./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:44:08,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:44:08,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:44:08,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:44:08,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:44:08,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:44:08,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:44:08,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:44:08,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:44:08,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:44:08,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:44:08,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:44:08,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:44:08,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:44:08,369 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:44:08,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:44:08,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:44:08,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:44:08,369 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:44:08,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:44:08,370 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:44:08,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:44:08,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:44:08,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:44:08,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:44:08,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:44:08,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:44:08,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:44:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:44:08,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:44:08,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:44:08,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:44:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:44:08,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:44:08,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:44:08,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:44:08,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:44:08,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2024-11-22 21:44:08,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:44:08,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:44:08,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:44:08,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:44:08,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:44:08,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-22 21:44:09,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:44:09,979 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:44:09,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2024-11-22 21:44:09,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452ae5df0/18c26f7a2c8c47ff9bb3df5ff40176c4/FLAGbd0513dd7 [2024-11-22 21:44:10,000 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/452ae5df0/18c26f7a2c8c47ff9bb3df5ff40176c4 [2024-11-22 21:44:10,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:44:10,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:44:10,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:44:10,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:44:10,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:44:10,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3630ac00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10, skipping insertion in model container [2024-11-22 21:44:10,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:44:10,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:44:10,229 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:44:10,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:44:10,255 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:44:10,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10 WrapperNode [2024-11-22 21:44:10,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:44:10,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:44:10,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:44:10,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:44:10,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,280 INFO L138 Inliner]: procedures = 20, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 43 [2024-11-22 21:44:10,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:44:10,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:44:10,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:44:10,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:44:10,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,309 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]. [2024-11-22 21:44:10,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:44:10,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:44:10,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:44:10,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:44:10,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (1/1) ... [2024-11-22 21:44:10,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:44:10,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:10,356 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) [2024-11-22 21:44:10,358 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 [2024-11-22 21:44:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:44:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:44:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:44:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:44:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:44:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:44:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:44:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:44:10,399 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:44:10,479 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:44:10,480 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:44:10,619 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:44:10,619 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:44:10,734 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:44:10,737 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:44:10,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:44:10 BoogieIcfgContainer [2024-11-22 21:44:10,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:44:10,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:44:10,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:44:10,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:44:10,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:44:10" (1/3) ... [2024-11-22 21:44:10,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7619a38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:44:10, skipping insertion in model container [2024-11-22 21:44:10,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:44:10" (2/3) ... [2024-11-22 21:44:10,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7619a38b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:44:10, skipping insertion in model container [2024-11-22 21:44:10,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:44:10" (3/3) ... [2024-11-22 21:44:10,746 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2024-11-22 21:44:10,761 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:44:10,762 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:44:10,762 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:44:10,798 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:44:10,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 20 transitions, 54 flow [2024-11-22 21:44:10,851 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-22 21:44:10,852 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:44:10,856 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. [2024-11-22 21:44:10,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 20 transitions, 54 flow [2024-11-22 21:44:10,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 17 transitions, 46 flow [2024-11-22 21:44:10,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:44:10,878 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;@54a7a34e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:44:10,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 21:44:10,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:44:10,886 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-11-22 21:44:10,886 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:44:10,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:10,887 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:10,888 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)] === [2024-11-22 21:44:10,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:10,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1555143576, now seen corresponding path program 1 times [2024-11-22 21:44:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567501818] [2024-11-22 21:44:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:11,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:11,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567501818] [2024-11-22 21:44:11,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567501818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:44:11,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:44:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:44:11,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897571675] [2024-11-22 21:44:11,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:44:11,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:44:11,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:44:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:44:11,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:11,346 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) [2024-11-22 21:44:11,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:11,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:11,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:11,448 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2024-11-22 21:44:11,448 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 21:44:11,449 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. [2024-11-22 21:44:11,452 INFO L140 encePairwiseOnDemand]: 15/20 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2024-11-22 21:44:11,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2024-11-22 21:44:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:44:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:44:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2024-11-22 21:44:11,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-22 21:44:11,463 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 39 transitions. [2024-11-22 21:44:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2024-11-22 21:44:11,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:44:11,467 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2024-11-22 21:44:11,468 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} [2024-11-22 21:44:11,471 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2024-11-22 21:44:11,471 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2024-11-22 21:44:11,471 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) [2024-11-22 21:44:11,471 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:11,471 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:11,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:44:11,472 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)] === [2024-11-22 21:44:11,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash 546641926, now seen corresponding path program 1 times [2024-11-22 21:44:11,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393643576] [2024-11-22 21:44:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393643576] [2024-11-22 21:44:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393643576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039603279] [2024-11-22 21:44:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:11,739 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) [2024-11-22 21:44:11,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:44:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:11,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:44:11,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:11,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:12,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039603279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:12,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:12,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2024-11-22 21:44:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613643116] [2024-11-22 21:44:12,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:12,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:44:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:44:12,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:44:12,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:12,094 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) [2024-11-22 21:44:12,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:12,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:12,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:12,287 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2024-11-22 21:44:12,287 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-22 21:44:12,288 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. [2024-11-22 21:44:12,292 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2024-11-22 21:44:12,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2024-11-22 21:44:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:44:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:44:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-11-22 21:44:12,293 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-22 21:44:12,293 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 65 transitions. [2024-11-22 21:44:12,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2024-11-22 21:44:12,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:44:12,295 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2024-11-22 21:44:12,295 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} [2024-11-22 21:44:12,295 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2024-11-22 21:44:12,295 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2024-11-22 21:44:12,296 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) [2024-11-22 21:44:12,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:12,296 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:12,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:44:12,496 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 [2024-11-22 21:44:12,497 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)] === [2024-11-22 21:44:12,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1014487161, now seen corresponding path program 1 times [2024-11-22 21:44:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:12,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129847193] [2024-11-22 21:44:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129847193] [2024-11-22 21:44:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129847193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455880137] [2024-11-22 21:44:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:12,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:12,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:12,690 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) [2024-11-22 21:44:12,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:44:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:12,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:44:12,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:12,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455880137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:12,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-22 21:44:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041485331] [2024-11-22 21:44:12,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:12,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:44:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:44:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:44:12,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:12,960 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) [2024-11-22 21:44:12,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:12,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:12,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:13,070 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events. [2024-11-22 21:44:13,070 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-22 21:44:13,070 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. [2024-11-22 21:44:13,071 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions. [2024-11-22 21:44:13,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow [2024-11-22 21:44:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:44:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:44:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-11-22 21:44:13,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-11-22 21:44:13,073 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 63 transitions. [2024-11-22 21:44:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow [2024-11-22 21:44:13,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-22 21:44:13,076 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2024-11-22 21:44:13,076 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} [2024-11-22 21:44:13,077 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2024-11-22 21:44:13,077 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2024-11-22 21:44:13,077 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) [2024-11-22 21:44:13,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:13,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:13,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:13,277 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 [2024-11-22 21:44:13,278 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)] === [2024-11-22 21:44:13,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:13,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1697698596, now seen corresponding path program 2 times [2024-11-22 21:44:13,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:13,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064456244] [2024-11-22 21:44:13,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:13,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:13,289 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:13,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:13,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064456244] [2024-11-22 21:44:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064456244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932485127] [2024-11-22 21:44:13,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:13,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:13,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:13,479 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) [2024-11-22 21:44:13,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:44:13,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:13,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:13,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:44:13,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:13,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:13,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932485127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:13,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-22 21:44:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403516097] [2024-11-22 21:44:13,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:13,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:44:13,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:44:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:44:13,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:13,669 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) [2024-11-22 21:44:13,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:13,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:13,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:13,835 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events. [2024-11-22 21:44:13,836 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-11-22 21:44:13,836 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. [2024-11-22 21:44:13,837 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions. [2024-11-22 21:44:13,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow [2024-11-22 21:44:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 21:44:13,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 21:44:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-11-22 21:44:13,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-22 21:44:13,841 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 102 transitions. [2024-11-22 21:44:13,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow [2024-11-22 21:44:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-22 21:44:13,842 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow [2024-11-22 21:44:13,843 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} [2024-11-22 21:44:13,844 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2024-11-22 21:44:13,844 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow [2024-11-22 21:44:13,845 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) [2024-11-22 21:44:13,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:13,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:13,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:44:14,045 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 [2024-11-22 21:44:14,047 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)] === [2024-11-22 21:44:14,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1334400628, now seen corresponding path program 3 times [2024-11-22 21:44:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:14,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480367019] [2024-11-22 21:44:14,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:14,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:14,060 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:14,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480367019] [2024-11-22 21:44:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480367019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423672414] [2024-11-22 21:44:14,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:14,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:14,233 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) [2024-11-22 21:44:14,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:44:14,278 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:14,278 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:14,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 21:44:14,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:14,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423672414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:14,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:14,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-22 21:44:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803950966] [2024-11-22 21:44:14,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:14,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:44:14,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:44:14,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:44:14,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:14,459 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) [2024-11-22 21:44:14,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:14,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:14,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:14,595 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events. [2024-11-22 21:44:14,596 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-22 21:44:14,597 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. [2024-11-22 21:44:14,600 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions. [2024-11-22 21:44:14,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow [2024-11-22 21:44:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:44:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:44:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-11-22 21:44:14,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:44:14,601 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 80 transitions. [2024-11-22 21:44:14,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow [2024-11-22 21:44:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-11-22 21:44:14,606 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow [2024-11-22 21:44:14,606 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} [2024-11-22 21:44:14,608 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 23 predicate places. [2024-11-22 21:44:14,609 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow [2024-11-22 21:44:14,609 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) [2024-11-22 21:44:14,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:14,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:14,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:44:14,813 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 [2024-11-22 21:44:14,814 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)] === [2024-11-22 21:44:14,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:14,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1328110415, now seen corresponding path program 2 times [2024-11-22 21:44:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324305364] [2024-11-22 21:44:14,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:14,827 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:14,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:14,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324305364] [2024-11-22 21:44:14,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324305364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:14,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193080987] [2024-11-22 21:44:14,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:14,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:14,981 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) [2024-11-22 21:44:14,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:44:15,026 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:15,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:15,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:44:15,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:15,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193080987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:15,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 12 [2024-11-22 21:44:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333144810] [2024-11-22 21:44:15,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:15,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:44:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:44:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:44:15,284 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:15,284 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) [2024-11-22 21:44:15,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:15,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:15,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:15,406 INFO L124 PetriNetUnfolderBase]: 148/270 cut-off events. [2024-11-22 21:44:15,406 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-11-22 21:44:15,407 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. [2024-11-22 21:44:15,410 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-11-22 21:44:15,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 511 flow [2024-11-22 21:44:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:44:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:44:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-11-22 21:44:15,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-22 21:44:15,412 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 9 states and 87 transitions. [2024-11-22 21:44:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 511 flow [2024-11-22 21:44:15,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 461 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-22 21:44:15,419 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 310 flow [2024-11-22 21:44:15,419 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} [2024-11-22 21:44:15,419 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 31 predicate places. [2024-11-22 21:44:15,419 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 310 flow [2024-11-22 21:44:15,420 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) [2024-11-22 21:44:15,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:15,420 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:15,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:44:15,624 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 [2024-11-22 21:44:15,625 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)] === [2024-11-22 21:44:15,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:15,625 INFO L85 PathProgramCache]: Analyzing trace with hash 599699803, now seen corresponding path program 3 times [2024-11-22 21:44:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948968352] [2024-11-22 21:44:15,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:15,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:15,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:15,633 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948968352] [2024-11-22 21:44:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948968352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729679998] [2024-11-22 21:44:15,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:15,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:15,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:15,741 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) [2024-11-22 21:44:15,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:44:15,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:15,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:15,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:44:15,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:15,878 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729679998] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:44:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 13 [2024-11-22 21:44:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631946403] [2024-11-22 21:44:15,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:44:15,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:44:15,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:44:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:44:15,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:15,975 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) [2024-11-22 21:44:15,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:15,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:15,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:16,045 INFO L124 PetriNetUnfolderBase]: 162/295 cut-off events. [2024-11-22 21:44:16,048 INFO L125 PetriNetUnfolderBase]: For 479/479 co-relation queries the response was YES. [2024-11-22 21:44:16,048 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. [2024-11-22 21:44:16,050 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 48 selfloop transitions, 12 changer transitions 2/63 dead transitions. [2024-11-22 21:44:16,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 495 flow [2024-11-22 21:44:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:44:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:44:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-11-22 21:44:16,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:44:16,051 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 310 flow. Second operand 5 states and 50 transitions. [2024-11-22 21:44:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 495 flow [2024-11-22 21:44:16,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 448 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-22 21:44:16,058 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 338 flow [2024-11-22 21:44:16,058 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} [2024-11-22 21:44:16,059 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 34 predicate places. [2024-11-22 21:44:16,059 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 338 flow [2024-11-22 21:44:16,062 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) [2024-11-22 21:44:16,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:16,062 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:16,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:16,262 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 [2024-11-22 21:44:16,263 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)] === [2024-11-22 21:44:16,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash -19846395, now seen corresponding path program 1 times [2024-11-22 21:44:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838557056] [2024-11-22 21:44:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:16,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:16,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838557056] [2024-11-22 21:44:16,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838557056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:16,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221428140] [2024-11-22 21:44:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:44:16,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:16,541 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) [2024-11-22 21:44:16,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:44:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:16,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:16,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:16,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:17,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221428140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:17,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:17,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-22 21:44:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262891327] [2024-11-22 21:44:17,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:17,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:44:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:44:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:44:17,129 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:17,129 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) [2024-11-22 21:44:17,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:17,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:17,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:18,023 INFO L124 PetriNetUnfolderBase]: 232/442 cut-off events. [2024-11-22 21:44:18,023 INFO L125 PetriNetUnfolderBase]: For 737/737 co-relation queries the response was YES. [2024-11-22 21:44:18,024 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. [2024-11-22 21:44:18,026 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 76 selfloop transitions, 51 changer transitions 30/158 dead transitions. [2024-11-22 21:44:18,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 158 transitions, 1100 flow [2024-11-22 21:44:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 21:44:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 21:44:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-11-22 21:44:18,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-11-22 21:44:18,028 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 338 flow. Second operand 24 states and 223 transitions. [2024-11-22 21:44:18,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 158 transitions, 1100 flow [2024-11-22 21:44:18,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 158 transitions, 1078 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-22 21:44:18,033 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 634 flow [2024-11-22 21:44:18,033 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} [2024-11-22 21:44:18,034 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 65 predicate places. [2024-11-22 21:44:18,034 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 634 flow [2024-11-22 21:44:18,034 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) [2024-11-22 21:44:18,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:18,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:18,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:18,235 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 [2024-11-22 21:44:18,235 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)] === [2024-11-22 21:44:18,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1533874027, now seen corresponding path program 2 times [2024-11-22 21:44:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:18,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31558249] [2024-11-22 21:44:18,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:18,248 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:18,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31558249] [2024-11-22 21:44:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31558249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762915698] [2024-11-22 21:44:18,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:18,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:18,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:18,642 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) [2024-11-22 21:44:18,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:44:18,687 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:18,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:18,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:18,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:18,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:19,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762915698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:19,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:19,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-22 21:44:19,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807024223] [2024-11-22 21:44:19,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:19,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:44:19,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:19,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:44:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:44:19,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:19,271 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) [2024-11-22 21:44:19,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:19,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:20,197 INFO L124 PetriNetUnfolderBase]: 262/503 cut-off events. [2024-11-22 21:44:20,197 INFO L125 PetriNetUnfolderBase]: For 2375/2375 co-relation queries the response was YES. [2024-11-22 21:44:20,199 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. [2024-11-22 21:44:20,201 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 75 selfloop transitions, 75 changer transitions 16/167 dead transitions. [2024-11-22 21:44:20,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 167 transitions, 1535 flow [2024-11-22 21:44:20,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 21:44:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 21:44:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 223 transitions. [2024-11-22 21:44:20,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46458333333333335 [2024-11-22 21:44:20,202 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 634 flow. Second operand 24 states and 223 transitions. [2024-11-22 21:44:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 167 transitions, 1535 flow [2024-11-22 21:44:20,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 167 transitions, 1342 flow, removed 77 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:20,212 INFO L231 Difference]: Finished difference. Result has 104 places, 108 transitions, 1030 flow [2024-11-22 21:44:20,212 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=24, PETRI_FLOW=1030, PETRI_PLACES=104, PETRI_TRANSITIONS=108} [2024-11-22 21:44:20,213 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 82 predicate places. [2024-11-22 21:44:20,213 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 108 transitions, 1030 flow [2024-11-22 21:44:20,213 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) [2024-11-22 21:44:20,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:20,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:20,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 21:44:20,417 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 [2024-11-22 21:44:20,418 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)] === [2024-11-22 21:44:20,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1455225787, now seen corresponding path program 3 times [2024-11-22 21:44:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:20,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701460384] [2024-11-22 21:44:20,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:20,437 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:20,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701460384] [2024-11-22 21:44:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701460384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712501387] [2024-11-22 21:44:20,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:20,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:20,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:20,790 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) [2024-11-22 21:44:20,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:44:20,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:20,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:20,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:20,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:20,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712501387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:21,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:21,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-22 21:44:21,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193305456] [2024-11-22 21:44:21,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:21,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:44:21,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:21,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:44:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:44:21,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 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) [2024-11-22 21:44:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:21,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:22,301 INFO L124 PetriNetUnfolderBase]: 265/513 cut-off events. [2024-11-22 21:44:22,301 INFO L125 PetriNetUnfolderBase]: For 2975/2975 co-relation queries the response was YES. [2024-11-22 21:44:22,302 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 2394 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. [2024-11-22 21:44:22,304 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 83 selfloop transitions, 80 changer transitions 14/178 dead transitions. [2024-11-22 21:44:22,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 178 transitions, 1793 flow [2024-11-22 21:44:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 21:44:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 21:44:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 244 transitions. [2024-11-22 21:44:22,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-11-22 21:44:22,306 INFO L175 Difference]: Start difference. First operand has 104 places, 108 transitions, 1030 flow. Second operand 27 states and 244 transitions. [2024-11-22 21:44:22,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 178 transitions, 1793 flow [2024-11-22 21:44:22,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 178 transitions, 1428 flow, removed 164 selfloop flow, removed 11 redundant places. [2024-11-22 21:44:22,321 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1042 flow [2024-11-22 21:44:22,321 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=27, PETRI_FLOW=1042, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2024-11-22 21:44:22,323 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 98 predicate places. [2024-11-22 21:44:22,323 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1042 flow [2024-11-22 21:44:22,323 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) [2024-11-22 21:44:22,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:22,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:22,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 21:44:22,528 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 [2024-11-22 21:44:22,528 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)] === [2024-11-22 21:44:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:22,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1930971081, now seen corresponding path program 4 times [2024-11-22 21:44:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114235580] [2024-11-22 21:44:22,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:22,540 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:22,540 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114235580] [2024-11-22 21:44:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114235580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725160255] [2024-11-22 21:44:22,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:22,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:22,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:22,758 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) [2024-11-22 21:44:22,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:44:22,800 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:22,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:22,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:22,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:23,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725160255] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:35,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:35,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747257341] [2024-11-22 21:44:35,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:35,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:35,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:35,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=236, Unknown=3, NotChecked=0, Total=306 [2024-11-22 21:44:35,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:35,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 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) [2024-11-22 21:44:35,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:35,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:35,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:37,012 INFO L124 PetriNetUnfolderBase]: 320/615 cut-off events. [2024-11-22 21:44:37,013 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2024-11-22 21:44:37,014 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. [2024-11-22 21:44:37,016 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 128 selfloop transitions, 46 changer transitions 15/190 dead transitions. [2024-11-22 21:44:37,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 190 transitions, 1881 flow [2024-11-22 21:44:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:44:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:44:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 164 transitions. [2024-11-22 21:44:37,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-11-22 21:44:37,018 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1042 flow. Second operand 18 states and 164 transitions. [2024-11-22 21:44:37,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 190 transitions, 1881 flow [2024-11-22 21:44:37,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 190 transitions, 1630 flow, removed 56 selfloop flow, removed 24 redundant places. [2024-11-22 21:44:37,028 INFO L231 Difference]: Finished difference. Result has 120 places, 147 transitions, 1270 flow [2024-11-22 21:44:37,029 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} [2024-11-22 21:44:37,029 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 98 predicate places. [2024-11-22 21:44:37,029 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 147 transitions, 1270 flow [2024-11-22 21:44:37,029 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) [2024-11-22 21:44:37,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:37,029 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:37,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:37,230 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 [2024-11-22 21:44:37,230 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)] === [2024-11-22 21:44:37,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash -498701196, now seen corresponding path program 4 times [2024-11-22 21:44:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440133498] [2024-11-22 21:44:37,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:37,244 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:37,244 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:37,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440133498] [2024-11-22 21:44:37,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440133498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:37,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751300948] [2024-11-22 21:44:37,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:37,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:37,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:37,379 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) [2024-11-22 21:44:37,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 21:44:37,422 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:37,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:37,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 21:44:37,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:37,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751300948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:37,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:37,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2024-11-22 21:44:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808284750] [2024-11-22 21:44:37,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:37,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:44:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:44:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:44:37,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:37,667 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) [2024-11-22 21:44:37,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:37,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:37,940 INFO L124 PetriNetUnfolderBase]: 312/603 cut-off events. [2024-11-22 21:44:37,941 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-11-22 21:44:37,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 603 events. 312/603 cut-off events. For 1956/1956 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. [2024-11-22 21:44:37,945 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 127 selfloop transitions, 30 changer transitions 25/183 dead transitions. [2024-11-22 21:44:37,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 183 transitions, 1822 flow [2024-11-22 21:44:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:44:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:44:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-22 21:44:37,946 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-22 21:44:37,946 INFO L175 Difference]: Start difference. First operand has 120 places, 147 transitions, 1270 flow. Second operand 13 states and 122 transitions. [2024-11-22 21:44:37,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 183 transitions, 1822 flow [2024-11-22 21:44:37,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 183 transitions, 1724 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-22 21:44:37,956 INFO L231 Difference]: Finished difference. Result has 130 places, 143 transitions, 1214 flow [2024-11-22 21:44:37,957 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} [2024-11-22 21:44:37,957 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 108 predicate places. [2024-11-22 21:44:37,957 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 143 transitions, 1214 flow [2024-11-22 21:44:37,957 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) [2024-11-22 21:44:37,958 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:37,958 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:37,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 21:44:38,158 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 [2024-11-22 21:44:38,158 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)] === [2024-11-22 21:44:38,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:38,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1354805163, now seen corresponding path program 5 times [2024-11-22 21:44:38,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820283290] [2024-11-22 21:44:38,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:44:38,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:38,177 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:38,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:38,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820283290] [2024-11-22 21:44:38,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820283290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:38,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967452794] [2024-11-22 21:44:38,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:44:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:38,534 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) [2024-11-22 21:44:38,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 21:44:38,571 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:38,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:38,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:38,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:38,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:38,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967452794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:39,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:39,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-22 21:44:39,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541979810] [2024-11-22 21:44:39,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:39,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:44:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:44:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:44:39,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 143 transitions, 1214 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) [2024-11-22 21:44:39,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:39,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:40,157 INFO L124 PetriNetUnfolderBase]: 336/647 cut-off events. [2024-11-22 21:44:40,157 INFO L125 PetriNetUnfolderBase]: For 2661/2661 co-relation queries the response was YES. [2024-11-22 21:44:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 647 events. 336/647 cut-off events. For 2661/2661 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3181 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. [2024-11-22 21:44:40,161 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 135 selfloop transitions, 56 changer transitions 9/201 dead transitions. [2024-11-22 21:44:40,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 201 transitions, 2090 flow [2024-11-22 21:44:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:44:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:44:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 168 transitions. [2024-11-22 21:44:40,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-11-22 21:44:40,163 INFO L175 Difference]: Start difference. First operand has 130 places, 143 transitions, 1214 flow. Second operand 19 states and 168 transitions. [2024-11-22 21:44:40,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 201 transitions, 2090 flow [2024-11-22 21:44:40,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 201 transitions, 1971 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:40,175 INFO L231 Difference]: Finished difference. Result has 140 places, 161 transitions, 1557 flow [2024-11-22 21:44:40,176 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} [2024-11-22 21:44:40,176 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 118 predicate places. [2024-11-22 21:44:40,176 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 1557 flow [2024-11-22 21:44:40,176 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) [2024-11-22 21:44:40,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:40,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:40,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:40,377 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 [2024-11-22 21:44:40,377 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)] === [2024-11-22 21:44:40,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:40,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1271688273, now seen corresponding path program 6 times [2024-11-22 21:44:40,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:40,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112838308] [2024-11-22 21:44:40,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:44:40,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:40,387 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:44:40,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:40,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112838308] [2024-11-22 21:44:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112838308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031752648] [2024-11-22 21:44:40,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:44:40,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:40,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:40,704 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) [2024-11-22 21:44:40,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 21:44:40,741 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:44:40,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:40,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:40,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:40,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031752648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:41,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:41,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250428721] [2024-11-22 21:44:41,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:41,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:41,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:41,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:41,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:41,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 1557 flow. Second operand has 18 states, 18 states have (on average 5.777777777777778) 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) [2024-11-22 21:44:41,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:42,006 INFO L124 PetriNetUnfolderBase]: 328/631 cut-off events. [2024-11-22 21:44:42,006 INFO L125 PetriNetUnfolderBase]: For 3132/3132 co-relation queries the response was YES. [2024-11-22 21:44:42,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3442 conditions, 631 events. 328/631 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3101 event pairs, 31 based on Foata normal form. 2/619 useless extension candidates. Maximal degree in co-relation 3361. Up to 462 conditions per place. [2024-11-22 21:44:42,011 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 126 selfloop transitions, 56 changer transitions 9/192 dead transitions. [2024-11-22 21:44:42,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 192 transitions, 2087 flow [2024-11-22 21:44:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:44:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:44:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 145 transitions. [2024-11-22 21:44:42,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2024-11-22 21:44:42,012 INFO L175 Difference]: Start difference. First operand has 140 places, 161 transitions, 1557 flow. Second operand 17 states and 145 transitions. [2024-11-22 21:44:42,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 192 transitions, 2087 flow [2024-11-22 21:44:42,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 192 transitions, 1833 flow, removed 109 selfloop flow, removed 9 redundant places. [2024-11-22 21:44:42,027 INFO L231 Difference]: Finished difference. Result has 148 places, 162 transitions, 1500 flow [2024-11-22 21:44:42,027 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1500, PETRI_PLACES=148, PETRI_TRANSITIONS=162} [2024-11-22 21:44:42,027 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 126 predicate places. [2024-11-22 21:44:42,027 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 162 transitions, 1500 flow [2024-11-22 21:44:42,028 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) [2024-11-22 21:44:42,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:42,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:42,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 21:44:42,231 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 [2024-11-22 21:44:42,232 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)] === [2024-11-22 21:44:42,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1393115503, now seen corresponding path program 7 times [2024-11-22 21:44:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660847390] [2024-11-22 21:44:42,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:44:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660847390] [2024-11-22 21:44:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660847390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310979400] [2024-11-22 21:44:42,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:44:42,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:42,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:42,456 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) [2024-11-22 21:44:42,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 21:44:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:42,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:42,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:42,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310979400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:43,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:43,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:43,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337583074] [2024-11-22 21:44:43,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:43,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:43,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:43,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:43,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 162 transitions, 1500 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) [2024-11-22 21:44:43,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:43,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:43,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:43,737 INFO L124 PetriNetUnfolderBase]: 337/647 cut-off events. [2024-11-22 21:44:43,737 INFO L125 PetriNetUnfolderBase]: For 3398/3398 co-relation queries the response was YES. [2024-11-22 21:44:43,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 647 events. 337/647 cut-off events. For 3398/3398 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3161 event pairs, 33 based on Foata normal form. 4/641 useless extension candidates. Maximal degree in co-relation 3494. Up to 523 conditions per place. [2024-11-22 21:44:43,741 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 142 selfloop transitions, 42 changer transitions 10/195 dead transitions. [2024-11-22 21:44:43,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 195 transitions, 2104 flow [2024-11-22 21:44:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:44:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:44:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 130 transitions. [2024-11-22 21:44:43,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-22 21:44:43,742 INFO L175 Difference]: Start difference. First operand has 148 places, 162 transitions, 1500 flow. Second operand 15 states and 130 transitions. [2024-11-22 21:44:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 195 transitions, 2104 flow [2024-11-22 21:44:43,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 195 transitions, 1956 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:43,757 INFO L231 Difference]: Finished difference. Result has 152 places, 165 transitions, 1555 flow [2024-11-22 21:44:43,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1555, PETRI_PLACES=152, PETRI_TRANSITIONS=165} [2024-11-22 21:44:43,758 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 130 predicate places. [2024-11-22 21:44:43,758 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 165 transitions, 1555 flow [2024-11-22 21:44:43,758 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) [2024-11-22 21:44:43,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:43,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:43,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 21:44:43,962 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 [2024-11-22 21:44:43,962 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)] === [2024-11-22 21:44:43,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:43,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1211114799, now seen corresponding path program 8 times [2024-11-22 21:44:43,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:43,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141350664] [2024-11-22 21:44:43,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:43,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:43,972 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:43,972 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:44,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141350664] [2024-11-22 21:44:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141350664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106228078] [2024-11-22 21:44:44,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:44,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:44,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:44,224 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) [2024-11-22 21:44:44,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 21:44:44,280 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:44,280 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:44,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:44,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:44,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:45,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106228078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:45,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:45,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:45,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47227628] [2024-11-22 21:44:45,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:45,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:45,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:45,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:45,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:45,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:45,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 165 transitions, 1555 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) [2024-11-22 21:44:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:45,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:45,520 INFO L124 PetriNetUnfolderBase]: 374/711 cut-off events. [2024-11-22 21:44:45,520 INFO L125 PetriNetUnfolderBase]: For 4374/4374 co-relation queries the response was YES. [2024-11-22 21:44:45,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4088 conditions, 711 events. 374/711 cut-off events. For 4374/4374 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3549 event pairs, 33 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 4031. Up to 568 conditions per place. [2024-11-22 21:44:45,525 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 158 selfloop transitions, 55 changer transitions 8/222 dead transitions. [2024-11-22 21:44:45,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 222 transitions, 2556 flow [2024-11-22 21:44:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:44:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:44:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 169 transitions. [2024-11-22 21:44:45,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4225 [2024-11-22 21:44:45,528 INFO L175 Difference]: Start difference. First operand has 152 places, 165 transitions, 1555 flow. Second operand 20 states and 169 transitions. [2024-11-22 21:44:45,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 222 transitions, 2556 flow [2024-11-22 21:44:45,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 222 transitions, 2416 flow, removed 30 selfloop flow, removed 13 redundant places. [2024-11-22 21:44:45,551 INFO L231 Difference]: Finished difference. Result has 161 places, 187 transitions, 1941 flow [2024-11-22 21:44:45,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1941, PETRI_PLACES=161, PETRI_TRANSITIONS=187} [2024-11-22 21:44:45,552 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 139 predicate places. [2024-11-22 21:44:45,553 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 187 transitions, 1941 flow [2024-11-22 21:44:45,553 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) [2024-11-22 21:44:45,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:45,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:45,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:45,753 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 [2024-11-22 21:44:45,754 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)] === [2024-11-22 21:44:45,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1294231689, now seen corresponding path program 9 times [2024-11-22 21:44:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:45,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106808372] [2024-11-22 21:44:45,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:45,764 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:45,764 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:46,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106808372] [2024-11-22 21:44:46,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106808372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947967608] [2024-11-22 21:44:46,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:46,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:46,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:46,013 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) [2024-11-22 21:44:46,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 21:44:46,057 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:46,057 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:46,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:46,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:46,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947967608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:46,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-22 21:44:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265079299] [2024-11-22 21:44:46,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:46,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:44:46,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:44:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:44:46,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:46,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 187 transitions, 1941 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:46,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:46,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:46,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:47,550 INFO L124 PetriNetUnfolderBase]: 372/705 cut-off events. [2024-11-22 21:44:47,550 INFO L125 PetriNetUnfolderBase]: For 4892/4892 co-relation queries the response was YES. [2024-11-22 21:44:47,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 705 events. 372/705 cut-off events. For 4892/4892 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3519 event pairs, 33 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 3977. Up to 570 conditions per place. [2024-11-22 21:44:47,555 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 157 selfloop transitions, 54 changer transitions 7/219 dead transitions. [2024-11-22 21:44:47,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 219 transitions, 2590 flow [2024-11-22 21:44:47,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:44:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:44:47,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2024-11-22 21:44:47,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-22 21:44:47,556 INFO L175 Difference]: Start difference. First operand has 161 places, 187 transitions, 1941 flow. Second operand 18 states and 156 transitions. [2024-11-22 21:44:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 219 transitions, 2590 flow [2024-11-22 21:44:47,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 219 transitions, 2311 flow, removed 121 selfloop flow, removed 7 redundant places. [2024-11-22 21:44:47,578 INFO L231 Difference]: Finished difference. Result has 171 places, 189 transitions, 1883 flow [2024-11-22 21:44:47,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1883, PETRI_PLACES=171, PETRI_TRANSITIONS=189} [2024-11-22 21:44:47,578 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 149 predicate places. [2024-11-22 21:44:47,578 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 189 transitions, 1883 flow [2024-11-22 21:44:47,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:47,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:47,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:47,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 21:44:47,779 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 [2024-11-22 21:44:47,779 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)] === [2024-11-22 21:44:47,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash 434762513, now seen corresponding path program 10 times [2024-11-22 21:44:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:47,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356364772] [2024-11-22 21:44:47,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:47,790 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:47,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356364772] [2024-11-22 21:44:48,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356364772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:48,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505905673] [2024-11-22 21:44:48,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:48,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:48,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:48,027 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) [2024-11-22 21:44:48,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 21:44:48,067 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:48,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:48,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:48,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:48,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505905673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:48,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-22 21:44:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879695752] [2024-11-22 21:44:48,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:48,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:44:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:44:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:44:48,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:48,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 189 transitions, 1883 flow. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:48,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:48,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:49,287 INFO L124 PetriNetUnfolderBase]: 374/717 cut-off events. [2024-11-22 21:44:49,287 INFO L125 PetriNetUnfolderBase]: For 3987/3987 co-relation queries the response was YES. [2024-11-22 21:44:49,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 717 events. 374/717 cut-off events. For 3987/3987 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3607 event pairs, 35 based on Foata normal form. 3/706 useless extension candidates. Maximal degree in co-relation 3892. Up to 618 conditions per place. [2024-11-22 21:44:49,293 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 171 selfloop transitions, 42 changer transitions 7/221 dead transitions. [2024-11-22 21:44:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 221 transitions, 2495 flow [2024-11-22 21:44:49,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:44:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:44:49,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 149 transitions. [2024-11-22 21:44:49,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-11-22 21:44:49,297 INFO L175 Difference]: Start difference. First operand has 171 places, 189 transitions, 1883 flow. Second operand 18 states and 149 transitions. [2024-11-22 21:44:49,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 221 transitions, 2495 flow [2024-11-22 21:44:49,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 221 transitions, 2380 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-11-22 21:44:49,318 INFO L231 Difference]: Finished difference. Result has 182 places, 193 transitions, 1951 flow [2024-11-22 21:44:49,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1951, PETRI_PLACES=182, PETRI_TRANSITIONS=193} [2024-11-22 21:44:49,319 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 160 predicate places. [2024-11-22 21:44:49,319 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 193 transitions, 1951 flow [2024-11-22 21:44:49,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 20 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:49,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:49,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:49,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:49,519 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 [2024-11-22 21:44:49,520 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)] === [2024-11-22 21:44:49,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:49,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1832087267, now seen corresponding path program 11 times [2024-11-22 21:44:49,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:49,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362876893] [2024-11-22 21:44:49,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:44:49,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:49,527 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:49,527 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362876893] [2024-11-22 21:44:49,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362876893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010386533] [2024-11-22 21:44:49,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:44:49,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:49,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:49,770 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) [2024-11-22 21:44:49,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 21:44:49,834 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:49,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:49,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:49,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:49,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010386533] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:51,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:51,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-22 21:44:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553463983] [2024-11-22 21:44:51,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:51,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 21:44:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 21:44:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:44:51,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:51,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 193 transitions, 1951 flow. Second operand has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:51,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:51,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:51,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:52,104 INFO L124 PetriNetUnfolderBase]: 409/786 cut-off events. [2024-11-22 21:44:52,104 INFO L125 PetriNetUnfolderBase]: For 5855/5855 co-relation queries the response was YES. [2024-11-22 21:44:52,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4798 conditions, 786 events. 409/786 cut-off events. For 5855/5855 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4063 event pairs, 31 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4734. Up to 622 conditions per place. [2024-11-22 21:44:52,109 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 182 selfloop transitions, 57 changer transitions 8/248 dead transitions. [2024-11-22 21:44:52,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 248 transitions, 3053 flow [2024-11-22 21:44:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:44:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:44:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 166 transitions. [2024-11-22 21:44:52,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-11-22 21:44:52,110 INFO L175 Difference]: Start difference. First operand has 182 places, 193 transitions, 1951 flow. Second operand 19 states and 166 transitions. [2024-11-22 21:44:52,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 248 transitions, 3053 flow [2024-11-22 21:44:52,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 248 transitions, 2942 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:52,132 INFO L231 Difference]: Finished difference. Result has 194 places, 209 transitions, 2394 flow [2024-11-22 21:44:52,132 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=1846, 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=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2394, PETRI_PLACES=194, PETRI_TRANSITIONS=209} [2024-11-22 21:44:52,133 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 172 predicate places. [2024-11-22 21:44:52,133 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 209 transitions, 2394 flow [2024-11-22 21:44:52,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:52,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:52,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:52,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:52,334 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 [2024-11-22 21:44:52,334 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)] === [2024-11-22 21:44:52,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:52,335 INFO L85 PathProgramCache]: Analyzing trace with hash -733832695, now seen corresponding path program 12 times [2024-11-22 21:44:52,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071171198] [2024-11-22 21:44:52,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:44:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:52,346 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:44:52,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:52,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:52,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071171198] [2024-11-22 21:44:52,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071171198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:52,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992775036] [2024-11-22 21:44:52,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:44:52,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:52,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:52,605 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) [2024-11-22 21:44:52,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 21:44:52,638 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:44:52,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:52,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:52,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:52,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992775036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:53,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:53,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:53,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102705508] [2024-11-22 21:44:53,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:53,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:53,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:53,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 209 transitions, 2394 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) [2024-11-22 21:44:53,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:53,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:53,820 INFO L124 PetriNetUnfolderBase]: 433/829 cut-off events. [2024-11-22 21:44:53,820 INFO L125 PetriNetUnfolderBase]: For 9294/9294 co-relation queries the response was YES. [2024-11-22 21:44:53,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5508 conditions, 829 events. 433/829 cut-off events. For 9294/9294 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4333 event pairs, 35 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 5383. Up to 675 conditions per place. [2024-11-22 21:44:53,826 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 186 selfloop transitions, 55 changer transitions 8/250 dead transitions. [2024-11-22 21:44:53,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 250 transitions, 3315 flow [2024-11-22 21:44:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:44:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:44:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 152 transitions. [2024-11-22 21:44:53,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-11-22 21:44:53,828 INFO L175 Difference]: Start difference. First operand has 194 places, 209 transitions, 2394 flow. Second operand 18 states and 152 transitions. [2024-11-22 21:44:53,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 250 transitions, 3315 flow [2024-11-22 21:44:53,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 250 transitions, 2928 flow, removed 162 selfloop flow, removed 13 redundant places. [2024-11-22 21:44:53,863 INFO L231 Difference]: Finished difference. Result has 202 places, 219 transitions, 2404 flow [2024-11-22 21:44:53,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2404, PETRI_PLACES=202, PETRI_TRANSITIONS=219} [2024-11-22 21:44:53,864 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 180 predicate places. [2024-11-22 21:44:53,864 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 219 transitions, 2404 flow [2024-11-22 21:44:53,864 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) [2024-11-22 21:44:53,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:53,864 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:53,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:54,064 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 [2024-11-22 21:44:54,065 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)] === [2024-11-22 21:44:54,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1199643180, now seen corresponding path program 4 times [2024-11-22 21:44:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656472381] [2024-11-22 21:44:54,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:54,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:54,073 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:54,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656472381] [2024-11-22 21:44:54,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656472381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236757175] [2024-11-22 21:44:54,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:44:54,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:54,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:54,181 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) [2024-11-22 21:44:54,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 21:44:54,213 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:44:54,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:54,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:44:54,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:54,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:44:54,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236757175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:54,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:54,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2024-11-22 21:44:54,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992528571] [2024-11-22 21:44:54,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:54,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:44:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:44:54,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:44:54,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:54,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 219 transitions, 2404 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) [2024-11-22 21:44:54,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:54,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:54,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:54,803 INFO L124 PetriNetUnfolderBase]: 483/917 cut-off events. [2024-11-22 21:44:54,803 INFO L125 PetriNetUnfolderBase]: For 12544/12544 co-relation queries the response was YES. [2024-11-22 21:44:54,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 917 events. 483/917 cut-off events. For 12544/12544 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4928 event pairs, 32 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6096. Up to 706 conditions per place. [2024-11-22 21:44:54,814 INFO L140 encePairwiseOnDemand]: 14/20 looper letters, 208 selfloop transitions, 47 changer transitions 6/262 dead transitions. [2024-11-22 21:44:54,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 262 transitions, 3511 flow [2024-11-22 21:44:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:44:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:44:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 122 transitions. [2024-11-22 21:44:54,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-11-22 21:44:54,818 INFO L175 Difference]: Start difference. First operand has 202 places, 219 transitions, 2404 flow. Second operand 13 states and 122 transitions. [2024-11-22 21:44:54,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 262 transitions, 3511 flow [2024-11-22 21:44:54,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 262 transitions, 3315 flow, removed 74 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:54,863 INFO L231 Difference]: Finished difference. Result has 203 places, 233 transitions, 2627 flow [2024-11-22 21:44:54,863 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2627, PETRI_PLACES=203, PETRI_TRANSITIONS=233} [2024-11-22 21:44:54,863 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 181 predicate places. [2024-11-22 21:44:54,863 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 233 transitions, 2627 flow [2024-11-22 21:44:54,863 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) [2024-11-22 21:44:54,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:54,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:54,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:55,064 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 [2024-11-22 21:44:55,064 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)] === [2024-11-22 21:44:55,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1723161525, now seen corresponding path program 13 times [2024-11-22 21:44:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:55,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395902315] [2024-11-22 21:44:55,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:44:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:55,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395902315] [2024-11-22 21:44:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395902315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182137927] [2024-11-22 21:44:55,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:44:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:55,265 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) [2024-11-22 21:44:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 21:44:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:44:55,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:55,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:55,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:56,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182137927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:56,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733261737] [2024-11-22 21:44:56,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:56,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:56,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:56,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 233 transitions, 2627 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) [2024-11-22 21:44:56,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:56,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:56,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:56,574 INFO L124 PetriNetUnfolderBase]: 489/941 cut-off events. [2024-11-22 21:44:56,574 INFO L125 PetriNetUnfolderBase]: For 12343/12343 co-relation queries the response was YES. [2024-11-22 21:44:56,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 941 events. 489/941 cut-off events. For 12343/12343 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5132 event pairs, 56 based on Foata normal form. 3/932 useless extension candidates. Maximal degree in co-relation 6264. Up to 844 conditions per place. [2024-11-22 21:44:56,585 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 214 selfloop transitions, 39 changer transitions 6/260 dead transitions. [2024-11-22 21:44:56,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 260 transitions, 3352 flow [2024-11-22 21:44:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:44:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 21:44:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 132 transitions. [2024-11-22 21:44:56,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-11-22 21:44:56,586 INFO L175 Difference]: Start difference. First operand has 203 places, 233 transitions, 2627 flow. Second operand 16 states and 132 transitions. [2024-11-22 21:44:56,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 260 transitions, 3352 flow [2024-11-22 21:44:56,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 260 transitions, 3205 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-11-22 21:44:56,632 INFO L231 Difference]: Finished difference. Result has 218 places, 236 transitions, 2661 flow [2024-11-22 21:44:56,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2480, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2661, PETRI_PLACES=218, PETRI_TRANSITIONS=236} [2024-11-22 21:44:56,632 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 196 predicate places. [2024-11-22 21:44:56,632 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 236 transitions, 2661 flow [2024-11-22 21:44:56,633 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) [2024-11-22 21:44:56,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:56,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:56,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 21:44:56,836 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 [2024-11-22 21:44:56,836 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)] === [2024-11-22 21:44:56,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash -343539213, now seen corresponding path program 14 times [2024-11-22 21:44:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:56,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016528670] [2024-11-22 21:44:56,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:56,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:56,844 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:56,844 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:57,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016528670] [2024-11-22 21:44:57,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016528670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:57,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644361939] [2024-11-22 21:44:57,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:44:57,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:57,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:57,045 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) [2024-11-22 21:44:57,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 21:44:57,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:44:57,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:57,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:57,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:57,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644361939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:57,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:57,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2024-11-22 21:44:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985213041] [2024-11-22 21:44:57,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:57,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:44:57,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:44:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:44:57,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:57,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 236 transitions, 2661 flow. Second operand has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:57,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:57,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:57,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:44:58,172 INFO L124 PetriNetUnfolderBase]: 535/1036 cut-off events. [2024-11-22 21:44:58,173 INFO L125 PetriNetUnfolderBase]: For 14950/14950 co-relation queries the response was YES. [2024-11-22 21:44:58,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7166 conditions, 1036 events. 535/1036 cut-off events. For 14950/14950 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5880 event pairs, 42 based on Foata normal form. 3/1027 useless extension candidates. Maximal degree in co-relation 7034. Up to 801 conditions per place. [2024-11-22 21:44:58,180 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 217 selfloop transitions, 77 changer transitions 19/314 dead transitions. [2024-11-22 21:44:58,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 314 transitions, 4286 flow [2024-11-22 21:44:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 21:44:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-22 21:44:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 210 transitions. [2024-11-22 21:44:58,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-22 21:44:58,183 INFO L175 Difference]: Start difference. First operand has 218 places, 236 transitions, 2661 flow. Second operand 24 states and 210 transitions. [2024-11-22 21:44:58,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 314 transitions, 4286 flow [2024-11-22 21:44:58,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 314 transitions, 4135 flow, removed 46 selfloop flow, removed 12 redundant places. [2024-11-22 21:44:58,238 INFO L231 Difference]: Finished difference. Result has 235 places, 264 transitions, 3385 flow [2024-11-22 21:44:58,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3385, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2024-11-22 21:44:58,238 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 213 predicate places. [2024-11-22 21:44:58,238 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 3385 flow [2024-11-22 21:44:58,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.875) internal successors, (94), 16 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:44:58,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:44:58,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:44:58,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-22 21:44:58,439 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 [2024-11-22 21:44:58,439 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)] === [2024-11-22 21:44:58,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:44:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash -812480935, now seen corresponding path program 15 times [2024-11-22 21:44:58,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:44:58,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950778911] [2024-11-22 21:44:58,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:58,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:44:58,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:58,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:58,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:44:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950778911] [2024-11-22 21:44:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950778911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:44:58,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851585410] [2024-11-22 21:44:58,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:44:58,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:44:58,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:44:58,709 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) [2024-11-22 21:44:58,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 21:44:58,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:44:58,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:44:58,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:44:58,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:44:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:58,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:44:59,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:44:59,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851585410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:44:59,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:44:59,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:44:59,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918064784] [2024-11-22 21:44:59,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:44:59,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:44:59,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:44:59,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:44:59,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:44:59,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:44:59,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 3385 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) [2024-11-22 21:44:59,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:44:59,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:44:59,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:00,357 INFO L124 PetriNetUnfolderBase]: 522/1006 cut-off events. [2024-11-22 21:45:00,358 INFO L125 PetriNetUnfolderBase]: For 13639/13639 co-relation queries the response was YES. [2024-11-22 21:45:00,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7129 conditions, 1006 events. 522/1006 cut-off events. For 13639/13639 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5627 event pairs, 44 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 6992. Up to 849 conditions per place. [2024-11-22 21:45:00,365 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 238 selfloop transitions, 57 changer transitions 8/304 dead transitions. [2024-11-22 21:45:00,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4231 flow [2024-11-22 21:45:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-22 21:45:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-22 21:45:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 181 transitions. [2024-11-22 21:45:00,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2024-11-22 21:45:00,366 INFO L175 Difference]: Start difference. First operand has 235 places, 264 transitions, 3385 flow. Second operand 21 states and 181 transitions. [2024-11-22 21:45:00,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4231 flow [2024-11-22 21:45:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 304 transitions, 3680 flow, removed 256 selfloop flow, removed 10 redundant places. [2024-11-22 21:45:00,421 INFO L231 Difference]: Finished difference. Result has 246 places, 267 transitions, 3077 flow [2024-11-22 21:45:00,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3077, PETRI_PLACES=246, PETRI_TRANSITIONS=267} [2024-11-22 21:45:00,422 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 224 predicate places. [2024-11-22 21:45:00,422 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 267 transitions, 3077 flow [2024-11-22 21:45:00,422 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) [2024-11-22 21:45:00,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:00,422 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:00,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-22 21:45:00,623 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 [2024-11-22 21:45:00,623 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)] === [2024-11-22 21:45:00,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -361973239, now seen corresponding path program 16 times [2024-11-22 21:45:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:00,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500679921] [2024-11-22 21:45:00,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:45:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:00,629 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:45:00,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500679921] [2024-11-22 21:45:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500679921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487432038] [2024-11-22 21:45:00,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:45:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:00,823 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) [2024-11-22 21:45:00,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 21:45:00,868 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:45:00,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:00,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:45:00,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:01,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487432038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:01,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:01,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:45:01,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925228859] [2024-11-22 21:45:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:01,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:45:01,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:45:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:45:01,330 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:01,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 267 transitions, 3077 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) [2024-11-22 21:45:01,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:01,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:01,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:05,704 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 [] [2024-11-22 21:45:09,721 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 [] [2024-11-22 21:45:10,292 INFO L124 PetriNetUnfolderBase]: 521/1015 cut-off events. [2024-11-22 21:45:10,293 INFO L125 PetriNetUnfolderBase]: For 12213/12213 co-relation queries the response was YES. [2024-11-22 21:45:10,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6853 conditions, 1015 events. 521/1015 cut-off events. For 12213/12213 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5721 event pairs, 42 based on Foata normal form. 3/1000 useless extension candidates. Maximal degree in co-relation 6770. Up to 816 conditions per place. [2024-11-22 21:45:10,299 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 228 selfloop transitions, 71 changer transitions 15/315 dead transitions. [2024-11-22 21:45:10,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 315 transitions, 4085 flow [2024-11-22 21:45:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 21:45:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 21:45:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 192 transitions. [2024-11-22 21:45:10,301 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41739130434782606 [2024-11-22 21:45:10,301 INFO L175 Difference]: Start difference. First operand has 246 places, 267 transitions, 3077 flow. Second operand 23 states and 192 transitions. [2024-11-22 21:45:10,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 315 transitions, 4085 flow [2024-11-22 21:45:10,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 315 transitions, 3840 flow, removed 86 selfloop flow, removed 18 redundant places. [2024-11-22 21:45:10,360 INFO L231 Difference]: Finished difference. Result has 257 places, 272 transitions, 3141 flow [2024-11-22 21:45:10,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3141, PETRI_PLACES=257, PETRI_TRANSITIONS=272} [2024-11-22 21:45:10,361 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 235 predicate places. [2024-11-22 21:45:10,361 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 272 transitions, 3141 flow [2024-11-22 21:45:10,361 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) [2024-11-22 21:45:10,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:10,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:10,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:10,565 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 [2024-11-22 21:45:10,565 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)] === [2024-11-22 21:45:10,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash 437281723, now seen corresponding path program 17 times [2024-11-22 21:45:10,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:10,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613211302] [2024-11-22 21:45:10,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:10,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:10,573 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:10,573 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613211302] [2024-11-22 21:45:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613211302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124339518] [2024-11-22 21:45:10,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:10,851 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) [2024-11-22 21:45:10,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-22 21:45:10,885 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:10,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:10,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:45:10,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:11,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124339518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:11,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:11,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2024-11-22 21:45:11,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157273785] [2024-11-22 21:45:11,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:11,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:45:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:45:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-22 21:45:11,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:11,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 272 transitions, 3141 flow. Second operand has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:11,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:11,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:11,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:12,406 INFO L124 PetriNetUnfolderBase]: 556/1087 cut-off events. [2024-11-22 21:45:12,406 INFO L125 PetriNetUnfolderBase]: For 18531/18531 co-relation queries the response was YES. [2024-11-22 21:45:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 1087 events. 556/1087 cut-off events. For 18531/18531 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6257 event pairs, 40 based on Foata normal form. 3/1072 useless extension candidates. Maximal degree in co-relation 7669. Up to 805 conditions per place. [2024-11-22 21:45:12,414 INFO L140 encePairwiseOnDemand]: 11/20 looper letters, 225 selfloop transitions, 103 changer transitions 13/342 dead transitions. [2024-11-22 21:45:12,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 342 transitions, 4627 flow [2024-11-22 21:45:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 21:45:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-22 21:45:12,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 256 transitions. [2024-11-22 21:45:12,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-11-22 21:45:12,416 INFO L175 Difference]: Start difference. First operand has 257 places, 272 transitions, 3141 flow. Second operand 30 states and 256 transitions. [2024-11-22 21:45:12,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 342 transitions, 4627 flow [2024-11-22 21:45:12,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 342 transitions, 4438 flow, removed 67 selfloop flow, removed 14 redundant places. [2024-11-22 21:45:12,485 INFO L231 Difference]: Finished difference. Result has 272 places, 287 transitions, 3667 flow [2024-11-22 21:45:12,485 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3667, PETRI_PLACES=272, PETRI_TRANSITIONS=287} [2024-11-22 21:45:12,485 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 250 predicate places. [2024-11-22 21:45:12,485 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 287 transitions, 3667 flow [2024-11-22 21:45:12,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.75) internal successors, (115), 20 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:12,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:12,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:12,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:12,686 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 [2024-11-22 21:45:12,686 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)] === [2024-11-22 21:45:12,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 515929963, now seen corresponding path program 18 times [2024-11-22 21:45:12,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:12,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169745206] [2024-11-22 21:45:12,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:45:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:12,693 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:45:12,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:12,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169745206] [2024-11-22 21:45:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169745206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022000759] [2024-11-22 21:45:12,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:45:12,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:12,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:12,898 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) [2024-11-22 21:45:12,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-22 21:45:12,955 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:45:12,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:12,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:45:12,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:13,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022000759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:13,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-22 21:45:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236451044] [2024-11-22 21:45:13,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:13,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:45:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:45:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:45:13,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:13,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 287 transitions, 3667 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:13,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:13,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:13,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:14,168 INFO L124 PetriNetUnfolderBase]: 552/1077 cut-off events. [2024-11-22 21:45:14,168 INFO L125 PetriNetUnfolderBase]: For 19145/19145 co-relation queries the response was YES. [2024-11-22 21:45:14,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7915 conditions, 1077 events. 552/1077 cut-off events. For 19145/19145 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6176 event pairs, 39 based on Foata normal form. 3/1062 useless extension candidates. Maximal degree in co-relation 7771. Up to 809 conditions per place. [2024-11-22 21:45:14,177 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 218 selfloop transitions, 104 changer transitions 12/335 dead transitions. [2024-11-22 21:45:14,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 335 transitions, 4782 flow [2024-11-22 21:45:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:45:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:45:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 217 transitions. [2024-11-22 21:45:14,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.434 [2024-11-22 21:45:14,178 INFO L175 Difference]: Start difference. First operand has 272 places, 287 transitions, 3667 flow. Second operand 25 states and 217 transitions. [2024-11-22 21:45:14,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 335 transitions, 4782 flow [2024-11-22 21:45:14,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 335 transitions, 4190 flow, removed 260 selfloop flow, removed 14 redundant places. [2024-11-22 21:45:14,269 INFO L231 Difference]: Finished difference. Result has 281 places, 291 transitions, 3609 flow [2024-11-22 21:45:14,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3609, PETRI_PLACES=281, PETRI_TRANSITIONS=291} [2024-11-22 21:45:14,270 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 259 predicate places. [2024-11-22 21:45:14,270 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 291 transitions, 3609 flow [2024-11-22 21:45:14,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:14,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:14,270 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:14,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:14,471 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 [2024-11-22 21:45:14,471 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)] === [2024-11-22 21:45:14,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:14,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1753439027, now seen corresponding path program 19 times [2024-11-22 21:45:14,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233408790] [2024-11-22 21:45:14,472 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:45:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233408790] [2024-11-22 21:45:14,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233408790] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914060840] [2024-11-22 21:45:14,683 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:45:14,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:14,685 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) [2024-11-22 21:45:14,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-22 21:45:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:14,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-22 21:45:14,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:14,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914060840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:15,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-22 21:45:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104096101] [2024-11-22 21:45:15,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:15,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:45:15,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:45:15,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:45:15,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:15,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 291 transitions, 3609 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) [2024-11-22 21:45:15,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:15,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:15,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:16,355 INFO L124 PetriNetUnfolderBase]: 547/1056 cut-off events. [2024-11-22 21:45:16,355 INFO L125 PetriNetUnfolderBase]: For 13421/13421 co-relation queries the response was YES. [2024-11-22 21:45:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7416 conditions, 1056 events. 547/1056 cut-off events. For 13421/13421 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5953 event pairs, 43 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 7325. Up to 907 conditions per place. [2024-11-22 21:45:16,362 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 252 selfloop transitions, 59 changer transitions 8/320 dead transitions. [2024-11-22 21:45:16,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 320 transitions, 4408 flow [2024-11-22 21:45:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:45:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:45:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 143 transitions. [2024-11-22 21:45:16,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-11-22 21:45:16,363 INFO L175 Difference]: Start difference. First operand has 281 places, 291 transitions, 3609 flow. Second operand 17 states and 143 transitions. [2024-11-22 21:45:16,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 320 transitions, 4408 flow [2024-11-22 21:45:16,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 320 transitions, 4162 flow, removed 77 selfloop flow, removed 16 redundant places. [2024-11-22 21:45:16,429 INFO L231 Difference]: Finished difference. Result has 282 places, 293 transitions, 3603 flow [2024-11-22 21:45:16,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3603, PETRI_PLACES=282, PETRI_TRANSITIONS=293} [2024-11-22 21:45:16,429 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 260 predicate places. [2024-11-22 21:45:16,430 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 293 transitions, 3603 flow [2024-11-22 21:45:16,430 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) [2024-11-22 21:45:16,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:16,430 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:16,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:16,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 21:45:16,631 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:16,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash 47257395, now seen corresponding path program 20 times [2024-11-22 21:45:16,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:16,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420388099] [2024-11-22 21:45:16,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:16,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:16,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:16,641 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:16,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:16,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420388099] [2024-11-22 21:45:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420388099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:16,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606422129] [2024-11-22 21:45:16,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:16,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:16,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:16,958 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:16,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-22 21:45:17,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:17,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:17,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 21:45:17,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:17,389 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606422129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:17,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2024-11-22 21:45:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561372023] [2024-11-22 21:45:17,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:17,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-22 21:45:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-22 21:45:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:45:17,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:17,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 293 transitions, 3603 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) [2024-11-22 21:45:17,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:17,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:17,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:22,501 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 [] [2024-11-22 21:45:27,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:45:31,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:45:35,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:45:39,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:45:40,433 INFO L124 PetriNetUnfolderBase]: 653/1247 cut-off events. [2024-11-22 21:45:40,434 INFO L125 PetriNetUnfolderBase]: For 23805/23805 co-relation queries the response was YES. [2024-11-22 21:45:40,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9574 conditions, 1247 events. 653/1247 cut-off events. For 23805/23805 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7286 event pairs, 31 based on Foata normal form. 4/1233 useless extension candidates. Maximal degree in co-relation 9414. Up to 854 conditions per place. [2024-11-22 21:45:40,443 INFO L140 encePairwiseOnDemand]: 12/20 looper letters, 272 selfloop transitions, 109 changer transitions 22/404 dead transitions. [2024-11-22 21:45:40,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 404 transitions, 5757 flow [2024-11-22 21:45:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-22 21:45:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-22 21:45:40,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 287 transitions. [2024-11-22 21:45:40,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4484375 [2024-11-22 21:45:40,445 INFO L175 Difference]: Start difference. First operand has 282 places, 293 transitions, 3603 flow. Second operand 32 states and 287 transitions. [2024-11-22 21:45:40,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 404 transitions, 5757 flow [2024-11-22 21:45:40,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 404 transitions, 5586 flow, removed 43 selfloop flow, removed 13 redundant places. [2024-11-22 21:45:40,564 INFO L231 Difference]: Finished difference. Result has 308 places, 329 transitions, 4588 flow [2024-11-22 21:45:40,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=20, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4588, PETRI_PLACES=308, PETRI_TRANSITIONS=329} [2024-11-22 21:45:40,565 INFO L277 CegarLoopForPetriNet]: 22 programPoint places, 286 predicate places. [2024-11-22 21:45:40,565 INFO L471 AbstractCegarLoop]: Abstraction has has 308 places, 329 transitions, 4588 flow [2024-11-22 21:45:40,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:40,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:40,565 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:40,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:40,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 21:45:40,769 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:40,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2141532956, now seen corresponding path program 5 times [2024-11-22 21:45:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:40,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459631184] [2024-11-22 21:45:40,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:40,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:40,781 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:40,781 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:40,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459631184] [2024-11-22 21:45:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459631184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713744844] [2024-11-22 21:45:40,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:40,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:40,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:40,891 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:40,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-22 21:45:40,930 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:40,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:40,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 21:45:40,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:41,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713744844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:41,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2024-11-22 21:45:41,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565584711] [2024-11-22 21:45:41,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:41,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:45:41,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:45:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:45:41,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 20 [2024-11-22 21:45:41,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 329 transitions, 4588 flow. Second operand has 15 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:41,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:41,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 20 [2024-11-22 21:45:41,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:41,953 INFO L124 PetriNetUnfolderBase]: 644/1240 cut-off events. [2024-11-22 21:45:41,953 INFO L125 PetriNetUnfolderBase]: For 24635/24635 co-relation queries the response was YES. [2024-11-22 21:45:41,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9927 conditions, 1240 events. 644/1240 cut-off events. For 24635/24635 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7259 event pairs, 29 based on Foata normal form. 5/1227 useless extension candidates. Maximal degree in co-relation 9817. Up to 974 conditions per place. [2024-11-22 21:45:41,963 INFO L140 encePairwiseOnDemand]: 13/20 looper letters, 283 selfloop transitions, 72 changer transitions 22/378 dead transitions. [2024-11-22 21:45:41,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 378 transitions, 6008 flow [2024-11-22 21:45:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:45:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:45:41,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 170 transitions. [2024-11-22 21:45:41,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-11-22 21:45:41,964 INFO L175 Difference]: Start difference. First operand has 308 places, 329 transitions, 4588 flow. Second operand 19 states and 170 transitions. [2024-11-22 21:45:41,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 378 transitions, 6008 flow