./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/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-?-c7c6ca5-m [2024-11-09 10:48:09,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:48:09,211 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:48:09,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:48:09,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:48:09,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:48:09,243 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:48:09,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:48:09,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:48:09,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:48:09,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:48:09,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:48:09,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:48:09,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:48:09,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:48:09,249 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:48:09,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:48:09,251 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:48:09,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:48:09,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:48:09,251 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:48:09,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:48:09,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:09,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:48:09,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:48:09,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:48:09,254 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-11-09 10:48:09,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:48:09,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:48:09,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:48:09,495 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:48:09,495 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:48:09,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-09 10:48:10,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:48:10,822 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:48:10,823 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-09 10:48:10,835 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd91b2842/8f5c892866d148e69bd105c86de107c0/FLAG9f5587bf9 [2024-11-09 10:48:11,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd91b2842/8f5c892866d148e69bd105c86de107c0 [2024-11-09 10:48:11,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:48:11,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:48:11,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:11,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:48:11,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:48:11,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,239 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6839302e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11, skipping insertion in model container [2024-11-09 10:48:11,239 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:48:11,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:11,467 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:48:11,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:48:11,491 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:48:11,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11 WrapperNode [2024-11-09 10:48:11,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:48:11,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:11,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:48:11,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:48:11,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,518 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-09 10:48:11,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:48:11,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:48:11,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:48:11,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:48:11,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,548 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 10:48:11,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:48:11,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:48:11,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:48:11,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:48:11,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (1/1) ... [2024-11-09 10:48:11,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:48:11,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:11,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:48:11,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:48:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:48:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:48:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:48:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:48:11,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:48:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:48:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:48:11,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:48:11,644 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:48:11,716 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:48:11,718 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:48:11,854 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:48:11,855 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:48:11,949 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:48:11,949 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 10:48:11,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:11 BoogieIcfgContainer [2024-11-09 10:48:11,949 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:48:11,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:48:11,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:48:11,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:48:11,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:48:11" (1/3) ... [2024-11-09 10:48:11,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258e7920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:11, skipping insertion in model container [2024-11-09 10:48:11,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:48:11" (2/3) ... [2024-11-09 10:48:11,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258e7920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:48:11, skipping insertion in model container [2024-11-09 10:48:11,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:48:11" (3/3) ... [2024-11-09 10:48:11,957 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-11-09 10:48:11,971 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:48:11,971 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:48:11,971 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:48:12,009 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:48:12,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:48:12,056 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-09 10:48:12,056 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:48:12,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 18 events. 2/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-11-09 10:48:12,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-09 10:48:12,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-09 10:48:12,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:48:12,076 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;@45c633b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:48:12,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:48:12,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:48:12,087 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-09 10:48:12,087 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:48:12,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:12,088 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:12,088 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:12,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:12,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1555143576, now seen corresponding path program 1 times [2024-11-09 10:48:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390355500] [2024-11-09 10:48:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:12,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390355500] [2024-11-09 10:48:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390355500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:48:12,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:48:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:48:12,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770150820] [2024-11-09 10:48:12,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:12,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:48:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:48:12,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:48:12,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:12,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:12,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:12,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:12,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:12,651 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-11-09 10:48:12,653 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:48:12,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 22 based on Foata normal form. 2/95 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2024-11-09 10:48:12,656 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-11-09 10:48:12,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-11-09 10:48:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:48:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:48:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-11-09 10:48:12,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-09 10:48:12,669 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-11-09 10:48:12,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-11-09 10:48:12,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:12,673 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-09 10:48:12,675 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} [2024-11-09 10:48:12,678 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-09 10:48:12,678 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-09 10:48:12,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:12,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:12,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:48:12,678 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:12,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash 546641926, now seen corresponding path program 1 times [2024-11-09 10:48:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:12,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265973512] [2024-11-09 10:48:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:12,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265973512] [2024-11-09 10:48:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265973512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216134007] [2024-11-09 10:48:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:12,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:12,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:48:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:12,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:13,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216134007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:13,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-09 10:48:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209338327] [2024-11-09 10:48:13,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:13,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 10:48:13,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:13,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 10:48:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 10:48:13,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:13,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:13,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:13,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:13,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:13,401 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-11-09 10:48:13,401 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-09 10:48:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 349 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2024-11-09 10:48:13,403 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-11-09 10:48:13,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-11-09 10:48:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:48:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:48:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-09 10:48:13,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-09 10:48:13,405 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-11-09 10:48:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-11-09 10:48:13,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:48:13,406 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-11-09 10:48:13,406 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} [2024-11-09 10:48:13,407 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-09 10:48:13,408 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-11-09 10:48:13,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:13,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:13,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:13,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:48:13,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:13,614 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:13,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1014487161, now seen corresponding path program 1 times [2024-11-09 10:48:13,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:13,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6308947] [2024-11-09 10:48:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6308947] [2024-11-09 10:48:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6308947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701796995] [2024-11-09 10:48:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:13,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:13,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:13,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:48:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:13,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:13,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:13,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701796995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:13,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:13,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-09 10:48:13,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351721301] [2024-11-09 10:48:13,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:13,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:13,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:13,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:13,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:13,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:13,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:13,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:13,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:14,093 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-11-09 10:48:14,094 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-09 10:48:14,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 298 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place. [2024-11-09 10:48:14,095 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-11-09 10:48:14,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-11-09 10:48:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:48:14,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:48:14,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-11-09 10:48:14,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-09 10:48:14,096 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-11-09 10:48:14,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-11-09 10:48:14,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:14,098 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-11-09 10:48:14,098 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} [2024-11-09 10:48:14,099 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-09 10:48:14,099 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-11-09 10:48:14,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.1) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:14,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:14,100 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:14,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:48:14,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-09 10:48:14,301 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:14,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1697698596, now seen corresponding path program 2 times [2024-11-09 10:48:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867971773] [2024-11-09 10:48:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:14,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867971773] [2024-11-09 10:48:14,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867971773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:14,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336787936] [2024-11-09 10:48:14,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:14,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:14,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:14,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:48:14,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:14,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:14,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:14,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336787936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:14,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-09 10:48:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94617020] [2024-11-09 10:48:14,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:14,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:48:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:48:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:48:14,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:14,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:14,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:14,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:14,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:14,897 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-11-09 10:48:14,897 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-09 10:48:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 581 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place. [2024-11-09 10:48:14,899 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-11-09 10:48:14,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-11-09 10:48:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:48:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:48:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-09 10:48:14,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-09 10:48:14,903 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-11-09 10:48:14,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-11-09 10:48:14,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:14,907 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-11-09 10:48:14,907 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} [2024-11-09 10:48:14,908 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-11-09 10:48:14,909 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-11-09 10:48:14,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:14,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:14,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:14,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:48:15,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:15,111 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:15,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1334400628, now seen corresponding path program 3 times [2024-11-09 10:48:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:15,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569820624] [2024-11-09 10:48:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:15,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569820624] [2024-11-09 10:48:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569820624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635436363] [2024-11-09 10:48:15,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:15,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:15,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:15,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:15,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:48:15,312 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:15,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:15,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 10:48:15,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635436363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:15,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:15,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-09 10:48:15,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588989079] [2024-11-09 10:48:15,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:15,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 10:48:15,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 10:48:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 10:48:15,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:15,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:15,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:15,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:15,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:15,625 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-11-09 10:48:15,626 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-09 10:48:15,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 691 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place. [2024-11-09 10:48:15,630 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-11-09 10:48:15,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-11-09 10:48:15,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:48:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:48:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-09 10:48:15,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:15,632 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-11-09 10:48:15,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-11-09 10:48:15,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:15,635 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-11-09 10:48:15,635 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} [2024-11-09 10:48:15,637 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-11-09 10:48:15,637 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-11-09 10:48:15,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:15,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:15,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:15,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:15,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:15,842 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:15,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1328110415, now seen corresponding path program 2 times [2024-11-09 10:48:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720158796] [2024-11-09 10:48:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720158796] [2024-11-09 10:48:15,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720158796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580757400] [2024-11-09 10:48:15,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:15,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:15,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:48:16,000 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:16,000 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:16,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:16,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580757400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:16,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:16,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 12 [2024-11-09 10:48:16,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844242354] [2024-11-09 10:48:16,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:16,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:16,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:16,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:16,242 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) [2024-11-09 10:48:16,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:16,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:16,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:16,366 INFO L124 PetriNetUnfolderBase]: 148/270 cut-off events. [2024-11-09 10:48:16,366 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-09 10:48:16,367 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. [2024-11-09 10:48:16,368 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-11-09 10:48:16,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 511 flow [2024-11-09 10:48:16,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:48:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:48:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-09 10:48:16,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-09 10:48:16,371 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 9 states and 87 transitions. [2024-11-09 10:48:16,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 511 flow [2024-11-09 10:48:16,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 461 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:16,377 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 310 flow [2024-11-09 10:48:16,377 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} [2024-11-09 10:48:16,378 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-09 10:48:16,378 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 310 flow [2024-11-09 10:48:16,378 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) [2024-11-09 10:48:16,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:16,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:16,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:48:16,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:16,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:16,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 599699803, now seen corresponding path program 3 times [2024-11-09 10:48:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110681542] [2024-11-09 10:48:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110681542] [2024-11-09 10:48:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110681542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854748349] [2024-11-09 10:48:16,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:16,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:16,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:16,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:16,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:48:16,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:16,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:16,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:16,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:16,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854748349] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:16,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 10:48:16,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 13 [2024-11-09 10:48:16,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671261455] [2024-11-09 10:48:16,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:48:16,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:48:16,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:48:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:48:16,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:16,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:16,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:16,974 INFO L124 PetriNetUnfolderBase]: 162/295 cut-off events. [2024-11-09 10:48:16,974 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-09 10:48:16,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 295 events. 162/295 cut-off events. For 479/479 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1060 event pairs, 38 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1039. Up to 253 conditions per place. [2024-11-09 10:48:16,976 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 48 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2024-11-09 10:48:16,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 495 flow [2024-11-09 10:48:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:48:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:48:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-09 10:48:16,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-09 10:48:16,980 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 310 flow. Second operand 5 states and 50 transitions. [2024-11-09 10:48:16,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 495 flow [2024-11-09 10:48:16,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 448 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-09 10:48:16,983 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 338 flow [2024-11-09 10:48:16,984 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=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2024-11-09 10:48:16,984 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 34 predicate places. [2024-11-09 10:48:16,984 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 338 flow [2024-11-09 10:48:16,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:16,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:16,985 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:17,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 10:48:17,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:17,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:17,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash -19846395, now seen corresponding path program 1 times [2024-11-09 10:48:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:17,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568050272] [2024-11-09 10:48:17,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:17,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:17,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568050272] [2024-11-09 10:48:17,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568050272] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:17,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011493751] [2024-11-09 10:48:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:17,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:17,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:17,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:17,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:48:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:17,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:17,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:17,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:18,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011493751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:18,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:18,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-09 10:48:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220190681] [2024-11-09 10:48:18,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:18,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:18,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:18,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:18,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 338 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:18,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:18,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:18,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:19,130 INFO L124 PetriNetUnfolderBase]: 232/442 cut-off events. [2024-11-09 10:48:19,130 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2024-11-09 10:48:19,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 442 events. 232/442 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1926 event pairs, 18 based on Foata normal form. 3/441 useless extension candidates. Maximal degree in co-relation 1539. Up to 191 conditions per place. [2024-11-09 10:48:19,132 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 76 selfloop transitions, 51 changer transitions 30/158 dead transitions. [2024-11-09 10:48:19,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 158 transitions, 1100 flow [2024-11-09 10:48:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:48:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:48:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-11-09 10:48:19,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-11-09 10:48:19,135 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 338 flow. Second operand 24 states and 223 transitions. [2024-11-09 10:48:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 158 transitions, 1100 flow [2024-11-09 10:48:19,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 158 transitions, 1078 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-09 10:48:19,139 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 634 flow [2024-11-09 10:48:19,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=634, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2024-11-09 10:48:19,140 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 65 predicate places. [2024-11-09 10:48:19,140 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 634 flow [2024-11-09 10:48:19,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:19,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:19,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:19,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:19,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:19,345 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:19,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1533874027, now seen corresponding path program 2 times [2024-11-09 10:48:19,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:19,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563646827] [2024-11-09 10:48:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:19,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563646827] [2024-11-09 10:48:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563646827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:19,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820325056] [2024-11-09 10:48:19,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:19,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:19,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:19,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:19,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:48:19,724 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:19,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:19,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:19,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:19,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:19,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:20,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820325056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:20,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:20,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-09 10:48:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753864864] [2024-11-09 10:48:20,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:20,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:20,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:20,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 634 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:20,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:20,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:20,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:21,155 INFO L124 PetriNetUnfolderBase]: 262/503 cut-off events. [2024-11-09 10:48:21,155 INFO L125 PetriNetUnfolderBase]: For 2375/2375 co-relation queries the response was YES. [2024-11-09 10:48:21,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 503 events. 262/503 cut-off events. For 2375/2375 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2312 event pairs, 15 based on Foata normal form. 3/502 useless extension candidates. Maximal degree in co-relation 2312. Up to 200 conditions per place. [2024-11-09 10:48:21,158 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 76 selfloop transitions, 75 changer transitions 16/168 dead transitions. [2024-11-09 10:48:21,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 168 transitions, 1539 flow [2024-11-09 10:48:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 10:48:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-09 10:48:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 228 transitions. [2024-11-09 10:48:21,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.456 [2024-11-09 10:48:21,160 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 634 flow. Second operand 25 states and 228 transitions. [2024-11-09 10:48:21,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 168 transitions, 1539 flow [2024-11-09 10:48:21,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 168 transitions, 1346 flow, removed 77 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:21,170 INFO L231 Difference]: Finished difference. Result has 105 places, 108 transitions, 1030 flow [2024-11-09 10:48:21,170 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1030, PETRI_PLACES=105, PETRI_TRANSITIONS=108} [2024-11-09 10:48:21,171 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 83 predicate places. [2024-11-09 10:48:21,171 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 108 transitions, 1030 flow [2024-11-09 10:48:21,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:21,171 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:21,171 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:21,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 10:48:21,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-09 10:48:21,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:21,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1455225787, now seen corresponding path program 3 times [2024-11-09 10:48:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522186436] [2024-11-09 10:48:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:21,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522186436] [2024-11-09 10:48:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522186436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216817625] [2024-11-09 10:48:21,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:21,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:21,671 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:21,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:48:21,719 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:21,719 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:21,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:21,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:21,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216817625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:22,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:22,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-09 10:48:22,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429520361] [2024-11-09 10:48:22,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:22,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:22,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:22,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:22,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 108 transitions, 1030 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:22,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:22,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:22,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:23,080 INFO L124 PetriNetUnfolderBase]: 265/513 cut-off events. [2024-11-09 10:48:23,080 INFO L125 PetriNetUnfolderBase]: For 2975/2975 co-relation queries the response was YES. [2024-11-09 10:48:23,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 513 events. 265/513 cut-off events. For 2975/2975 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2391 event pairs, 15 based on Foata normal form. 3/510 useless extension candidates. Maximal degree in co-relation 2623. Up to 206 conditions per place. [2024-11-09 10:48:23,085 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 81 selfloop transitions, 80 changer transitions 14/176 dead transitions. [2024-11-09 10:48:23,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 176 transitions, 1784 flow [2024-11-09 10:48:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 10:48:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 10:48:23,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 237 transitions. [2024-11-09 10:48:23,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45576923076923076 [2024-11-09 10:48:23,104 INFO L175 Difference]: Start difference. First operand has 105 places, 108 transitions, 1030 flow. Second operand 26 states and 237 transitions. [2024-11-09 10:48:23,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 176 transitions, 1784 flow [2024-11-09 10:48:23,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 176 transitions, 1419 flow, removed 164 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:23,119 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 1042 flow [2024-11-09 10:48:23,120 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1042, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-09 10:48:23,121 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 97 predicate places. [2024-11-09 10:48:23,122 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 1042 flow [2024-11-09 10:48:23,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:23,122 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:23,122 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:23,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:23,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 10:48:23,326 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:23,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1930971081, now seen corresponding path program 4 times [2024-11-09 10:48:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:23,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242835482] [2024-11-09 10:48:23,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:23,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242835482] [2024-11-09 10:48:23,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242835482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:23,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817302247] [2024-11-09 10:48:23,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:23,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:23,546 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:23,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:48:23,594 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:23,595 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:23,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:23,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:23,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817302247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:24,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:24,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949030] [2024-11-09 10:48:24,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:24,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:24,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:24,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 1042 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:24,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:24,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:24,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:25,125 INFO L124 PetriNetUnfolderBase]: 320/615 cut-off events. [2024-11-09 10:48:25,125 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2024-11-09 10:48:25,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 615 events. 320/615 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2977 event pairs, 33 based on Foata normal form. 3/602 useless extension candidates. Maximal degree in co-relation 2928. Up to 470 conditions per place. [2024-11-09 10:48:25,130 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 128 selfloop transitions, 46 changer transitions 15/190 dead transitions. [2024-11-09 10:48:25,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 1881 flow [2024-11-09 10:48:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:48:25,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:48:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-11-09 10:48:25,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-09 10:48:25,132 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 1042 flow. Second operand 18 states and 164 transitions. [2024-11-09 10:48:25,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 1881 flow [2024-11-09 10:48:25,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 190 transitions, 1630 flow, removed 56 selfloop flow, removed 23 redundant places. [2024-11-09 10:48:25,142 INFO L231 Difference]: Finished difference. Result has 120 places, 147 transitions, 1270 flow [2024-11-09 10:48:25,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1270, PETRI_PLACES=120, PETRI_TRANSITIONS=147} [2024-11-09 10:48:25,143 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 98 predicate places. [2024-11-09 10:48:25,143 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 147 transitions, 1270 flow [2024-11-09 10:48:25,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:25,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:25,143 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:25,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:25,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 10:48:25,347 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:25,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash -498701196, now seen corresponding path program 4 times [2024-11-09 10:48:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262146907] [2024-11-09 10:48:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262146907] [2024-11-09 10:48:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262146907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:25,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083833577] [2024-11-09 10:48:25,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:25,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:25,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:25,482 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:25,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 10:48:25,526 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:25,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:25,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 10:48:25,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083833577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-09 10:48:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895685578] [2024-11-09 10:48:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:25,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 10:48:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:25,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 10:48:25,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-09 10:48:25,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:25,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 147 transitions, 1270 flow. Second operand has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:25,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:25,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:26,009 INFO L124 PetriNetUnfolderBase]: 312/603 cut-off events. [2024-11-09 10:48:26,010 INFO L125 PetriNetUnfolderBase]: For 1935/1935 co-relation queries the response was YES. [2024-11-09 10:48:26,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 603 events. 312/603 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2941 event pairs, 31 based on Foata normal form. 4/593 useless extension candidates. Maximal degree in co-relation 2936. Up to 472 conditions per place. [2024-11-09 10:48:26,014 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 127 selfloop transitions, 30 changer transitions 25/183 dead transitions. [2024-11-09 10:48:26,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 183 transitions, 1822 flow [2024-11-09 10:48:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:48:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:48:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-09 10:48:26,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-09 10:48:26,015 INFO L175 Difference]: Start difference. First operand has 120 places, 147 transitions, 1270 flow. Second operand 13 states and 122 transitions. [2024-11-09 10:48:26,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 183 transitions, 1822 flow [2024-11-09 10:48:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 183 transitions, 1724 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:26,029 INFO L231 Difference]: Finished difference. Result has 130 places, 143 transitions, 1214 flow [2024-11-09 10:48:26,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1214, PETRI_PLACES=130, PETRI_TRANSITIONS=143} [2024-11-09 10:48:26,030 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 108 predicate places. [2024-11-09 10:48:26,030 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 143 transitions, 1214 flow [2024-11-09 10:48:26,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:26,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:26,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:26,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 10:48:26,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 10:48:26,235 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:26,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1354805163, now seen corresponding path program 5 times [2024-11-09 10:48:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689703558] [2024-11-09 10:48:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689703558] [2024-11-09 10:48:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689703558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:26,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304210888] [2024-11-09 10:48:26,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:26,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:26,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:26,485 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:26,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 10:48:26,529 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:26,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:26,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:26,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:26,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:26,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:27,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304210888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:27,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:27,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:27,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508749190] [2024-11-09 10:48:27,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:27,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:27,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:27,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:27,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 143 transitions, 1214 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:27,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:27,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:27,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:27,938 INFO L124 PetriNetUnfolderBase]: 336/647 cut-off events. [2024-11-09 10:48:27,938 INFO L125 PetriNetUnfolderBase]: For 2640/2640 co-relation queries the response was YES. [2024-11-09 10:48:27,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 647 events. 336/647 cut-off events. For 2640/2640 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3189 event pairs, 31 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3245. Up to 462 conditions per place. [2024-11-09 10:48:27,943 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 135 selfloop transitions, 56 changer transitions 9/201 dead transitions. [2024-11-09 10:48:27,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 201 transitions, 2090 flow [2024-11-09 10:48:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 10:48:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-09 10:48:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 168 transitions. [2024-11-09 10:48:27,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-11-09 10:48:27,944 INFO L175 Difference]: Start difference. First operand has 130 places, 143 transitions, 1214 flow. Second operand 19 states and 168 transitions. [2024-11-09 10:48:27,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 201 transitions, 2090 flow [2024-11-09 10:48:27,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 201 transitions, 1971 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:27,968 INFO L231 Difference]: Finished difference. Result has 140 places, 161 transitions, 1557 flow [2024-11-09 10:48:27,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1557, PETRI_PLACES=140, PETRI_TRANSITIONS=161} [2024-11-09 10:48:27,968 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 118 predicate places. [2024-11-09 10:48:27,969 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 1557 flow [2024-11-09 10:48:27,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:27,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:27,969 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:27,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:28,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 10:48:28,173 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:28,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:28,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1393115503, now seen corresponding path program 6 times [2024-11-09 10:48:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643337143] [2024-11-09 10:48:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643337143] [2024-11-09 10:48:28,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643337143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:28,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265126484] [2024-11-09 10:48:28,388 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:28,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:28,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:28,390 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:28,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 10:48:28,550 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:28,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:28,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:28,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:28,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:33,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265126484] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:33,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:33,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:33,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564462283] [2024-11-09 10:48:33,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:33,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:33,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:33,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:33,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 1557 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:33,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:33,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:33,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:33,985 INFO L124 PetriNetUnfolderBase]: 341/663 cut-off events. [2024-11-09 10:48:33,985 INFO L125 PetriNetUnfolderBase]: For 3499/3499 co-relation queries the response was YES. [2024-11-09 10:48:33,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3681 conditions, 663 events. 341/663 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3316 event pairs, 33 based on Foata normal form. 4/653 useless extension candidates. Maximal degree in co-relation 3588. Up to 535 conditions per place. [2024-11-09 10:48:33,990 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 141 selfloop transitions, 42 changer transitions 10/194 dead transitions. [2024-11-09 10:48:33,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 194 transitions, 2134 flow [2024-11-09 10:48:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 10:48:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 10:48:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 131 transitions. [2024-11-09 10:48:33,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-11-09 10:48:33,991 INFO L175 Difference]: Start difference. First operand has 140 places, 161 transitions, 1557 flow. Second operand 15 states and 131 transitions. [2024-11-09 10:48:33,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 194 transitions, 2134 flow [2024-11-09 10:48:34,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 194 transitions, 1872 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:34,006 INFO L231 Difference]: Finished difference. Result has 149 places, 164 transitions, 1467 flow [2024-11-09 10:48:34,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1467, PETRI_PLACES=149, PETRI_TRANSITIONS=164} [2024-11-09 10:48:34,007 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 127 predicate places. [2024-11-09 10:48:34,007 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 164 transitions, 1467 flow [2024-11-09 10:48:34,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:34,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:34,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:34,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:34,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 10:48:34,209 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:34,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1271688273, now seen corresponding path program 7 times [2024-11-09 10:48:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567922237] [2024-11-09 10:48:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567922237] [2024-11-09 10:48:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567922237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577324672] [2024-11-09 10:48:34,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:34,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:34,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:34,491 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:34,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 10:48:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:34,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:34,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:34,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:35,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577324672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:35,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:35,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837453343] [2024-11-09 10:48:35,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:35,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:35,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:35,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:35,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:35,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:35,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 164 transitions, 1467 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:35,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:35,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:35,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:35,873 INFO L124 PetriNetUnfolderBase]: 330/632 cut-off events. [2024-11-09 10:48:35,873 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2024-11-09 10:48:35,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 632 events. 330/632 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3082 event pairs, 31 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3305. Up to 473 conditions per place. [2024-11-09 10:48:35,878 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 127 selfloop transitions, 57 changer transitions 9/194 dead transitions. [2024-11-09 10:48:35,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 194 transitions, 1996 flow [2024-11-09 10:48:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-09 10:48:35,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-09 10:48:35,880 INFO L175 Difference]: Start difference. First operand has 149 places, 164 transitions, 1467 flow. Second operand 17 states and 145 transitions. [2024-11-09 10:48:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 194 transitions, 1996 flow [2024-11-09 10:48:35,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 194 transitions, 1883 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:35,894 INFO L231 Difference]: Finished difference. Result has 154 places, 165 transitions, 1552 flow [2024-11-09 10:48:35,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1552, PETRI_PLACES=154, PETRI_TRANSITIONS=165} [2024-11-09 10:48:35,895 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 132 predicate places. [2024-11-09 10:48:35,895 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 165 transitions, 1552 flow [2024-11-09 10:48:35,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:35,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:35,897 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:35,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 10:48:36,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:36,098 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:36,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1294231689, now seen corresponding path program 8 times [2024-11-09 10:48:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:36,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240752533] [2024-11-09 10:48:36,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:36,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240752533] [2024-11-09 10:48:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240752533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603426350] [2024-11-09 10:48:36,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:36,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:36,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:36,329 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:36,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 10:48:36,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:36,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:36,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:36,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:36,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:36,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603426350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:37,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548869231] [2024-11-09 10:48:37,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:37,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:37,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:37,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 165 transitions, 1552 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:37,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:37,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:38,094 INFO L124 PetriNetUnfolderBase]: 376/721 cut-off events. [2024-11-09 10:48:38,094 INFO L125 PetriNetUnfolderBase]: For 5475/5475 co-relation queries the response was YES. [2024-11-09 10:48:38,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 721 events. 376/721 cut-off events. For 5475/5475 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3629 event pairs, 33 based on Foata normal form. 2/711 useless extension candidates. Maximal degree in co-relation 4151. Up to 570 conditions per place. [2024-11-09 10:48:38,101 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 168 selfloop transitions, 56 changer transitions 7/232 dead transitions. [2024-11-09 10:48:38,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 232 transitions, 2662 flow [2024-11-09 10:48:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 10:48:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 10:48:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 197 transitions. [2024-11-09 10:48:38,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4282608695652174 [2024-11-09 10:48:38,103 INFO L175 Difference]: Start difference. First operand has 154 places, 165 transitions, 1552 flow. Second operand 23 states and 197 transitions. [2024-11-09 10:48:38,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 232 transitions, 2662 flow [2024-11-09 10:48:38,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 232 transitions, 2473 flow, removed 48 selfloop flow, removed 13 redundant places. [2024-11-09 10:48:38,122 INFO L231 Difference]: Finished difference. Result has 168 places, 188 transitions, 1988 flow [2024-11-09 10:48:38,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1988, PETRI_PLACES=168, PETRI_TRANSITIONS=188} [2024-11-09 10:48:38,123 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 146 predicate places. [2024-11-09 10:48:38,123 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 188 transitions, 1988 flow [2024-11-09 10:48:38,123 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) [2024-11-09 10:48:38,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:38,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:38,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 10:48:38,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 10:48:38,328 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:38,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 434762513, now seen corresponding path program 9 times [2024-11-09 10:48:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458170412] [2024-11-09 10:48:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:38,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:38,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:38,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458170412] [2024-11-09 10:48:38,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458170412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281422709] [2024-11-09 10:48:38,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:38,540 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:38,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 10:48:38,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 10:48:38,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:38,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:38,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:38,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281422709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:39,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317364194] [2024-11-09 10:48:39,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:39,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:39,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:39,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 188 transitions, 1988 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:39,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:39,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:39,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:39,744 INFO L124 PetriNetUnfolderBase]: 378/733 cut-off events. [2024-11-09 10:48:39,744 INFO L125 PetriNetUnfolderBase]: For 5322/5322 co-relation queries the response was YES. [2024-11-09 10:48:39,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 733 events. 378/733 cut-off events. For 5322/5322 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3742 event pairs, 34 based on Foata normal form. 3/724 useless extension candidates. Maximal degree in co-relation 4312. Up to 632 conditions per place. [2024-11-09 10:48:39,753 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 170 selfloop transitions, 42 changer transitions 6/219 dead transitions. [2024-11-09 10:48:39,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 219 transitions, 2616 flow [2024-11-09 10:48:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:48:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:48:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 149 transitions. [2024-11-09 10:48:39,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-11-09 10:48:39,755 INFO L175 Difference]: Start difference. First operand has 168 places, 188 transitions, 1988 flow. Second operand 18 states and 149 transitions. [2024-11-09 10:48:39,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 219 transitions, 2616 flow [2024-11-09 10:48:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 219 transitions, 2303 flow, removed 141 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:39,776 INFO L231 Difference]: Finished difference. Result has 180 places, 192 transitions, 1870 flow [2024-11-09 10:48:39,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1870, PETRI_PLACES=180, PETRI_TRANSITIONS=192} [2024-11-09 10:48:39,779 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 158 predicate places. [2024-11-09 10:48:39,779 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 192 transitions, 1870 flow [2024-11-09 10:48:39,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:39,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:39,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:39,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:39,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 10:48:39,980 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:39,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:39,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1215583449, now seen corresponding path program 10 times [2024-11-09 10:48:39,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:39,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029883090] [2024-11-09 10:48:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:39,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029883090] [2024-11-09 10:48:40,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029883090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:40,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635418215] [2024-11-09 10:48:40,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:40,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:40,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:40,240 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:40,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 10:48:40,283 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:40,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:40,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:40,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:40,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635418215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:41,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43293057] [2024-11-09 10:48:41,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:41,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:41,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:41,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:41,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:41,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 192 transitions, 1870 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:41,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:41,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:41,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:41,651 INFO L124 PetriNetUnfolderBase]: 375/714 cut-off events. [2024-11-09 10:48:41,652 INFO L125 PetriNetUnfolderBase]: For 4305/4305 co-relation queries the response was YES. [2024-11-09 10:48:41,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 714 events. 375/714 cut-off events. For 4305/4305 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3590 event pairs, 34 based on Foata normal form. 2/700 useless extension candidates. Maximal degree in co-relation 4011. Up to 577 conditions per place. [2024-11-09 10:48:41,659 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 158 selfloop transitions, 57 changer transitions 8/224 dead transitions. [2024-11-09 10:48:41,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 224 transitions, 2454 flow [2024-11-09 10:48:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 10:48:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 10:48:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 166 transitions. [2024-11-09 10:48:41,660 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415 [2024-11-09 10:48:41,660 INFO L175 Difference]: Start difference. First operand has 180 places, 192 transitions, 1870 flow. Second operand 20 states and 166 transitions. [2024-11-09 10:48:41,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 224 transitions, 2454 flow [2024-11-09 10:48:41,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 224 transitions, 2324 flow, removed 38 selfloop flow, removed 12 redundant places. [2024-11-09 10:48:41,679 INFO L231 Difference]: Finished difference. Result has 189 places, 193 transitions, 1935 flow [2024-11-09 10:48:41,679 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=189, PETRI_TRANSITIONS=193} [2024-11-09 10:48:41,679 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 167 predicate places. [2024-11-09 10:48:41,680 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 193 transitions, 1935 flow [2024-11-09 10:48:41,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:41,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:41,680 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:41,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:41,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 10:48:41,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:41,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1748970377, now seen corresponding path program 11 times [2024-11-09 10:48:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:41,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240149757] [2024-11-09 10:48:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240149757] [2024-11-09 10:48:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240149757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931134054] [2024-11-09 10:48:42,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:48:42,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:42,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:42,153 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:42,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 10:48:42,207 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-09 10:48:42,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:42,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:42,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:42,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:43,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931134054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:43,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:43,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654459329] [2024-11-09 10:48:43,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:43,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:43,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:43,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:43,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 193 transitions, 1935 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:43,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:43,505 INFO L124 PetriNetUnfolderBase]: 405/766 cut-off events. [2024-11-09 10:48:43,505 INFO L125 PetriNetUnfolderBase]: For 6802/6802 co-relation queries the response was YES. [2024-11-09 10:48:43,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4791 conditions, 766 events. 405/766 cut-off events. For 6802/6802 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3882 event pairs, 35 based on Foata normal form. 2/756 useless extension candidates. Maximal degree in co-relation 4694. Up to 620 conditions per place. [2024-11-09 10:48:43,512 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 172 selfloop transitions, 54 changer transitions 9/236 dead transitions. [2024-11-09 10:48:43,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 236 transitions, 2908 flow [2024-11-09 10:48:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 10:48:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-09 10:48:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-09 10:48:43,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-11-09 10:48:43,513 INFO L175 Difference]: Start difference. First operand has 189 places, 193 transitions, 1935 flow. Second operand 17 states and 143 transitions. [2024-11-09 10:48:43,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 236 transitions, 2908 flow [2024-11-09 10:48:43,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 236 transitions, 2737 flow, removed 36 selfloop flow, removed 18 redundant places. [2024-11-09 10:48:43,533 INFO L231 Difference]: Finished difference. Result has 191 places, 206 transitions, 2242 flow [2024-11-09 10:48:43,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2242, PETRI_PLACES=191, PETRI_TRANSITIONS=206} [2024-11-09 10:48:43,534 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 169 predicate places. [2024-11-09 10:48:43,534 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 206 transitions, 2242 flow [2024-11-09 10:48:43,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:43,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:43,534 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:43,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:43,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:43,734 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:43,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1116526290, now seen corresponding path program 4 times [2024-11-09 10:48:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:43,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093663986] [2024-11-09 10:48:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:43,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093663986] [2024-11-09 10:48:43,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093663986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133230751] [2024-11-09 10:48:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:48:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:43,853 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:43,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 10:48:43,909 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:48:43,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:43,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:48:43,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:43,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133230751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:44,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-11-09 10:48:44,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395775659] [2024-11-09 10:48:44,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:44,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 10:48:44,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 10:48:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-09 10:48:44,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:44,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 206 transitions, 2242 flow. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:44,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:44,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:44,563 INFO L124 PetriNetUnfolderBase]: 452/847 cut-off events. [2024-11-09 10:48:44,563 INFO L125 PetriNetUnfolderBase]: For 10209/10209 co-relation queries the response was YES. [2024-11-09 10:48:44,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5625 conditions, 847 events. 452/847 cut-off events. For 10209/10209 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4395 event pairs, 28 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 5521. Up to 639 conditions per place. [2024-11-09 10:48:44,572 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 195 selfloop transitions, 47 changer transitions 6/249 dead transitions. [2024-11-09 10:48:44,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 249 transitions, 3303 flow [2024-11-09 10:48:44,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 10:48:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 10:48:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-09 10:48:44,573 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-09 10:48:44,574 INFO L175 Difference]: Start difference. First operand has 191 places, 206 transitions, 2242 flow. Second operand 13 states and 122 transitions. [2024-11-09 10:48:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 249 transitions, 3303 flow [2024-11-09 10:48:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 249 transitions, 3020 flow, removed 116 selfloop flow, removed 13 redundant places. [2024-11-09 10:48:44,602 INFO L231 Difference]: Finished difference. Result has 191 places, 220 transitions, 2344 flow [2024-11-09 10:48:44,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2344, PETRI_PLACES=191, PETRI_TRANSITIONS=220} [2024-11-09 10:48:44,603 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 169 predicate places. [2024-11-09 10:48:44,603 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 220 transitions, 2344 flow [2024-11-09 10:48:44,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:44,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:44,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:44,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 10:48:44,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:44,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:44,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash 388570195, now seen corresponding path program 12 times [2024-11-09 10:48:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:44,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928922941] [2024-11-09 10:48:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928922941] [2024-11-09 10:48:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928922941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133855049] [2024-11-09 10:48:45,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:48:45,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:45,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:45,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:45,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 10:48:45,088 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:48:45,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:45,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:45,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:45,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133855049] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:45,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:48:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325379603] [2024-11-09 10:48:45,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:45,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:48:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:48:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:48:45,621 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:45,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 220 transitions, 2344 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:45,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:45,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:45,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:50,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:48:54,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:48:54,707 INFO L124 PetriNetUnfolderBase]: 495/945 cut-off events. [2024-11-09 10:48:54,707 INFO L125 PetriNetUnfolderBase]: For 12536/12536 co-relation queries the response was YES. [2024-11-09 10:48:54,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 945 events. 495/945 cut-off events. For 12536/12536 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5175 event pairs, 39 based on Foata normal form. 3/936 useless extension candidates. Maximal degree in co-relation 6094. Up to 721 conditions per place. [2024-11-09 10:48:54,714 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 201 selfloop transitions, 70 changer transitions 27/299 dead transitions. [2024-11-09 10:48:54,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 299 transitions, 3834 flow [2024-11-09 10:48:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:48:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:48:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 207 transitions. [2024-11-09 10:48:54,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-09 10:48:54,715 INFO L175 Difference]: Start difference. First operand has 191 places, 220 transitions, 2344 flow. Second operand 24 states and 207 transitions. [2024-11-09 10:48:54,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 299 transitions, 3834 flow [2024-11-09 10:48:54,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 299 transitions, 3627 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-11-09 10:48:54,747 INFO L231 Difference]: Finished difference. Result has 220 places, 242 transitions, 2842 flow [2024-11-09 10:48:54,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2842, PETRI_PLACES=220, PETRI_TRANSITIONS=242} [2024-11-09 10:48:54,748 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 198 predicate places. [2024-11-09 10:48:54,748 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 242 transitions, 2842 flow [2024-11-09 10:48:54,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:54,748 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:54,748 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:54,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 10:48:54,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 10:48:54,950 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:54,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 437281723, now seen corresponding path program 13 times [2024-11-09 10:48:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290199499] [2024-11-09 10:48:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:54,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:55,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290199499] [2024-11-09 10:48:55,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290199499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:55,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944617580] [2024-11-09 10:48:55,210 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:48:55,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:55,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:55,212 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:55,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 10:48:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:55,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:55,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:55,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944617580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:55,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-09 10:48:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801139197] [2024-11-09 10:48:55,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:55,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:55,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:55,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 2842 flow. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:55,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:55,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:55,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:56,653 INFO L124 PetriNetUnfolderBase]: 524/995 cut-off events. [2024-11-09 10:48:56,653 INFO L125 PetriNetUnfolderBase]: For 16823/16823 co-relation queries the response was YES. [2024-11-09 10:48:56,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 995 events. 524/995 cut-off events. For 16823/16823 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5481 event pairs, 38 based on Foata normal form. 3/986 useless extension candidates. Maximal degree in co-relation 7032. Up to 725 conditions per place. [2024-11-09 10:48:56,662 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 199 selfloop transitions, 96 changer transitions 13/309 dead transitions. [2024-11-09 10:48:56,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 309 transitions, 4368 flow [2024-11-09 10:48:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 10:48:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 10:48:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 211 transitions. [2024-11-09 10:48:56,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4395833333333333 [2024-11-09 10:48:56,663 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 2842 flow. Second operand 24 states and 211 transitions. [2024-11-09 10:48:56,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 309 transitions, 4368 flow [2024-11-09 10:48:56,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 309 transitions, 3953 flow, removed 190 selfloop flow, removed 8 redundant places. [2024-11-09 10:48:56,732 INFO L231 Difference]: Finished difference. Result has 237 places, 262 transitions, 3268 flow [2024-11-09 10:48:56,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3268, PETRI_PLACES=237, PETRI_TRANSITIONS=262} [2024-11-09 10:48:56,733 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 215 predicate places. [2024-11-09 10:48:56,733 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 262 transitions, 3268 flow [2024-11-09 10:48:56,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:56,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:56,733 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:56,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 10:48:56,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 10:48:56,934 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:56,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:56,934 INFO L85 PathProgramCache]: Analyzing trace with hash 515929963, now seen corresponding path program 14 times [2024-11-09 10:48:56,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:56,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225923066] [2024-11-09 10:48:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:56,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225923066] [2024-11-09 10:48:57,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225923066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338892558] [2024-11-09 10:48:57,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:48:57,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:57,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:57,215 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:57,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 10:48:57,277 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:48:57,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:57,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:57,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:57,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:48:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338892558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:48:57,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:48:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-09 10:48:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916582417] [2024-11-09 10:48:57,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:48:57,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 10:48:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:48:57,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 10:48:57,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-09 10:48:57,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:48:57,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 262 transitions, 3268 flow. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:57,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:48:57,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:48:57,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:48:58,808 INFO L124 PetriNetUnfolderBase]: 523/1002 cut-off events. [2024-11-09 10:48:58,808 INFO L125 PetriNetUnfolderBase]: For 17182/17182 co-relation queries the response was YES. [2024-11-09 10:48:58,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7257 conditions, 1002 events. 523/1002 cut-off events. For 17182/17182 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5566 event pairs, 36 based on Foata normal form. 3/991 useless extension candidates. Maximal degree in co-relation 7050. Up to 729 conditions per place. [2024-11-09 10:48:58,817 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 205 selfloop transitions, 101 changer transitions 12/319 dead transitions. [2024-11-09 10:48:58,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 319 transitions, 4537 flow [2024-11-09 10:48:58,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 10:48:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-09 10:48:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 228 transitions. [2024-11-09 10:48:58,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43846153846153846 [2024-11-09 10:48:58,819 INFO L175 Difference]: Start difference. First operand has 237 places, 262 transitions, 3268 flow. Second operand 26 states and 228 transitions. [2024-11-09 10:48:58,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 319 transitions, 4537 flow [2024-11-09 10:48:58,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 319 transitions, 3776 flow, removed 351 selfloop flow, removed 9 redundant places. [2024-11-09 10:48:58,875 INFO L231 Difference]: Finished difference. Result has 253 places, 269 transitions, 3182 flow [2024-11-09 10:48:58,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2780, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3182, PETRI_PLACES=253, PETRI_TRANSITIONS=269} [2024-11-09 10:48:58,875 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 231 predicate places. [2024-11-09 10:48:58,876 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 269 transitions, 3182 flow [2024-11-09 10:48:58,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:48:58,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:48:58,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:48:58,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 10:48:59,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:59,076 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:48:59,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:48:59,077 INFO L85 PathProgramCache]: Analyzing trace with hash -733832695, now seen corresponding path program 15 times [2024-11-09 10:48:59,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:48:59,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080440703] [2024-11-09 10:48:59,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:48:59,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:48:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:48:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:48:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080440703] [2024-11-09 10:48:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080440703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:48:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63156832] [2024-11-09 10:48:59,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 10:48:59,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:48:59,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:48:59,346 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:48:59,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 10:48:59,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 10:48:59,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:48:59,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:48:59,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:48:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:48:59,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63156832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:00,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:00,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:49:00,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269575710] [2024-11-09 10:49:00,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:00,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:49:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:49:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:49:00,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:00,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 269 transitions, 3182 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:00,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:00,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:00,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:00,902 INFO L124 PetriNetUnfolderBase]: 547/1045 cut-off events. [2024-11-09 10:49:00,902 INFO L125 PetriNetUnfolderBase]: For 16653/16653 co-relation queries the response was YES. [2024-11-09 10:49:00,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 1045 events. 547/1045 cut-off events. For 16653/16653 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5868 event pairs, 41 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7272. Up to 889 conditions per place. [2024-11-09 10:49:00,910 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 248 selfloop transitions, 56 changer transitions 8/313 dead transitions. [2024-11-09 10:49:00,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 313 transitions, 4319 flow [2024-11-09 10:49:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 10:49:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-09 10:49:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 172 transitions. [2024-11-09 10:49:00,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-11-09 10:49:00,911 INFO L175 Difference]: Start difference. First operand has 253 places, 269 transitions, 3182 flow. Second operand 21 states and 172 transitions. [2024-11-09 10:49:00,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 313 transitions, 4319 flow [2024-11-09 10:49:00,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 313 transitions, 3962 flow, removed 118 selfloop flow, removed 20 redundant places. [2024-11-09 10:49:00,964 INFO L231 Difference]: Finished difference. Result has 256 places, 279 transitions, 3282 flow [2024-11-09 10:49:00,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3282, PETRI_PLACES=256, PETRI_TRANSITIONS=279} [2024-11-09 10:49:00,965 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 234 predicate places. [2024-11-09 10:49:00,965 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 279 transitions, 3282 flow [2024-11-09 10:49:00,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:00,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:00,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:00,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:01,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:01,166 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:49:01,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -812480935, now seen corresponding path program 16 times [2024-11-09 10:49:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602546050] [2024-11-09 10:49:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:01,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602546050] [2024-11-09 10:49:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602546050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106026205] [2024-11-09 10:49:01,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 10:49:01,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:01,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:01,406 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:01,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 10:49:01,452 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 10:49:01,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:01,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:49:01,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:01,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:02,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106026205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:02,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:02,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:49:02,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720314056] [2024-11-09 10:49:02,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:02,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:49:02,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:49:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:49:02,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:02,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 279 transitions, 3282 flow. Second operand has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:02,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:02,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:03,371 INFO L124 PetriNetUnfolderBase]: 548/1049 cut-off events. [2024-11-09 10:49:03,371 INFO L125 PetriNetUnfolderBase]: For 13939/13939 co-relation queries the response was YES. [2024-11-09 10:49:03,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1049 events. 548/1049 cut-off events. For 13939/13939 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5887 event pairs, 41 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7094. Up to 892 conditions per place. [2024-11-09 10:49:03,380 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 253 selfloop transitions, 57 changer transitions 8/319 dead transitions. [2024-11-09 10:49:03,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 319 transitions, 4221 flow [2024-11-09 10:49:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 10:49:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 10:49:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 186 transitions. [2024-11-09 10:49:03,381 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-09 10:49:03,381 INFO L175 Difference]: Start difference. First operand has 256 places, 279 transitions, 3282 flow. Second operand 22 states and 186 transitions. [2024-11-09 10:49:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 319 transitions, 4221 flow [2024-11-09 10:49:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 319 transitions, 3971 flow, removed 95 selfloop flow, removed 16 redundant places. [2024-11-09 10:49:03,438 INFO L231 Difference]: Finished difference. Result has 262 places, 282 transitions, 3331 flow [2024-11-09 10:49:03,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3331, PETRI_PLACES=262, PETRI_TRANSITIONS=282} [2024-11-09 10:49:03,438 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 240 predicate places. [2024-11-09 10:49:03,438 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 282 transitions, 3331 flow [2024-11-09 10:49:03,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.833333333333333) internal successors, (105), 18 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:03,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:03,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:03,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-09 10:49:03,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 10:49:03,640 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:49:03,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash 972618091, now seen corresponding path program 17 times [2024-11-09 10:49:03,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045710483] [2024-11-09 10:49:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045710483] [2024-11-09 10:49:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045710483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341978080] [2024-11-09 10:49:03,875 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 10:49:03,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:03,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:03,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:03,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 10:49:03,947 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:49:03,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:03,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:49:03,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:04,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341978080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:04,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:04,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:49:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343670153] [2024-11-09 10:49:04,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:04,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:49:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:49:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:49:04,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:04,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 282 transitions, 3331 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:04,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:04,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:05,247 INFO L124 PetriNetUnfolderBase]: 550/1063 cut-off events. [2024-11-09 10:49:05,247 INFO L125 PetriNetUnfolderBase]: For 12515/12515 co-relation queries the response was YES. [2024-11-09 10:49:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7222 conditions, 1063 events. 550/1063 cut-off events. For 12515/12515 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6037 event pairs, 49 based on Foata normal form. 3/1046 useless extension candidates. Maximal degree in co-relation 7130. Up to 965 conditions per place. [2024-11-09 10:49:05,257 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 264 selfloop transitions, 40 changer transitions 7/312 dead transitions. [2024-11-09 10:49:05,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 312 transitions, 4166 flow [2024-11-09 10:49:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 10:49:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-09 10:49:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 133 transitions. [2024-11-09 10:49:05,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-11-09 10:49:05,258 INFO L175 Difference]: Start difference. First operand has 262 places, 282 transitions, 3331 flow. Second operand 16 states and 133 transitions. [2024-11-09 10:49:05,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 312 transitions, 4166 flow [2024-11-09 10:49:05,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 312 transitions, 3921 flow, removed 86 selfloop flow, removed 19 redundant places. [2024-11-09 10:49:05,309 INFO L231 Difference]: Finished difference. Result has 262 places, 287 transitions, 3292 flow [2024-11-09 10:49:05,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3292, PETRI_PLACES=262, PETRI_TRANSITIONS=287} [2024-11-09 10:49:05,310 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 240 predicate places. [2024-11-09 10:49:05,310 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 287 transitions, 3292 flow [2024-11-09 10:49:05,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:05,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:05,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:05,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 10:49:05,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 10:49:05,511 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:49:05,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:05,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1832087267, now seen corresponding path program 18 times [2024-11-09 10:49:05,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492314865] [2024-11-09 10:49:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:05,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492314865] [2024-11-09 10:49:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492314865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:05,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242611960] [2024-11-09 10:49:05,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 10:49:05,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:05,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:05,750 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:05,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 10:49:05,823 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 10:49:05,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:49:05,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 10:49:05,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:05,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242611960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:06,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-09 10:49:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636251405] [2024-11-09 10:49:06,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:06,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:49:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:49:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:49:06,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:06,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 287 transitions, 3292 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:06,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:07,183 INFO L124 PetriNetUnfolderBase]: 548/1059 cut-off events. [2024-11-09 10:49:07,183 INFO L125 PetriNetUnfolderBase]: For 11477/11477 co-relation queries the response was YES. [2024-11-09 10:49:07,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 1059 events. 548/1059 cut-off events. For 11477/11477 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5987 event pairs, 47 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 6986. Up to 909 conditions per place. [2024-11-09 10:49:07,192 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 252 selfloop transitions, 59 changer transitions 7/319 dead transitions. [2024-11-09 10:49:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 319 transitions, 4138 flow [2024-11-09 10:49:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 10:49:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 10:49:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2024-11-09 10:49:07,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-11-09 10:49:07,193 INFO L175 Difference]: Start difference. First operand has 262 places, 287 transitions, 3292 flow. Second operand 18 states and 154 transitions. [2024-11-09 10:49:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 319 transitions, 4138 flow [2024-11-09 10:49:07,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 319 transitions, 3997 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-11-09 10:49:07,242 INFO L231 Difference]: Finished difference. Result has 269 places, 290 transitions, 3385 flow [2024-11-09 10:49:07,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3151, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3385, PETRI_PLACES=269, PETRI_TRANSITIONS=290} [2024-11-09 10:49:07,243 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 247 predicate places. [2024-11-09 10:49:07,243 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 290 transitions, 3385 flow [2024-11-09 10:49:07,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.777777777777778) internal successors, (104), 18 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:07,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:49:07,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:49:07,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 10:49:07,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 10:49:07,444 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:49:07,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:49:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash 47257395, now seen corresponding path program 19 times [2024-11-09 10:49:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:49:07,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294223442] [2024-11-09 10:49:07,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:49:07,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:49:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:07,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:49:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294223442] [2024-11-09 10:49:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294223442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:49:07,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734258929] [2024-11-09 10:49:07,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 10:49:07,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:49:07,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:49:07,803 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:49:07,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 10:49:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:49:07,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 10:49:07,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:49:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:08,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:49:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:49:11,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734258929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:49:11,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:49:11,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-09 10:49:11,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436596768] [2024-11-09 10:49:11,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:49:11,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 10:49:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:49:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 10:49:11,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-09 10:49:11,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-09 10:49:11,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 290 transitions, 3385 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:49:11,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:49:11,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-09 10:49:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:49:16,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:21,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:25,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:34,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:35,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:40,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:49:45,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []