:49,213 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) [2024-10-13 12:38:49,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 12:38:49,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:49,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:49,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:49,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:49,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702944008] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:50,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:50,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111710690] [2024-10-13 12:38:50,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:50,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:50,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:50,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 208 transitions, 2321 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:50,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:50,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:50,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:51,074 INFO L124 PetriNetUnfolderBase]: 500/958 cut-off events. [2024-10-13 12:38:51,075 INFO L125 PetriNetUnfolderBase]: For 9272/9272 co-relation queries the response was YES. [2024-10-13 12:38:51,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6183 conditions, 958 events. 500/958 cut-off events. For 9272/9272 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5227 event pairs, 57 based on Foata normal form. 3/959 useless extension candidates. Maximal degree in co-relation 6117. Up to 751 conditions per place. [2024-10-13 12:38:51,084 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 191 selfloop transitions, 66 changer transitions 8/266 dead transitions. [2024-10-13 12:38:51,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 266 transitions, 3496 flow [2024-10-13 12:38:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 12:38:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 12:38:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 167 transitions. [2024-10-13 12:38:51,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-10-13 12:38:51,086 INFO L175 Difference]: Start difference. First operand has 185 places, 208 transitions, 2321 flow. Second operand 19 states and 167 transitions. [2024-10-13 12:38:51,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 266 transitions, 3496 flow [2024-10-13 12:38:51,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 266 transitions, 3257 flow, removed 73 selfloop flow, removed 23 redundant places. [2024-10-13 12:38:51,122 INFO L231 Difference]: Finished difference. Result has 187 places, 229 transitions, 2703 flow [2024-10-13 12:38:51,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2703, PETRI_PLACES=187, PETRI_TRANSITIONS=229} [2024-10-13 12:38:51,123 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 165 predicate places. [2024-10-13 12:38:51,123 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 229 transitions, 2703 flow [2024-10-13 12:38:51,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:51,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:51,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:51,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:51,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 12:38:51,324 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:51,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1271688273, now seen corresponding path program 9 times [2024-10-13 12:38:51,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:51,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412907943] [2024-10-13 12:38:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:51,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412907943] [2024-10-13 12:38:51,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412907943] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458177270] [2024-10-13 12:38:51,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:51,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:51,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:51,707 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) [2024-10-13 12:38:51,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 12:38:51,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:51,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:51,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:51,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:51,891 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458177270] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:52,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450562840] [2024-10-13 12:38:52,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:52,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:52,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:52,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 229 transitions, 2703 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:52,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:52,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:52,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:53,138 INFO L124 PetriNetUnfolderBase]: 491/931 cut-off events. [2024-10-13 12:38:53,138 INFO L125 PetriNetUnfolderBase]: For 8667/8667 co-relation queries the response was YES. [2024-10-13 12:38:53,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6048 conditions, 931 events. 491/931 cut-off events. For 8667/8667 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5010 event pairs, 57 based on Foata normal form. 3/932 useless extension candidates. Maximal degree in co-relation 5927. Up to 751 conditions per place. [2024-10-13 12:38:53,149 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 183 selfloop transitions, 65 changer transitions 8/257 dead transitions. [2024-10-13 12:38:53,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 257 transitions, 3360 flow [2024-10-13 12:38:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-10-13 12:38:53,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-10-13 12:38:53,150 INFO L175 Difference]: Start difference. First operand has 187 places, 229 transitions, 2703 flow. Second operand 17 states and 145 transitions. [2024-10-13 12:38:53,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 257 transitions, 3360 flow [2024-10-13 12:38:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 257 transitions, 3030 flow, removed 144 selfloop flow, removed 9 redundant places. [2024-10-13 12:38:53,195 INFO L231 Difference]: Finished difference. Result has 195 places, 230 transitions, 2608 flow [2024-10-13 12:38:53,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2608, PETRI_PLACES=195, PETRI_TRANSITIONS=230} [2024-10-13 12:38:53,195 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 173 predicate places. [2024-10-13 12:38:53,196 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 230 transitions, 2608 flow [2024-10-13 12:38:53,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:53,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:53,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:53,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 12:38:53,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 12:38:53,397 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:53,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1393115503, now seen corresponding path program 10 times [2024-10-13 12:38:53,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:53,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612767050] [2024-10-13 12:38:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:53,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:53,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612767050] [2024-10-13 12:38:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612767050] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528031446] [2024-10-13 12:38:53,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:53,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:53,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:53,716 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) [2024-10-13 12:38:53,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 12:38:53,775 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:53,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:53,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:53,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:53,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528031446] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:54,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:54,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287020676] [2024-10-13 12:38:54,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:54,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:54,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:54,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 230 transitions, 2608 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:54,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:54,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:54,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:55,271 INFO L124 PetriNetUnfolderBase]: 500/949 cut-off events. [2024-10-13 12:38:55,271 INFO L125 PetriNetUnfolderBase]: For 9536/9536 co-relation queries the response was YES. [2024-10-13 12:38:55,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 949 events. 500/949 cut-off events. For 9536/9536 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5124 event pairs, 63 based on Foata normal form. 3/950 useless extension candidates. Maximal degree in co-relation 6036. Up to 834 conditions per place. [2024-10-13 12:38:55,290 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 209 selfloop transitions, 42 changer transitions 8/260 dead transitions. [2024-10-13 12:38:55,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 260 transitions, 3365 flow [2024-10-13 12:38:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:38:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:38:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 129 transitions. [2024-10-13 12:38:55,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-10-13 12:38:55,292 INFO L175 Difference]: Start difference. First operand has 195 places, 230 transitions, 2608 flow. Second operand 15 states and 129 transitions. [2024-10-13 12:38:55,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 260 transitions, 3365 flow [2024-10-13 12:38:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 260 transitions, 3167 flow, removed 59 selfloop flow, removed 12 redundant places. [2024-10-13 12:38:55,344 INFO L231 Difference]: Finished difference. Result has 198 places, 233 transitions, 2631 flow [2024-10-13 12:38:55,344 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2631, PETRI_PLACES=198, PETRI_TRANSITIONS=233} [2024-10-13 12:38:55,345 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 176 predicate places. [2024-10-13 12:38:55,345 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 233 transitions, 2631 flow [2024-10-13 12:38:55,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:55,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:55,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:55,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-13 12:38:55,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:55,546 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:55,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:55,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1748970377, now seen corresponding path program 11 times [2024-10-13 12:38:55,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:55,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337203032] [2024-10-13 12:38:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:55,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337203032] [2024-10-13 12:38:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337203032] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339344238] [2024-10-13 12:38:55,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:55,908 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) [2024-10-13 12:38:55,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 12:38:55,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:55,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:55,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:55,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:56,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:57,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:57,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339344238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:57,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:57,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:57,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317399833] [2024-10-13 12:38:57,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:57,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:57,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:57,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 233 transitions, 2631 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:57,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:57,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:57,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:57,537 INFO L124 PetriNetUnfolderBase]: 541/1025 cut-off events. [2024-10-13 12:38:57,538 INFO L125 PetriNetUnfolderBase]: For 11936/11936 co-relation queries the response was YES. [2024-10-13 12:38:57,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 1025 events. 541/1025 cut-off events. For 11936/11936 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5638 event pairs, 61 based on Foata normal form. 3/1026 useless extension candidates. Maximal degree in co-relation 6728. Up to 852 conditions per place. [2024-10-13 12:38:57,547 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 211 selfloop transitions, 57 changer transitions 9/278 dead transitions. [2024-10-13 12:38:57,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 278 transitions, 3750 flow [2024-10-13 12:38:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 12:38:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 12:38:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-10-13 12:38:57,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-10-13 12:38:57,549 INFO L175 Difference]: Start difference. First operand has 198 places, 233 transitions, 2631 flow. Second operand 17 states and 143 transitions. [2024-10-13 12:38:57,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 278 transitions, 3750 flow [2024-10-13 12:38:57,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 278 transitions, 3613 flow, removed 26 selfloop flow, removed 14 redundant places. [2024-10-13 12:38:57,590 INFO L231 Difference]: Finished difference. Result has 206 places, 249 transitions, 3019 flow [2024-10-13 12:38:57,590 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3019, PETRI_PLACES=206, PETRI_TRANSITIONS=249} [2024-10-13 12:38:57,591 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 184 predicate places. [2024-10-13 12:38:57,591 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 249 transitions, 3019 flow [2024-10-13 12:38:57,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:57,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:57,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:57,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:57,792 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:57,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1832087267, now seen corresponding path program 12 times [2024-10-13 12:38:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162255381] [2024-10-13 12:38:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162255381] [2024-10-13 12:38:58,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162255381] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734682152] [2024-10-13 12:38:58,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:58,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:58,158 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:58,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 12:38:58,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:58,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:58,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:38:58,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:58,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734682152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:58,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:58,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:38:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723882842] [2024-10-13 12:38:58,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:58,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:38:58,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:58,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:38:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:38:58,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:38:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 249 transitions, 3019 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:38:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:59,576 INFO L124 PetriNetUnfolderBase]: 538/1016 cut-off events. [2024-10-13 12:38:59,576 INFO L125 PetriNetUnfolderBase]: For 12715/12715 co-relation queries the response was YES. [2024-10-13 12:38:59,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6953 conditions, 1016 events. 538/1016 cut-off events. For 12715/12715 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5564 event pairs, 61 based on Foata normal form. 3/1017 useless extension candidates. Maximal degree in co-relation 6830. Up to 854 conditions per place. [2024-10-13 12:38:59,584 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 214 selfloop transitions, 61 changer transitions 7/283 dead transitions. [2024-10-13 12:38:59,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 283 transitions, 3914 flow [2024-10-13 12:38:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 12:38:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 12:38:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-10-13 12:38:59,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-10-13 12:38:59,586 INFO L175 Difference]: Start difference. First operand has 206 places, 249 transitions, 3019 flow. Second operand 18 states and 154 transitions. [2024-10-13 12:38:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 283 transitions, 3914 flow [2024-10-13 12:38:59,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 283 transitions, 3608 flow, removed 131 selfloop flow, removed 11 redundant places. [2024-10-13 12:38:59,634 INFO L231 Difference]: Finished difference. Result has 213 places, 255 transitions, 3072 flow [2024-10-13 12:38:59,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3072, PETRI_PLACES=213, PETRI_TRANSITIONS=255} [2024-10-13 12:38:59,635 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 191 predicate places. [2024-10-13 12:38:59,635 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 255 transitions, 3072 flow [2024-10-13 12:38:59,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:38:59,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:59,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:59,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:59,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 12:38:59,836 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:38:59,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:59,837 INFO L85 PathProgramCache]: Analyzing trace with hash -733832695, now seen corresponding path program 13 times [2024-10-13 12:38:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520667735] [2024-10-13 12:38:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520667735] [2024-10-13 12:39:00,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520667735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101071674] [2024-10-13 12:39:00,168 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:39:00,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:00,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:00,170 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:00,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 12:39:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:00,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:39:00,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:00,418 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101071674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:01,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:01,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:39:01,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071495447] [2024-10-13 12:39:01,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:01,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:01,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:01,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:01,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 255 transitions, 3072 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:01,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:01,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:02,150 INFO L124 PetriNetUnfolderBase]: 575/1089 cut-off events. [2024-10-13 12:39:02,151 INFO L125 PetriNetUnfolderBase]: For 17064/17064 co-relation queries the response was YES. [2024-10-13 12:39:02,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 1089 events. 575/1089 cut-off events. For 17064/17064 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6097 event pairs, 63 based on Foata normal form. 3/1090 useless extension candidates. Maximal degree in co-relation 7551. Up to 909 conditions per place. [2024-10-13 12:39:02,162 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 233 selfloop transitions, 59 changer transitions 8/301 dead transitions. [2024-10-13 12:39:02,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 301 transitions, 4163 flow [2024-10-13 12:39:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 12:39:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 12:39:02,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 172 transitions. [2024-10-13 12:39:02,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-10-13 12:39:02,164 INFO L175 Difference]: Start difference. First operand has 213 places, 255 transitions, 3072 flow. Second operand 21 states and 172 transitions. [2024-10-13 12:39:02,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 301 transitions, 4163 flow [2024-10-13 12:39:02,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 301 transitions, 3908 flow, removed 90 selfloop flow, removed 15 redundant places. [2024-10-13 12:39:02,238 INFO L231 Difference]: Finished difference. Result has 223 places, 268 transitions, 3334 flow [2024-10-13 12:39:02,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3334, PETRI_PLACES=223, PETRI_TRANSITIONS=268} [2024-10-13 12:39:02,238 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 201 predicate places. [2024-10-13 12:39:02,238 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 268 transitions, 3334 flow [2024-10-13 12:39:02,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:02,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:02,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:02,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:02,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 12:39:02,439 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:02,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:02,440 INFO L85 PathProgramCache]: Analyzing trace with hash -812480935, now seen corresponding path program 14 times [2024-10-13 12:39:02,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:02,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587274697] [2024-10-13 12:39:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:02,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:02,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587274697] [2024-10-13 12:39:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587274697] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248399788] [2024-10-13 12:39:02,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:02,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:02,779 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:02,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 12:39:02,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:02,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:02,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:39:02,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:02,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248399788] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:04,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:04,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:39:04,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345346998] [2024-10-13 12:39:04,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:04,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:04,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:04,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:04,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 268 transitions, 3334 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:04,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:04,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:04,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:04,782 INFO L124 PetriNetUnfolderBase]: 575/1086 cut-off events. [2024-10-13 12:39:04,782 INFO L125 PetriNetUnfolderBase]: For 16194/16194 co-relation queries the response was YES. [2024-10-13 12:39:04,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7672 conditions, 1086 events. 575/1086 cut-off events. For 16194/16194 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6025 event pairs, 64 based on Foata normal form. 3/1087 useless extension candidates. Maximal degree in co-relation 7546. Up to 912 conditions per place. [2024-10-13 12:39:04,792 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 238 selfloop transitions, 61 changer transitions 8/308 dead transitions. [2024-10-13 12:39:04,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 308 transitions, 4254 flow [2024-10-13 12:39:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 12:39:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 12:39:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 186 transitions. [2024-10-13 12:39:04,794 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-10-13 12:39:04,794 INFO L175 Difference]: Start difference. First operand has 223 places, 268 transitions, 3334 flow. Second operand 22 states and 186 transitions. [2024-10-13 12:39:04,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 308 transitions, 4254 flow [2024-10-13 12:39:04,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 308 transitions, 3990 flow, removed 102 selfloop flow, removed 16 redundant places. [2024-10-13 12:39:04,868 INFO L231 Difference]: Finished difference. Result has 229 places, 272 transitions, 3377 flow [2024-10-13 12:39:04,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3377, PETRI_PLACES=229, PETRI_TRANSITIONS=272} [2024-10-13 12:39:04,869 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 207 predicate places. [2024-10-13 12:39:04,869 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 272 transitions, 3377 flow [2024-10-13 12:39:04,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:04,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:04,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:04,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-13 12:39:05,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:05,074 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:05,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:05,074 INFO L85 PathProgramCache]: Analyzing trace with hash -361973239, now seen corresponding path program 15 times [2024-10-13 12:39:05,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936845508] [2024-10-13 12:39:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:05,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:05,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936845508] [2024-10-13 12:39:05,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936845508] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:05,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371030559] [2024-10-13 12:39:05,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:05,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:05,363 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:05,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 12:39:05,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:39:05,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:05,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:39:05,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:05,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:05,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:06,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371030559] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:06,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:06,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:39:06,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411184165] [2024-10-13 12:39:06,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:06,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:06,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:06,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 272 transitions, 3377 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:06,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:06,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:06,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:10,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:39:14,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:39:15,028 INFO L124 PetriNetUnfolderBase]: 605/1161 cut-off events. [2024-10-13 12:39:15,028 INFO L125 PetriNetUnfolderBase]: For 15380/15380 co-relation queries the response was YES. [2024-10-13 12:39:15,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7995 conditions, 1161 events. 605/1161 cut-off events. For 15380/15380 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6668 event pairs, 66 based on Foata normal form. 4/1163 useless extension candidates. Maximal degree in co-relation 7912. Up to 949 conditions per place. [2024-10-13 12:39:15,041 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 254 selfloop transitions, 71 changer transitions 16/342 dead transitions. [2024-10-13 12:39:15,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 342 transitions, 4733 flow [2024-10-13 12:39:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:39:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:39:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 197 transitions. [2024-10-13 12:39:15,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282608695652174 [2024-10-13 12:39:15,044 INFO L175 Difference]: Start difference. First operand has 229 places, 272 transitions, 3377 flow. Second operand 23 states and 197 transitions. [2024-10-13 12:39:15,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 342 transitions, 4733 flow [2024-10-13 12:39:15,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 342 transitions, 4475 flow, removed 91 selfloop flow, removed 19 redundant places. [2024-10-13 12:39:15,130 INFO L231 Difference]: Finished difference. Result has 242 places, 293 transitions, 3677 flow [2024-10-13 12:39:15,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3677, PETRI_PLACES=242, PETRI_TRANSITIONS=293} [2024-10-13 12:39:15,131 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 220 predicate places. [2024-10-13 12:39:15,132 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 293 transitions, 3677 flow [2024-10-13 12:39:15,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:15,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:15,132 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:15,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-13 12:39:15,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:15,333 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:15,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:15,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1990266970, now seen corresponding path program 5 times [2024-10-13 12:39:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:15,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642897389] [2024-10-13 12:39:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:15,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:15,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642897389] [2024-10-13 12:39:15,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642897389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:15,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160266051] [2024-10-13 12:39:15,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:39:15,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:15,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:15,503 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:15,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 12:39:15,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:15,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:15,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 12:39:15,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:15,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160266051] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:15,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 18 [2024-10-13 12:39:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466777930] [2024-10-13 12:39:15,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:15,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:39:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:39:15,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:39:15,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:15,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 293 transitions, 3677 flow. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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) [2024-10-13 12:39:15,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:15,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:15,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:16,974 INFO L124 PetriNetUnfolderBase]: 740/1416 cut-off events. [2024-10-13 12:39:16,974 INFO L125 PetriNetUnfolderBase]: For 30578/30578 co-relation queries the response was YES. [2024-10-13 12:39:16,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10687 conditions, 1416 events. 740/1416 cut-off events. For 30578/30578 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8521 event pairs, 63 based on Foata normal form. 5/1421 useless extension candidates. Maximal degree in co-relation 10505. Up to 593 conditions per place. [2024-10-13 12:39:16,989 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 230 selfloop transitions, 180 changer transitions 13/424 dead transitions. [2024-10-13 12:39:16,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 424 transitions, 6219 flow [2024-10-13 12:39:16,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 12:39:16,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 12:39:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 246 transitions. [2024-10-13 12:39:16,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-13 12:39:16,991 INFO L175 Difference]: Start difference. First operand has 242 places, 293 transitions, 3677 flow. Second operand 27 states and 246 transitions. [2024-10-13 12:39:16,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 424 transitions, 6219 flow [2024-10-13 12:39:17,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 424 transitions, 5930 flow, removed 121 selfloop flow, removed 11 redundant places. [2024-10-13 12:39:17,144 INFO L231 Difference]: Finished difference. Result has 266 places, 339 transitions, 4895 flow [2024-10-13 12:39:17,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4895, PETRI_PLACES=266, PETRI_TRANSITIONS=339} [2024-10-13 12:39:17,145 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 244 predicate places. [2024-10-13 12:39:17,146 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 339 transitions, 4895 flow [2024-10-13 12:39:17,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 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) [2024-10-13 12:39:17,146 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:17,146 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:17,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:17,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 12:39:17,348 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:17,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:17,348 INFO L85 PathProgramCache]: Analyzing trace with hash 972618091, now seen corresponding path program 16 times [2024-10-13 12:39:17,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:17,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659591461] [2024-10-13 12:39:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659591461] [2024-10-13 12:39:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659591461] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939763755] [2024-10-13 12:39:17,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:39:17,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:17,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:17,588 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:17,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 12:39:17,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:39:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:17,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:39:17,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:17,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939763755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:18,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-10-13 12:39:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459716363] [2024-10-13 12:39:18,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:18,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 12:39:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 12:39:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-13 12:39:18,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:18,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 339 transitions, 4895 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:18,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:18,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:18,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:18,977 INFO L124 PetriNetUnfolderBase]: 742/1424 cut-off events. [2024-10-13 12:39:18,978 INFO L125 PetriNetUnfolderBase]: For 34373/34373 co-relation queries the response was YES. [2024-10-13 12:39:18,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11481 conditions, 1424 events. 742/1424 cut-off events. For 34373/34373 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8560 event pairs, 104 based on Foata normal form. 3/1427 useless extension candidates. Maximal degree in co-relation 11283. Up to 1322 conditions per place. [2024-10-13 12:39:18,994 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 319 selfloop transitions, 39 changer transitions 7/366 dead transitions. [2024-10-13 12:39:18,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 366 transitions, 5805 flow [2024-10-13 12:39:18,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 12:39:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 12:39:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2024-10-13 12:39:18,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-10-13 12:39:18,995 INFO L175 Difference]: Start difference. First operand has 266 places, 339 transitions, 4895 flow. Second operand 16 states and 132 transitions. [2024-10-13 12:39:18,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 366 transitions, 5805 flow [2024-10-13 12:39:19,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 366 transitions, 5397 flow, removed 169 selfloop flow, removed 14 redundant places. [2024-10-13 12:39:19,136 INFO L231 Difference]: Finished difference. Result has 269 places, 342 transitions, 4648 flow [2024-10-13 12:39:19,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4648, PETRI_PLACES=269, PETRI_TRANSITIONS=342} [2024-10-13 12:39:19,137 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 247 predicate places. [2024-10-13 12:39:19,137 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 342 transitions, 4648 flow [2024-10-13 12:39:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:19,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:19,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:19,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:19,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 12:39:19,338 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:19,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:19,338 INFO L85 PathProgramCache]: Analyzing trace with hash 515929963, now seen corresponding path program 17 times [2024-10-13 12:39:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704057423] [2024-10-13 12:39:19,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:19,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704057423] [2024-10-13 12:39:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704057423] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:19,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059862611] [2024-10-13 12:39:19,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:39:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:19,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:19,645 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:19,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 12:39:19,687 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:19,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:19,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-13 12:39:19,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:19,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059862611] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:20,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:20,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-10-13 12:39:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664020684] [2024-10-13 12:39:20,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:20,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 12:39:20,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:20,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 12:39:20,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-10-13 12:39:20,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 342 transitions, 4648 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:20,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:21,303 INFO L124 PetriNetUnfolderBase]: 782/1517 cut-off events. [2024-10-13 12:39:21,304 INFO L125 PetriNetUnfolderBase]: For 37429/37429 co-relation queries the response was YES. [2024-10-13 12:39:21,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12114 conditions, 1517 events. 782/1517 cut-off events. For 37429/37429 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9353 event pairs, 95 based on Foata normal form. 4/1521 useless extension candidates. Maximal degree in co-relation 12012. Up to 1217 conditions per place. [2024-10-13 12:39:21,324 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 304 selfloop transitions, 103 changer transitions 11/419 dead transitions. [2024-10-13 12:39:21,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 419 transitions, 6602 flow [2024-10-13 12:39:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 12:39:21,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 12:39:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 239 transitions. [2024-10-13 12:39:21,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4425925925925926 [2024-10-13 12:39:21,325 INFO L175 Difference]: Start difference. First operand has 269 places, 342 transitions, 4648 flow. Second operand 27 states and 239 transitions. [2024-10-13 12:39:21,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 419 transitions, 6602 flow [2024-10-13 12:39:21,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 419 transitions, 6456 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-10-13 12:39:21,513 INFO L231 Difference]: Finished difference. Result has 289 places, 363 transitions, 5476 flow [2024-10-13 12:39:21,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5476, PETRI_PLACES=289, PETRI_TRANSITIONS=363} [2024-10-13 12:39:21,514 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 267 predicate places. [2024-10-13 12:39:21,514 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 363 transitions, 5476 flow [2024-10-13 12:39:21,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:21,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:21,514 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:39:21,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:21,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 12:39:21,715 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-10-13 12:39:21,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:21,715 INFO L85 PathProgramCache]: Analyzing trace with hash 47257395, now seen corresponding path program 18 times [2024-10-13 12:39:21,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:21,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812279096] [2024-10-13 12:39:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:21,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:22,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812279096] [2024-10-13 12:39:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812279096] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663793275] [2024-10-13 12:39:22,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:39:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:22,225 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:22,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-13 12:39:22,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:39:22,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:22,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-13 12:39:22,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:22,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:24,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663793275] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:24,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:24,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-10-13 12:39:24,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11637699] [2024-10-13 12:39:24,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:24,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-13 12:39:24,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-13 12:39:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-10-13 12:39:24,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-10-13 12:39:24,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 363 transitions, 5476 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:39:24,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:24,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-10-13 12:39:24,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:28,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:39:34,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-10-13 12:39:38,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []