./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:49:54,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:49:54,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:49:54,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:49:54,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:49:54,150 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:49:54,151 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:49:54,151 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:49:54,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:49:54,152 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:49:54,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:49:54,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:49:54,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:49:54,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:49:54,156 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:49:54,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:49:54,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:49:54,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:49:54,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:49:54,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:49:54,158 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:49:54,162 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:49:54,162 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:49:54,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:49:54,163 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:49:54,163 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:49:54,163 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:49:54,163 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:49:54,164 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:49:54,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:49:54,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:49:54,164 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:49:54,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:49:54,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:49:54,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:49:54,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:49:54,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:49:54,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:49:54,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:49:54,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:49:54,170 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:49:54,170 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:49:54,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2024-11-19 09:49:54,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:49:54,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:49:54,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:49:54,464 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:49:54,464 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:49:54,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-19 09:49:55,940 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:49:56,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:49:56,162 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-11-19 09:49:56,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01824d48b/4e0d733847b646c898a913b90177d571/FLAGdf0cf3bf5 [2024-11-19 09:49:56,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01824d48b/4e0d733847b646c898a913b90177d571 [2024-11-19 09:49:56,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:49:56,200 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:49:56,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:49:56,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:49:56,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:49:56,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bafca68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56, skipping insertion in model container [2024-11-19 09:49:56,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:49:56,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:49:56,470 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:49:56,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:49:56,509 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:49:56,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56 WrapperNode [2024-11-19 09:49:56,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:49:56,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:49:56,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:49:56,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:49:56,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,548 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 68 [2024-11-19 09:49:56,549 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:49:56,550 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:49:56,550 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:49:56,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:49:56,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,585 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 09:49:56,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,600 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:49:56,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:49:56,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:49:56,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:49:56,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (1/1) ... [2024-11-19 09:49:56,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:49:56,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:49:56,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:49:56,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:49:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:49:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:49:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:49:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:49:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:49:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:49:56,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:49:56,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:49:56,711 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:49:56,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:49:56,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:49:56,987 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:49:56,988 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:49:57,143 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:49:57,143 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:49:57,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:49:57 BoogieIcfgContainer [2024-11-19 09:49:57,144 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:49:57,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:49:57,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:49:57,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:49:57,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:49:56" (1/3) ... [2024-11-19 09:49:57,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:49:57, skipping insertion in model container [2024-11-19 09:49:57,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:49:56" (2/3) ... [2024-11-19 09:49:57,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:49:57, skipping insertion in model container [2024-11-19 09:49:57,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:49:57" (3/3) ... [2024-11-19 09:49:57,159 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-11-19 09:49:57,173 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:49:57,174 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:49:57,174 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:49:57,220 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 09:49:57,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-19 09:49:57,300 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-19 09:49:57,300 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:49:57,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-19 09:49:57,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-19 09:49:57,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-19 09:49:57,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:49:57,333 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;@38d0e237, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:49:57,334 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:49:57,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:49:57,344 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-19 09:49:57,345 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:49:57,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:57,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:57,346 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)] === [2024-11-19 09:49:57,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:57,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1299096925, now seen corresponding path program 1 times [2024-11-19 09:49:57,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:57,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613591992] [2024-11-19 09:49:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:49:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:49:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:58,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613591992] [2024-11-19 09:49:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613591992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:58,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894155478] [2024-11-19 09:49:58,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:58,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:49:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:58,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:49:58,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:49:58,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:49:58,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:58,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:58,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:49:58,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:58,365 INFO L124 PetriNetUnfolderBase]: 87/185 cut-off events. [2024-11-19 09:49:58,366 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 09:49:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 185 events. 87/185 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 656 event pairs, 12 based on Foata normal form. 3/181 useless extension candidates. Maximal degree in co-relation 312. Up to 108 conditions per place. [2024-11-19 09:49:58,372 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 30 selfloop transitions, 4 changer transitions 9/45 dead transitions. [2024-11-19 09:49:58,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 212 flow [2024-11-19 09:49:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-19 09:49:58,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-19 09:49:58,389 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 85 transitions. [2024-11-19 09:49:58,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 212 flow [2024-11-19 09:49:58,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 09:49:58,396 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 78 flow [2024-11-19 09:49:58,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2024-11-19 09:49:58,403 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2024-11-19 09:49:58,404 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 78 flow [2024-11-19 09:49:58,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:58,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:58,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:58,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:49:58,406 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)] === [2024-11-19 09:49:58,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1491299389, now seen corresponding path program 2 times [2024-11-19 09:49:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799085220] [2024-11-19 09:49:58,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:49:58,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:58,432 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:49:58,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799085220] [2024-11-19 09:49:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799085220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642799677] [2024-11-19 09:49:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:58,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:49:58,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:49:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:49:58,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:49:58,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:58,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:58,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:49:58,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:58,951 INFO L124 PetriNetUnfolderBase]: 85/178 cut-off events. [2024-11-19 09:49:58,951 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2024-11-19 09:49:58,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 178 events. 85/178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 587 event pairs, 16 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 477. Up to 110 conditions per place. [2024-11-19 09:49:58,954 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 8 changer transitions 6/45 dead transitions. [2024-11-19 09:49:58,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 254 flow [2024-11-19 09:49:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-11-19 09:49:58,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-11-19 09:49:58,958 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 78 flow. Second operand 7 states and 79 transitions. [2024-11-19 09:49:58,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 254 flow [2024-11-19 09:49:58,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 45 transitions, 235 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-19 09:49:58,963 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 128 flow [2024-11-19 09:49:58,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-11-19 09:49:58,966 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-11-19 09:49:58,966 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 128 flow [2024-11-19 09:49:58,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:58,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:58,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:58,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:49:58,967 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)] === [2024-11-19 09:49:58,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash 764365793, now seen corresponding path program 3 times [2024-11-19 09:49:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318902405] [2024-11-19 09:49:58,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:49:58,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:58,977 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 09:49:58,978 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318902405] [2024-11-19 09:49:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318902405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996690095] [2024-11-19 09:49:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:59,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:49:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:49:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:49:59,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:49:59,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 128 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:59,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:59,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:49:59,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:59,420 INFO L124 PetriNetUnfolderBase]: 90/188 cut-off events. [2024-11-19 09:49:59,421 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-11-19 09:49:59,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 188 events. 90/188 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 657 event pairs, 28 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 558. Up to 112 conditions per place. [2024-11-19 09:49:59,423 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 11 changer transitions 7/48 dead transitions. [2024-11-19 09:49:59,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 300 flow [2024-11-19 09:49:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-11-19 09:49:59,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-19 09:49:59,427 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 128 flow. Second operand 7 states and 78 transitions. [2024-11-19 09:49:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 300 flow [2024-11-19 09:49:59,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 290 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 09:49:59,433 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 183 flow [2024-11-19 09:49:59,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-19 09:49:59,434 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2024-11-19 09:49:59,434 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 183 flow [2024-11-19 09:49:59,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:59,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:59,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:59,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:49:59,436 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)] === [2024-11-19 09:49:59,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1003485859, now seen corresponding path program 4 times [2024-11-19 09:49:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962754322] [2024-11-19 09:49:59,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:49:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:59,448 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:49:59,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:49:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:49:59,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:49:59,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962754322] [2024-11-19 09:49:59,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962754322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:49:59,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:49:59,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:49:59,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505710637] [2024-11-19 09:49:59,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:49:59,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:49:59,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:49:59,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:49:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:49:59,623 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:49:59,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:59,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:49:59,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:49:59,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:49:59,811 INFO L124 PetriNetUnfolderBase]: 88/189 cut-off events. [2024-11-19 09:49:59,811 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-11-19 09:49:59,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 189 events. 88/189 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 26 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 625. Up to 114 conditions per place. [2024-11-19 09:49:59,814 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 32 selfloop transitions, 12 changer transitions 6/52 dead transitions. [2024-11-19 09:49:59,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 388 flow [2024-11-19 09:49:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:49:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:49:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-19 09:49:59,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-19 09:49:59,816 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 183 flow. Second operand 7 states and 80 transitions. [2024-11-19 09:49:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 388 flow [2024-11-19 09:49:59,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 348 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-19 09:49:59,820 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 228 flow [2024-11-19 09:49:59,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-11-19 09:49:59,821 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-19 09:49:59,821 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 228 flow [2024-11-19 09:49:59,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:49:59,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:49:59,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:49:59,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:49:59,822 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)] === [2024-11-19 09:49:59,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:49:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash 896637833, now seen corresponding path program 5 times [2024-11-19 09:49:59,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:49:59,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869797440] [2024-11-19 09:49:59,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:49:59,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:49:59,836 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:49:59,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:00,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869797440] [2024-11-19 09:50:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869797440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:50:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128448334] [2024-11-19 09:50:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:00,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:50:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:50:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:50:00,023 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:50:00,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:00,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:00,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:50:00,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:00,139 INFO L124 PetriNetUnfolderBase]: 86/183 cut-off events. [2024-11-19 09:50:00,140 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-11-19 09:50:00,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 183 events. 86/183 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 635 event pairs, 27 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 623. Up to 114 conditions per place. [2024-11-19 09:50:00,142 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 13 changer transitions 5/49 dead transitions. [2024-11-19 09:50:00,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 379 flow [2024-11-19 09:50:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:50:00,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:50:00,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-19 09:50:00,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-19 09:50:00,144 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 228 flow. Second operand 7 states and 77 transitions. [2024-11-19 09:50:00,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 379 flow [2024-11-19 09:50:00,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 360 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 09:50:00,148 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 232 flow [2024-11-19 09:50:00,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-19 09:50:00,149 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-19 09:50:00,149 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 232 flow [2024-11-19 09:50:00,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:00,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:00,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:00,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:50:00,150 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)] === [2024-11-19 09:50:00,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1142014009, now seen corresponding path program 6 times [2024-11-19 09:50:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583431209] [2024-11-19 09:50:00,152 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:00,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:00,160 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 09:50:00,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583431209] [2024-11-19 09:50:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583431209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:50:00,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:50:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:50:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195832023] [2024-11-19 09:50:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:50:00,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:50:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:50:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:50:00,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-19 09:50:00,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:00,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:00,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-19 09:50:00,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:00,512 INFO L124 PetriNetUnfolderBase]: 82/166 cut-off events. [2024-11-19 09:50:00,513 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-19 09:50:00,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 166 events. 82/166 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 521 event pairs, 26 based on Foata normal form. 1/166 useless extension candidates. Maximal degree in co-relation 580. Up to 114 conditions per place. [2024-11-19 09:50:00,515 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 23 selfloop transitions, 13 changer transitions 6/44 dead transitions. [2024-11-19 09:50:00,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 365 flow [2024-11-19 09:50:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:50:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:50:00,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-11-19 09:50:00,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-11-19 09:50:00,517 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 232 flow. Second operand 7 states and 73 transitions. [2024-11-19 09:50:00,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 365 flow [2024-11-19 09:50:00,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 324 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 09:50:00,521 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 220 flow [2024-11-19 09:50:00,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-19 09:50:00,522 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-19 09:50:00,523 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 220 flow [2024-11-19 09:50:00,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:00,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:00,523 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:00,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:50:00,524 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)] === [2024-11-19 09:50:00,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1923546344, now seen corresponding path program 1 times [2024-11-19 09:50:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:00,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242505370] [2024-11-19 09:50:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:00,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242505370] [2024-11-19 09:50:00,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242505370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303244412] [2024-11-19 09:50:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:00,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:00,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:00,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:00,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:50:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:00,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:00,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:01,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303244412] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:01,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 09:50:01,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392609559] [2024-11-19 09:50:01,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:01,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:50:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:50:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:50:01,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:01,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 220 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:01,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:01,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:01,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:02,316 INFO L124 PetriNetUnfolderBase]: 318/613 cut-off events. [2024-11-19 09:50:02,317 INFO L125 PetriNetUnfolderBase]: For 611/611 co-relation queries the response was YES. [2024-11-19 09:50:02,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 613 events. 318/613 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2650 event pairs, 14 based on Foata normal form. 17/630 useless extension candidates. Maximal degree in co-relation 1671. Up to 144 conditions per place. [2024-11-19 09:50:02,323 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 125 selfloop transitions, 63 changer transitions 8/197 dead transitions. [2024-11-19 09:50:02,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 197 transitions, 1155 flow [2024-11-19 09:50:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 09:50:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 09:50:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 328 transitions. [2024-11-19 09:50:02,327 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-11-19 09:50:02,327 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 220 flow. Second operand 34 states and 328 transitions. [2024-11-19 09:50:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 197 transitions, 1155 flow [2024-11-19 09:50:02,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 197 transitions, 1071 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-11-19 09:50:02,332 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 546 flow [2024-11-19 09:50:02,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-11-19 09:50:02,335 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-19 09:50:02,335 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 546 flow [2024-11-19 09:50:02,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:02,335 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:02,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:02,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 09:50:02,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:02,540 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)] === [2024-11-19 09:50:02,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1139730162, now seen corresponding path program 2 times [2024-11-19 09:50:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:02,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587430662] [2024-11-19 09:50:02,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:02,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:02,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:02,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587430662] [2024-11-19 09:50:02,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587430662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:02,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751088100] [2024-11-19 09:50:02,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:02,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:02,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:02,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:02,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:50:02,821 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:02,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:02,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:02,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:03,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751088100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:03,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 09:50:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310654352] [2024-11-19 09:50:03,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:50:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:50:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:50:03,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:03,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 546 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:03,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:03,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:03,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:03,994 INFO L124 PetriNetUnfolderBase]: 408/781 cut-off events. [2024-11-19 09:50:03,995 INFO L125 PetriNetUnfolderBase]: For 924/924 co-relation queries the response was YES. [2024-11-19 09:50:03,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 781 events. 408/781 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3695 event pairs, 25 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 2624. Up to 374 conditions per place. [2024-11-19 09:50:04,001 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 110 selfloop transitions, 93 changer transitions 8/212 dead transitions. [2024-11-19 09:50:04,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 212 transitions, 1503 flow [2024-11-19 09:50:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-19 09:50:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-19 09:50:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 285 transitions. [2024-11-19 09:50:04,005 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-11-19 09:50:04,005 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 546 flow. Second operand 31 states and 285 transitions. [2024-11-19 09:50:04,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 212 transitions, 1503 flow [2024-11-19 09:50:04,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 212 transitions, 1364 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-19 09:50:04,017 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 962 flow [2024-11-19 09:50:04,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=962, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-11-19 09:50:04,019 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2024-11-19 09:50:04,019 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 962 flow [2024-11-19 09:50:04,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:04,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:04,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:04,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:04,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-19 09:50:04,221 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)] === [2024-11-19 09:50:04,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -276693110, now seen corresponding path program 3 times [2024-11-19 09:50:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497364508] [2024-11-19 09:50:04,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:04,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:04,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:04,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497364508] [2024-11-19 09:50:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497364508] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934111567] [2024-11-19 09:50:04,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:04,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:04,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:04,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:04,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:50:04,464 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:04,464 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:04,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:04,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:04,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:04,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:04,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934111567] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:04,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:04,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 09:50:04,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815096074] [2024-11-19 09:50:04,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:04,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:50:04,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:04,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:50:04,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:50:04,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:04,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 962 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:04,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:04,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:04,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:06,766 INFO L124 PetriNetUnfolderBase]: 623/1198 cut-off events. [2024-11-19 09:50:06,766 INFO L125 PetriNetUnfolderBase]: For 2720/2720 co-relation queries the response was YES. [2024-11-19 09:50:06,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1198 events. 623/1198 cut-off events. For 2720/2720 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6353 event pairs, 20 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 4743. Up to 215 conditions per place. [2024-11-19 09:50:06,776 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 170 selfloop transitions, 197 changer transitions 8/376 dead transitions. [2024-11-19 09:50:06,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 376 transitions, 3027 flow [2024-11-19 09:50:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 09:50:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2024-11-19 09:50:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 535 transitions. [2024-11-19 09:50:06,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-11-19 09:50:06,780 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 962 flow. Second operand 60 states and 535 transitions. [2024-11-19 09:50:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 376 transitions, 3027 flow [2024-11-19 09:50:06,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 376 transitions, 2933 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-19 09:50:06,808 INFO L231 Difference]: Finished difference. Result has 177 places, 230 transitions, 2176 flow [2024-11-19 09:50:06,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=2176, PETRI_PLACES=177, PETRI_TRANSITIONS=230} [2024-11-19 09:50:06,811 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2024-11-19 09:50:06,811 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 230 transitions, 2176 flow [2024-11-19 09:50:06,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:06,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:06,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:06,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:07,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:07,017 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)] === [2024-11-19 09:50:07,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash -408965150, now seen corresponding path program 4 times [2024-11-19 09:50:07,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:07,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430280432] [2024-11-19 09:50:07,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:07,027 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:07,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430280432] [2024-11-19 09:50:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430280432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039051941] [2024-11-19 09:50:07,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:07,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:07,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:07,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:07,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:50:07,273 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:07,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:07,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:07,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:07,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039051941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:07,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:07,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:07,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605818195] [2024-11-19 09:50:07,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:07,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:07,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:07,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:07,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:07,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:07,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 230 transitions, 2176 flow. Second operand has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:07,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:07,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:07,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:08,979 INFO L124 PetriNetUnfolderBase]: 679/1300 cut-off events. [2024-11-19 09:50:08,980 INFO L125 PetriNetUnfolderBase]: For 10220/10220 co-relation queries the response was YES. [2024-11-19 09:50:08,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 1300 events. 679/1300 cut-off events. For 10220/10220 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7063 event pairs, 53 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 6760. Up to 280 conditions per place. [2024-11-19 09:50:08,995 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 148 selfloop transitions, 209 changer transitions 8/366 dead transitions. [2024-11-19 09:50:08,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 366 transitions, 3862 flow [2024-11-19 09:50:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 09:50:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-19 09:50:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 406 transitions. [2024-11-19 09:50:08,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38446969696969696 [2024-11-19 09:50:08,999 INFO L175 Difference]: Start difference. First operand has 177 places, 230 transitions, 2176 flow. Second operand 44 states and 406 transitions. [2024-11-19 09:50:08,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 366 transitions, 3862 flow [2024-11-19 09:50:09,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 366 transitions, 3565 flow, removed 97 selfloop flow, removed 8 redundant places. [2024-11-19 09:50:09,053 INFO L231 Difference]: Finished difference. Result has 219 places, 261 transitions, 2767 flow [2024-11-19 09:50:09,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2767, PETRI_PLACES=219, PETRI_TRANSITIONS=261} [2024-11-19 09:50:09,054 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2024-11-19 09:50:09,057 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 261 transitions, 2767 flow [2024-11-19 09:50:09,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:09,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:09,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:09,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:09,258 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)] === [2024-11-19 09:50:09,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash -524065846, now seen corresponding path program 5 times [2024-11-19 09:50:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:09,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899496195] [2024-11-19 09:50:09,259 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:09,265 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:09,266 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899496195] [2024-11-19 09:50:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899496195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67614045] [2024-11-19 09:50:09,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:09,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:09,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:09,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:50:09,460 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:09,460 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:09,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:09,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:09,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:09,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67614045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:09,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:09,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:09,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417580334] [2024-11-19 09:50:09,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:09,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:09,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:09,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:09,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:09,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 261 transitions, 2767 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:09,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:09,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:09,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:10,223 INFO L124 PetriNetUnfolderBase]: 686/1321 cut-off events. [2024-11-19 09:50:10,224 INFO L125 PetriNetUnfolderBase]: For 11138/11138 co-relation queries the response was YES. [2024-11-19 09:50:10,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 1321 events. 686/1321 cut-off events. For 11138/11138 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7241 event pairs, 62 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 7452. Up to 869 conditions per place. [2024-11-19 09:50:10,237 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 140 selfloop transitions, 153 changer transitions 8/302 dead transitions. [2024-11-19 09:50:10,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 302 transitions, 3642 flow [2024-11-19 09:50:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 09:50:10,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-19 09:50:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 144 transitions. [2024-11-19 09:50:10,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-19 09:50:10,240 INFO L175 Difference]: Start difference. First operand has 219 places, 261 transitions, 2767 flow. Second operand 16 states and 144 transitions. [2024-11-19 09:50:10,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 302 transitions, 3642 flow [2024-11-19 09:50:10,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 302 transitions, 3314 flow, removed 31 selfloop flow, removed 20 redundant places. [2024-11-19 09:50:10,326 INFO L231 Difference]: Finished difference. Result has 219 places, 269 transitions, 3078 flow [2024-11-19 09:50:10,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3078, PETRI_PLACES=219, PETRI_TRANSITIONS=269} [2024-11-19 09:50:10,327 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 193 predicate places. [2024-11-19 09:50:10,328 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 269 transitions, 3078 flow [2024-11-19 09:50:10,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:10,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:10,328 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:10,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:10,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 09:50:10,529 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)] === [2024-11-19 09:50:10,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1935746500, now seen corresponding path program 6 times [2024-11-19 09:50:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:10,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63662028] [2024-11-19 09:50:10,530 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:10,537 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:50:10,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:10,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63662028] [2024-11-19 09:50:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63662028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489465044] [2024-11-19 09:50:10,728 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:10,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:10,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:10,731 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:10,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:50:10,788 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:50:10,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:10,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:10,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:10,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:11,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489465044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:11,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:11,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-11-19 09:50:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822179569] [2024-11-19 09:50:11,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:11,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 09:50:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 09:50:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-19 09:50:11,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:11,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 269 transitions, 3078 flow. Second operand has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:11,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:11,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:11,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:12,134 INFO L124 PetriNetUnfolderBase]: 973/1864 cut-off events. [2024-11-19 09:50:12,135 INFO L125 PetriNetUnfolderBase]: For 13470/13470 co-relation queries the response was YES. [2024-11-19 09:50:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10937 conditions, 1864 events. 973/1864 cut-off events. For 13470/13470 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11193 event pairs, 77 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 10875. Up to 811 conditions per place. [2024-11-19 09:50:12,149 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 201 selfloop transitions, 270 changer transitions 8/480 dead transitions. [2024-11-19 09:50:12,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 480 transitions, 5928 flow [2024-11-19 09:50:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 09:50:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-19 09:50:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 328 transitions. [2024-11-19 09:50:12,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36936936936936937 [2024-11-19 09:50:12,151 INFO L175 Difference]: Start difference. First operand has 219 places, 269 transitions, 3078 flow. Second operand 37 states and 328 transitions. [2024-11-19 09:50:12,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 480 transitions, 5928 flow [2024-11-19 09:50:12,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 480 transitions, 5815 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-19 09:50:12,239 INFO L231 Difference]: Finished difference. Result has 263 places, 394 transitions, 5433 flow [2024-11-19 09:50:12,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5433, PETRI_PLACES=263, PETRI_TRANSITIONS=394} [2024-11-19 09:50:12,240 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 237 predicate places. [2024-11-19 09:50:12,240 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 394 transitions, 5433 flow [2024-11-19 09:50:12,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.791666666666667) internal successors, (139), 24 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:12,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:12,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:12,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:12,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:12,446 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)] === [2024-11-19 09:50:12,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1797978382, now seen corresponding path program 7 times [2024-11-19 09:50:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965753196] [2024-11-19 09:50:12,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965753196] [2024-11-19 09:50:12,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965753196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:12,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524281706] [2024-11-19 09:50:12,598 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:12,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:12,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:12,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:50:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:12,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:12,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524281706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:12,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:12,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556570953] [2024-11-19 09:50:12,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:12,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:12,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:12,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 394 transitions, 5433 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:12,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:12,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:12,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:13,510 INFO L124 PetriNetUnfolderBase]: 991/1915 cut-off events. [2024-11-19 09:50:13,510 INFO L125 PetriNetUnfolderBase]: For 18411/18411 co-relation queries the response was YES. [2024-11-19 09:50:13,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12958 conditions, 1915 events. 991/1915 cut-off events. For 18411/18411 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11690 event pairs, 80 based on Foata normal form. 2/1911 useless extension candidates. Maximal degree in co-relation 12882. Up to 1370 conditions per place. [2024-11-19 09:50:13,531 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 217 selfloop transitions, 216 changer transitions 8/442 dead transitions. [2024-11-19 09:50:13,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 442 transitions, 6711 flow [2024-11-19 09:50:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 09:50:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-19 09:50:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2024-11-19 09:50:13,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-11-19 09:50:13,533 INFO L175 Difference]: Start difference. First operand has 263 places, 394 transitions, 5433 flow. Second operand 18 states and 156 transitions. [2024-11-19 09:50:13,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 442 transitions, 6711 flow [2024-11-19 09:50:13,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 442 transitions, 6589 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-11-19 09:50:13,706 INFO L231 Difference]: Finished difference. Result has 279 places, 408 transitions, 6374 flow [2024-11-19 09:50:13,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5311, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6374, PETRI_PLACES=279, PETRI_TRANSITIONS=408} [2024-11-19 09:50:13,707 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 253 predicate places. [2024-11-19 09:50:13,708 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 408 transitions, 6374 flow [2024-11-19 09:50:13,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:13,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:13,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:13,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:50:13,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:13,909 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)] === [2024-11-19 09:50:13,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:13,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1624730690, now seen corresponding path program 8 times [2024-11-19 09:50:13,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:13,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781820354] [2024-11-19 09:50:13,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:13,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:13,915 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:13,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:14,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781820354] [2024-11-19 09:50:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781820354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252084472] [2024-11-19 09:50:14,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:14,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:14,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:14,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:50:14,115 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:14,115 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:14,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:14,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:14,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:14,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252084472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:14,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:14,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:14,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471759224] [2024-11-19 09:50:14,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:14,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:14,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:14,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 408 transitions, 6374 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:14,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:14,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:14,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:15,018 INFO L124 PetriNetUnfolderBase]: 996/1930 cut-off events. [2024-11-19 09:50:15,018 INFO L125 PetriNetUnfolderBase]: For 20127/20127 co-relation queries the response was YES. [2024-11-19 09:50:15,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13872 conditions, 1930 events. 996/1930 cut-off events. For 20127/20127 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 11842 event pairs, 76 based on Foata normal form. 2/1932 useless extension candidates. Maximal degree in co-relation 13790. Up to 1346 conditions per place. [2024-11-19 09:50:15,041 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 219 selfloop transitions, 221 changer transitions 8/449 dead transitions. [2024-11-19 09:50:15,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 449 transitions, 7554 flow [2024-11-19 09:50:15,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 09:50:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-19 09:50:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 171 transitions. [2024-11-19 09:50:15,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-11-19 09:50:15,043 INFO L175 Difference]: Start difference. First operand has 279 places, 408 transitions, 6374 flow. Second operand 20 states and 171 transitions. [2024-11-19 09:50:15,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 449 transitions, 7554 flow [2024-11-19 09:50:15,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 449 transitions, 7495 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 09:50:15,228 INFO L231 Difference]: Finished difference. Result has 295 places, 413 transitions, 7183 flow [2024-11-19 09:50:15,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6315, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7183, PETRI_PLACES=295, PETRI_TRANSITIONS=413} [2024-11-19 09:50:15,229 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 269 predicate places. [2024-11-19 09:50:15,229 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 413 transitions, 7183 flow [2024-11-19 09:50:15,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:15,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:15,229 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:15,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 09:50:15,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 09:50:15,434 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)] === [2024-11-19 09:50:15,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:15,434 INFO L85 PathProgramCache]: Analyzing trace with hash -210424260, now seen corresponding path program 9 times [2024-11-19 09:50:15,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:15,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707912639] [2024-11-19 09:50:15,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:15,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:15,441 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:15,441 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:15,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707912639] [2024-11-19 09:50:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707912639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836008040] [2024-11-19 09:50:15,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:15,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:15,609 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:15,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:50:15,656 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:15,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:15,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:15,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:15,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:16,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836008040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:16,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:16,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637603102] [2024-11-19 09:50:16,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:16,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:16,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:16,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:16,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 413 transitions, 7183 flow. Second operand has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:16,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:16,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:16,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:17,595 INFO L124 PetriNetUnfolderBase]: 1337/2586 cut-off events. [2024-11-19 09:50:17,595 INFO L125 PetriNetUnfolderBase]: For 34420/34420 co-relation queries the response was YES. [2024-11-19 09:50:17,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19795 conditions, 2586 events. 1337/2586 cut-off events. For 34420/34420 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 16995 event pairs, 65 based on Foata normal form. 3/2589 useless extension candidates. Maximal degree in co-relation 19708. Up to 1082 conditions per place. [2024-11-19 09:50:17,619 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 262 selfloop transitions, 391 changer transitions 12/666 dead transitions. [2024-11-19 09:50:17,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 666 transitions, 11680 flow [2024-11-19 09:50:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-19 09:50:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-19 09:50:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 397 transitions. [2024-11-19 09:50:17,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3759469696969697 [2024-11-19 09:50:17,622 INFO L175 Difference]: Start difference. First operand has 295 places, 413 transitions, 7183 flow. Second operand 44 states and 397 transitions. [2024-11-19 09:50:17,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 666 transitions, 11680 flow [2024-11-19 09:50:17,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 666 transitions, 11606 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-11-19 09:50:17,960 INFO L231 Difference]: Finished difference. Result has 340 places, 550 transitions, 10814 flow [2024-11-19 09:50:17,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7106, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=10814, PETRI_PLACES=340, PETRI_TRANSITIONS=550} [2024-11-19 09:50:17,962 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 314 predicate places. [2024-11-19 09:50:17,962 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 550 transitions, 10814 flow [2024-11-19 09:50:17,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.72) internal successors, (143), 25 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:17,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:17,963 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:17,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 09:50:18,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 09:50:18,164 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)] === [2024-11-19 09:50:18,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1909243592, now seen corresponding path program 10 times [2024-11-19 09:50:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:18,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144698286] [2024-11-19 09:50:18,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:18,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:18,171 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:18,171 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:18,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144698286] [2024-11-19 09:50:18,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144698286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815334173] [2024-11-19 09:50:18,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:18,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:18,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:18,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:18,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:50:18,361 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:18,362 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:18,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:18,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:18,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815334173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:18,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105437147] [2024-11-19 09:50:18,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:18,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:18,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:18,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 550 transitions, 10814 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:18,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:18,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:18,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:19,782 INFO L124 PetriNetUnfolderBase]: 1339/2596 cut-off events. [2024-11-19 09:50:19,782 INFO L125 PetriNetUnfolderBase]: For 46427/46427 co-relation queries the response was YES. [2024-11-19 09:50:19,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22448 conditions, 2596 events. 1339/2596 cut-off events. For 46427/46427 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17112 event pairs, 108 based on Foata normal form. 2/2598 useless extension candidates. Maximal degree in co-relation 22343. Up to 1777 conditions per place. [2024-11-19 09:50:19,817 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 281 selfloop transitions, 309 changer transitions 8/599 dead transitions. [2024-11-19 09:50:19,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 599 transitions, 12404 flow [2024-11-19 09:50:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 09:50:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 09:50:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 201 transitions. [2024-11-19 09:50:19,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.335 [2024-11-19 09:50:19,819 INFO L175 Difference]: Start difference. First operand has 340 places, 550 transitions, 10814 flow. Second operand 25 states and 201 transitions. [2024-11-19 09:50:19,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 599 transitions, 12404 flow [2024-11-19 09:50:20,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 599 transitions, 12046 flow, removed 69 selfloop flow, removed 26 redundant places. [2024-11-19 09:50:20,250 INFO L231 Difference]: Finished difference. Result has 341 places, 560 transitions, 11667 flow [2024-11-19 09:50:20,250 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10464, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=11667, PETRI_PLACES=341, PETRI_TRANSITIONS=560} [2024-11-19 09:50:20,251 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 315 predicate places. [2024-11-19 09:50:20,251 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 560 transitions, 11667 flow [2024-11-19 09:50:20,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:20,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:20,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:20,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:20,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 09:50:20,452 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)] === [2024-11-19 09:50:20,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 371064952, now seen corresponding path program 11 times [2024-11-19 09:50:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:20,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155385355] [2024-11-19 09:50:20,453 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:20,458 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:20,458 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:20,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155385355] [2024-11-19 09:50:20,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155385355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537855704] [2024-11-19 09:50:20,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:20,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:20,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:20,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:20,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:50:20,713 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:20,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:20,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:20,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:20,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:21,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537855704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:21,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:21,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600208891] [2024-11-19 09:50:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:21,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:21,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:21,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 560 transitions, 11667 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:23,310 INFO L124 PetriNetUnfolderBase]: 1558/3012 cut-off events. [2024-11-19 09:50:23,310 INFO L125 PetriNetUnfolderBase]: For 63191/63191 co-relation queries the response was YES. [2024-11-19 09:50:23,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27208 conditions, 3012 events. 1558/3012 cut-off events. For 63191/63191 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20332 event pairs, 81 based on Foata normal form. 4/3016 useless extension candidates. Maximal degree in co-relation 27112. Up to 1359 conditions per place. [2024-11-19 09:50:23,346 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 278 selfloop transitions, 492 changer transitions 12/783 dead transitions. [2024-11-19 09:50:23,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 783 transitions, 16508 flow [2024-11-19 09:50:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-19 09:50:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-19 09:50:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 456 transitions. [2024-11-19 09:50:23,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-11-19 09:50:23,348 INFO L175 Difference]: Start difference. First operand has 341 places, 560 transitions, 11667 flow. Second operand 52 states and 456 transitions. [2024-11-19 09:50:23,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 783 transitions, 16508 flow [2024-11-19 09:50:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 783 transitions, 16264 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-11-19 09:50:23,801 INFO L231 Difference]: Finished difference. Result has 392 places, 674 transitions, 15500 flow [2024-11-19 09:50:23,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11438, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=15500, PETRI_PLACES=392, PETRI_TRANSITIONS=674} [2024-11-19 09:50:23,802 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 366 predicate places. [2024-11-19 09:50:23,803 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 674 transitions, 15500 flow [2024-11-19 09:50:23,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:23,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:23,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:23,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:24,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 09:50:24,004 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)] === [2024-11-19 09:50:24,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2082491284, now seen corresponding path program 12 times [2024-11-19 09:50:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:24,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806110571] [2024-11-19 09:50:24,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:24,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:24,011 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:50:24,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806110571] [2024-11-19 09:50:24,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806110571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777598740] [2024-11-19 09:50:24,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:24,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:24,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:24,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:50:24,241 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:50:24,242 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:24,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:24,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:24,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777598740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:24,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946376835] [2024-11-19 09:50:24,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:24,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:24,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:24,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 674 transitions, 15500 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:24,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:24,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:24,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:25,675 INFO L124 PetriNetUnfolderBase]: 1555/3005 cut-off events. [2024-11-19 09:50:25,675 INFO L125 PetriNetUnfolderBase]: For 92532/92532 co-relation queries the response was YES. [2024-11-19 09:50:25,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30599 conditions, 3005 events. 1555/3005 cut-off events. For 92532/92532 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20180 event pairs, 98 based on Foata normal form. 1/3006 useless extension candidates. Maximal degree in co-relation 30484. Up to 2072 conditions per place. [2024-11-19 09:50:25,709 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 359 selfloop transitions, 350 changer transitions 4/714 dead transitions. [2024-11-19 09:50:25,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 714 transitions, 17255 flow [2024-11-19 09:50:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 09:50:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 09:50:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 192 transitions. [2024-11-19 09:50:25,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-19 09:50:25,711 INFO L175 Difference]: Start difference. First operand has 392 places, 674 transitions, 15500 flow. Second operand 24 states and 192 transitions. [2024-11-19 09:50:25,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 714 transitions, 17255 flow [2024-11-19 09:50:26,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 714 transitions, 16736 flow, removed 173 selfloop flow, removed 13 redundant places. [2024-11-19 09:50:26,366 INFO L231 Difference]: Finished difference. Result has 401 places, 678 transitions, 15820 flow [2024-11-19 09:50:26,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=14995, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=15820, PETRI_PLACES=401, PETRI_TRANSITIONS=678} [2024-11-19 09:50:26,367 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 375 predicate places. [2024-11-19 09:50:26,368 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 678 transitions, 15820 flow [2024-11-19 09:50:26,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:26,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:26,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:26,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:50:26,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 09:50:26,569 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)] === [2024-11-19 09:50:26,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash 777408522, now seen corresponding path program 13 times [2024-11-19 09:50:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055511975] [2024-11-19 09:50:26,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:26,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055511975] [2024-11-19 09:50:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055511975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245776191] [2024-11-19 09:50:26,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:26,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:26,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:26,706 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:26,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:50:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:26,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:26,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:26,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245776191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:27,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010504058] [2024-11-19 09:50:27,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:27,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:27,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:27,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 678 transitions, 15820 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:27,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:27,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:27,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:28,068 INFO L124 PetriNetUnfolderBase]: 1560/3022 cut-off events. [2024-11-19 09:50:28,069 INFO L125 PetriNetUnfolderBase]: For 94417/94417 co-relation queries the response was YES. [2024-11-19 09:50:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31090 conditions, 3022 events. 1560/3022 cut-off events. For 94417/94417 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 20406 event pairs, 100 based on Foata normal form. 2/3024 useless extension candidates. Maximal degree in co-relation 30976. Up to 2079 conditions per place. [2024-11-19 09:50:28,099 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 368 selfloop transitions, 338 changer transitions 8/715 dead transitions. [2024-11-19 09:50:28,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 715 transitions, 17621 flow [2024-11-19 09:50:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 09:50:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 09:50:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2024-11-19 09:50:28,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34649122807017546 [2024-11-19 09:50:28,100 INFO L175 Difference]: Start difference. First operand has 401 places, 678 transitions, 15820 flow. Second operand 19 states and 158 transitions. [2024-11-19 09:50:28,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 715 transitions, 17621 flow [2024-11-19 09:50:28,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 715 transitions, 17400 flow, removed 4 selfloop flow, removed 18 redundant places. [2024-11-19 09:50:28,577 INFO L231 Difference]: Finished difference. Result has 406 places, 682 transitions, 16895 flow [2024-11-19 09:50:28,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=15599, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16895, PETRI_PLACES=406, PETRI_TRANSITIONS=682} [2024-11-19 09:50:28,578 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 380 predicate places. [2024-11-19 09:50:28,578 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 682 transitions, 16895 flow [2024-11-19 09:50:28,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:28,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:28,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:28,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 09:50:28,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:28,779 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)] === [2024-11-19 09:50:28,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1208750604, now seen corresponding path program 14 times [2024-11-19 09:50:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098456321] [2024-11-19 09:50:28,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:28,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:28,784 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:28,785 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:28,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098456321] [2024-11-19 09:50:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098456321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:28,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551248247] [2024-11-19 09:50:28,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:50:28,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:28,946 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:28,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 09:50:28,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:50:28,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:28,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:28,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:29,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551248247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:29,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:29,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992986644] [2024-11-19 09:50:29,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:29,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:29,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:29,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 682 transitions, 16895 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:29,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:29,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:29,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:31,032 INFO L124 PetriNetUnfolderBase]: 1563/3037 cut-off events. [2024-11-19 09:50:31,032 INFO L125 PetriNetUnfolderBase]: For 109640/109640 co-relation queries the response was YES. [2024-11-19 09:50:31,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32574 conditions, 3037 events. 1563/3037 cut-off events. For 109640/109640 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 20632 event pairs, 94 based on Foata normal form. 3/3040 useless extension candidates. Maximal degree in co-relation 32455. Up to 1771 conditions per place. [2024-11-19 09:50:31,074 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 320 selfloop transitions, 425 changer transitions 12/758 dead transitions. [2024-11-19 09:50:31,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 758 transitions, 19111 flow [2024-11-19 09:50:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-19 09:50:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-19 09:50:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 324 transitions. [2024-11-19 09:50:31,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-11-19 09:50:31,076 INFO L175 Difference]: Start difference. First operand has 406 places, 682 transitions, 16895 flow. Second operand 39 states and 324 transitions. [2024-11-19 09:50:31,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 758 transitions, 19111 flow [2024-11-19 09:50:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 758 transitions, 18875 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-11-19 09:50:31,698 INFO L231 Difference]: Finished difference. Result has 439 places, 695 transitions, 18353 flow [2024-11-19 09:50:31,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16659, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18353, PETRI_PLACES=439, PETRI_TRANSITIONS=695} [2024-11-19 09:50:31,699 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 413 predicate places. [2024-11-19 09:50:31,700 INFO L471 AbstractCegarLoop]: Abstraction has has 439 places, 695 transitions, 18353 flow [2024-11-19 09:50:31,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:31,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:31,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:31,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 09:50:31,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:31,901 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)] === [2024-11-19 09:50:31,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash 509593102, now seen corresponding path program 15 times [2024-11-19 09:50:31,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:31,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952131911] [2024-11-19 09:50:31,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:31,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:31,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:31,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:32,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:32,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952131911] [2024-11-19 09:50:32,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952131911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:32,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391589940] [2024-11-19 09:50:32,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:50:32,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:32,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:32,080 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:32,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 09:50:32,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:50:32,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:32,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:50:32,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:32,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391589940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:32,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-19 09:50:32,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512409147] [2024-11-19 09:50:32,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:32,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 09:50:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 09:50:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2024-11-19 09:50:32,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 695 transitions, 18353 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:32,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:32,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:34,521 INFO L124 PetriNetUnfolderBase]: 1587/3079 cut-off events. [2024-11-19 09:50:34,521 INFO L125 PetriNetUnfolderBase]: For 131864/131864 co-relation queries the response was YES. [2024-11-19 09:50:34,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35067 conditions, 3079 events. 1587/3079 cut-off events. For 131864/131864 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 20939 event pairs, 88 based on Foata normal form. 3/3082 useless extension candidates. Maximal degree in co-relation 34953. Up to 1548 conditions per place. [2024-11-19 09:50:34,574 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 289 selfloop transitions, 498 changer transitions 15/803 dead transitions. [2024-11-19 09:50:34,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 803 transitions, 21003 flow [2024-11-19 09:50:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-19 09:50:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-11-19 09:50:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 448 transitions. [2024-11-19 09:50:34,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3393939393939394 [2024-11-19 09:50:34,577 INFO L175 Difference]: Start difference. First operand has 439 places, 695 transitions, 18353 flow. Second operand 55 states and 448 transitions. [2024-11-19 09:50:34,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 803 transitions, 21003 flow [2024-11-19 09:50:35,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 803 transitions, 20737 flow, removed 60 selfloop flow, removed 21 redundant places. [2024-11-19 09:50:35,302 INFO L231 Difference]: Finished difference. Result has 473 places, 718 transitions, 19909 flow [2024-11-19 09:50:35,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=18078, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=475, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=19909, PETRI_PLACES=473, PETRI_TRANSITIONS=718} [2024-11-19 09:50:35,303 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 447 predicate places. [2024-11-19 09:50:35,303 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 718 transitions, 19909 flow [2024-11-19 09:50:35,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:35,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:35,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:35,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:35,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:35,504 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)] === [2024-11-19 09:50:35,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:35,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2029717016, now seen corresponding path program 1 times [2024-11-19 09:50:35,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:35,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285010165] [2024-11-19 09:50:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285010165] [2024-11-19 09:50:35,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285010165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:35,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569729126] [2024-11-19 09:50:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:50:35,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:35,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:35,679 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:35,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 09:50:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:35,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:50:35,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:35,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:36,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569729126] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:36,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:36,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2024-11-19 09:50:36,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394660388] [2024-11-19 09:50:36,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:36,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 09:50:36,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 09:50:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=683, Unknown=0, NotChecked=0, Total=812 [2024-11-19 09:50:36,085 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:36,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 718 transitions, 19909 flow. Second operand has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:36,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:36,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:36,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:37,524 INFO L124 PetriNetUnfolderBase]: 1593/3084 cut-off events. [2024-11-19 09:50:37,524 INFO L125 PetriNetUnfolderBase]: For 152245/152245 co-relation queries the response was YES. [2024-11-19 09:50:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37045 conditions, 3084 events. 1593/3084 cut-off events. For 152245/152245 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20908 event pairs, 147 based on Foata normal form. 2/3086 useless extension candidates. Maximal degree in co-relation 36928. Up to 939 conditions per place. [2024-11-19 09:50:37,560 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 346 selfloop transitions, 444 changer transitions 23/814 dead transitions. [2024-11-19 09:50:37,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 814 transitions, 22509 flow [2024-11-19 09:50:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 09:50:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 09:50:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 323 transitions. [2024-11-19 09:50:37,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-11-19 09:50:37,562 INFO L175 Difference]: Start difference. First operand has 473 places, 718 transitions, 19909 flow. Second operand 34 states and 323 transitions. [2024-11-19 09:50:37,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 814 transitions, 22509 flow [2024-11-19 09:50:38,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 814 transitions, 22175 flow, removed 92 selfloop flow, removed 25 redundant places. [2024-11-19 09:50:38,300 INFO L231 Difference]: Finished difference. Result has 483 places, 717 transitions, 20525 flow [2024-11-19 09:50:38,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19587, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=440, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=20525, PETRI_PLACES=483, PETRI_TRANSITIONS=717} [2024-11-19 09:50:38,301 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 457 predicate places. [2024-11-19 09:50:38,301 INFO L471 AbstractCegarLoop]: Abstraction has has 483 places, 717 transitions, 20525 flow [2024-11-19 09:50:38,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.482758620689655) internal successors, (159), 29 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:38,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:38,301 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:38,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 09:50:38,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 09:50:38,502 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)] === [2024-11-19 09:50:38,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1059230623, now seen corresponding path program 16 times [2024-11-19 09:50:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:38,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967245366] [2024-11-19 09:50:38,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:38,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:38,509 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:38,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:38,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:38,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967245366] [2024-11-19 09:50:38,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967245366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:38,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390018035] [2024-11-19 09:50:38,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:50:38,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:38,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:38,688 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:38,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 09:50:38,738 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:50:38,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:38,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:50:38,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:39,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:39,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390018035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:39,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:39,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:50:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930275944] [2024-11-19 09:50:39,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:39,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:50:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:50:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:50:39,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:39,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 717 transitions, 20525 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:39,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:39,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:39,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:42,309 INFO L124 PetriNetUnfolderBase]: 1970/3757 cut-off events. [2024-11-19 09:50:42,309 INFO L125 PetriNetUnfolderBase]: For 208137/208137 co-relation queries the response was YES. [2024-11-19 09:50:42,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47490 conditions, 3757 events. 1970/3757 cut-off events. For 208137/208137 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 25863 event pairs, 172 based on Foata normal form. 21/3778 useless extension candidates. Maximal degree in co-relation 47367. Up to 1321 conditions per place. [2024-11-19 09:50:42,352 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 380 selfloop transitions, 670 changer transitions 12/1063 dead transitions. [2024-11-19 09:50:42,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1063 transitions, 30424 flow [2024-11-19 09:50:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-19 09:50:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2024-11-19 09:50:42,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 699 transitions. [2024-11-19 09:50:42,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3551829268292683 [2024-11-19 09:50:42,354 INFO L175 Difference]: Start difference. First operand has 483 places, 717 transitions, 20525 flow. Second operand 82 states and 699 transitions. [2024-11-19 09:50:42,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1063 transitions, 30424 flow [2024-11-19 09:50:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1063 transitions, 29005 flow, removed 57 selfloop flow, removed 34 redundant places. [2024-11-19 09:50:43,406 INFO L231 Difference]: Finished difference. Result has 545 places, 917 transitions, 27716 flow [2024-11-19 09:50:43,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19472, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=488, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=27716, PETRI_PLACES=545, PETRI_TRANSITIONS=917} [2024-11-19 09:50:43,407 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 519 predicate places. [2024-11-19 09:50:43,407 INFO L471 AbstractCegarLoop]: Abstraction has has 545 places, 917 transitions, 27716 flow [2024-11-19 09:50:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:43,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:43,408 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:43,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 09:50:43,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:43,609 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)] === [2024-11-19 09:50:43,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1191502663, now seen corresponding path program 17 times [2024-11-19 09:50:43,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:43,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544241130] [2024-11-19 09:50:43,609 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:43,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:43,616 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:50:43,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:43,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:43,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544241130] [2024-11-19 09:50:43,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544241130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:43,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619658360] [2024-11-19 09:50:43,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:50:43,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:43,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:43,796 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:43,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 09:50:43,834 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 09:50:43,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:43,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:50:43,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:44,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619658360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:44,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:50:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811218923] [2024-11-19 09:50:44,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:44,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:50:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:50:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:50:44,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:44,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 917 transitions, 27716 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:44,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:44,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:44,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:47,302 INFO L124 PetriNetUnfolderBase]: 1994/3819 cut-off events. [2024-11-19 09:50:47,302 INFO L125 PetriNetUnfolderBase]: For 289270/289270 co-relation queries the response was YES. [2024-11-19 09:50:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51822 conditions, 3819 events. 1994/3819 cut-off events. For 289270/289270 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 26415 event pairs, 216 based on Foata normal form. 3/3822 useless extension candidates. Maximal degree in co-relation 51684. Up to 1325 conditions per place. [2024-11-19 09:50:47,352 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 361 selfloop transitions, 683 changer transitions 12/1057 dead transitions. [2024-11-19 09:50:47,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1057 transitions, 31771 flow [2024-11-19 09:50:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-19 09:50:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-11-19 09:50:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 568 transitions. [2024-11-19 09:50:47,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-19 09:50:47,354 INFO L175 Difference]: Start difference. First operand has 545 places, 917 transitions, 27716 flow. Second operand 62 states and 568 transitions. [2024-11-19 09:50:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1057 transitions, 31771 flow [2024-11-19 09:50:48,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1057 transitions, 30826 flow, removed 405 selfloop flow, removed 16 redundant places. [2024-11-19 09:50:48,908 INFO L231 Difference]: Finished difference. Result has 586 places, 923 transitions, 28521 flow [2024-11-19 09:50:48,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26772, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=671, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=28521, PETRI_PLACES=586, PETRI_TRANSITIONS=923} [2024-11-19 09:50:48,910 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 560 predicate places. [2024-11-19 09:50:48,910 INFO L471 AbstractCegarLoop]: Abstraction has has 586 places, 923 transitions, 28521 flow [2024-11-19 09:50:48,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:48,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:48,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:48,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 09:50:49,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:49,111 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)] === [2024-11-19 09:50:49,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:49,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1288169333, now seen corresponding path program 18 times [2024-11-19 09:50:49,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:49,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151667118] [2024-11-19 09:50:49,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:49,118 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:50:49,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:49,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151667118] [2024-11-19 09:50:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151667118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742593441] [2024-11-19 09:50:49,288 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:50:49,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:49,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:49,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:50:49,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 09:50:49,339 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 09:50:49,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:50:49,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:50:49,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:49,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742593441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:49,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:49,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:50:49,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196759507] [2024-11-19 09:50:49,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:49,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:50:49,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:50:49,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=794, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:50:49,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:49,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 923 transitions, 28521 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:49,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:49,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:49,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:50:54,045 INFO L124 PetriNetUnfolderBase]: 2550/4871 cut-off events. [2024-11-19 09:50:54,045 INFO L125 PetriNetUnfolderBase]: For 371761/371761 co-relation queries the response was YES. [2024-11-19 09:50:54,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67893 conditions, 4871 events. 2550/4871 cut-off events. For 371761/371761 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 35112 event pairs, 118 based on Foata normal form. 7/4878 useless extension candidates. Maximal degree in co-relation 67758. Up to 1603 conditions per place. [2024-11-19 09:50:54,113 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 471 selfloop transitions, 882 changer transitions 21/1375 dead transitions. [2024-11-19 09:50:54,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 1375 transitions, 42597 flow [2024-11-19 09:50:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-19 09:50:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-19 09:50:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 824 transitions. [2024-11-19 09:50:54,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3468013468013468 [2024-11-19 09:50:54,115 INFO L175 Difference]: Start difference. First operand has 586 places, 923 transitions, 28521 flow. Second operand 99 states and 824 transitions. [2024-11-19 09:50:54,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 1375 transitions, 42597 flow [2024-11-19 09:50:56,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1375 transitions, 41859 flow, removed 40 selfloop flow, removed 29 redundant places. [2024-11-19 09:50:56,509 INFO L231 Difference]: Finished difference. Result has 680 places, 1181 transitions, 39239 flow [2024-11-19 09:50:56,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27891, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=923, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=39239, PETRI_PLACES=680, PETRI_TRANSITIONS=1181} [2024-11-19 09:50:56,510 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 654 predicate places. [2024-11-19 09:50:56,510 INFO L471 AbstractCegarLoop]: Abstraction has has 680 places, 1181 transitions, 39239 flow [2024-11-19 09:50:56,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:56,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:50:56,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:50:56,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-19 09:50:56,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:56,711 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)] === [2024-11-19 09:50:56,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:50:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2133057283, now seen corresponding path program 19 times [2024-11-19 09:50:56,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:50:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269370829] [2024-11-19 09:50:56,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:50:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:56,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:50:56,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269370829] [2024-11-19 09:50:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269370829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:50:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82750722] [2024-11-19 09:50:56,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:50:56,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:50:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:50:56,862 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) [2024-11-19 09:50:56,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 09:50:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:50:56,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:50:56,901 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:50:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:57,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:50:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:50:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82750722] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:50:57,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:50:57,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:50:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684298058] [2024-11-19 09:50:57,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:50:57,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:50:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:50:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:50:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:50:57,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:50:57,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 1181 transitions, 39239 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:50:57,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:50:57,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:50:57,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:51:00,666 INFO L124 PetriNetUnfolderBase]: 2601/4963 cut-off events. [2024-11-19 09:51:00,666 INFO L125 PetriNetUnfolderBase]: For 453303/453303 co-relation queries the response was YES. [2024-11-19 09:51:00,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74396 conditions, 4963 events. 2601/4963 cut-off events. For 453303/453303 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35823 event pairs, 198 based on Foata normal form. 3/4966 useless extension candidates. Maximal degree in co-relation 74234. Up to 2380 conditions per place. [2024-11-19 09:51:00,764 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 490 selfloop transitions, 811 changer transitions 12/1314 dead transitions. [2024-11-19 09:51:00,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 727 places, 1314 transitions, 44549 flow [2024-11-19 09:51:00,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-19 09:51:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-11-19 09:51:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 451 transitions. [2024-11-19 09:51:00,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35455974842767296 [2024-11-19 09:51:00,766 INFO L175 Difference]: Start difference. First operand has 680 places, 1181 transitions, 39239 flow. Second operand 53 states and 451 transitions. [2024-11-19 09:51:00,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 727 places, 1314 transitions, 44549 flow [2024-11-19 09:51:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 1314 transitions, 43582 flow, removed 356 selfloop flow, removed 23 redundant places. [2024-11-19 09:51:03,806 INFO L231 Difference]: Finished difference. Result has 712 places, 1209 transitions, 41458 flow [2024-11-19 09:51:03,807 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=38376, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=41458, PETRI_PLACES=712, PETRI_TRANSITIONS=1209} [2024-11-19 09:51:03,808 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 686 predicate places. [2024-11-19 09:51:03,808 INFO L471 AbstractCegarLoop]: Abstraction has has 712 places, 1209 transitions, 41458 flow [2024-11-19 09:51:03,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:03,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:51:03,808 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:51:03,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-19 09:51:04,008 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,SelfDestructingSolverStorable25 [2024-11-19 09:51:04,009 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)] === [2024-11-19 09:51:04,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:51:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash 430174373, now seen corresponding path program 20 times [2024-11-19 09:51:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:51:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736236595] [2024-11-19 09:51:04,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:51:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:51:04,015 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:51:04,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:04,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:51:04,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736236595] [2024-11-19 09:51:04,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736236595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:51:04,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851958544] [2024-11-19 09:51:04,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:51:04,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:51:04,188 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) [2024-11-19 09:51:04,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-19 09:51:04,233 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:51:04,234 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:04,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:51:04,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:51:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:04,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:51:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851958544] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:51:04,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:51:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:51:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636026017] [2024-11-19 09:51:04,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:51:04,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:51:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:51:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:51:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:51:04,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:51:04,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 1209 transitions, 41458 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:04,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:51:04,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:51:04,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:51:13,481 INFO L124 PetriNetUnfolderBase]: 4086/7794 cut-off events. [2024-11-19 09:51:13,481 INFO L125 PetriNetUnfolderBase]: For 770902/770902 co-relation queries the response was YES. [2024-11-19 09:51:13,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120573 conditions, 7794 events. 4086/7794 cut-off events. For 770902/770902 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60951 event pairs, 70 based on Foata normal form. 15/7809 useless extension candidates. Maximal degree in co-relation 120410. Up to 1871 conditions per place. [2024-11-19 09:51:13,611 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 523 selfloop transitions, 1688 changer transitions 32/2244 dead transitions. [2024-11-19 09:51:13,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 2244 transitions, 75836 flow [2024-11-19 09:51:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-11-19 09:51:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2024-11-19 09:51:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 1478 transitions. [2024-11-19 09:51:13,614 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3539272030651341 [2024-11-19 09:51:13,615 INFO L175 Difference]: Start difference. First operand has 712 places, 1209 transitions, 41458 flow. Second operand 174 states and 1478 transitions. [2024-11-19 09:51:13,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 2244 transitions, 75836 flow [2024-11-19 09:51:19,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 2244 transitions, 75275 flow, removed 58 selfloop flow, removed 24 redundant places. [2024-11-19 09:51:19,856 INFO L231 Difference]: Finished difference. Result has 906 places, 1909 transitions, 71546 flow [2024-11-19 09:51:19,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=41073, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=174, PETRI_FLOW=71546, PETRI_PLACES=906, PETRI_TRANSITIONS=1909} [2024-11-19 09:51:19,858 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 880 predicate places. [2024-11-19 09:51:19,858 INFO L471 AbstractCegarLoop]: Abstraction has has 906 places, 1909 transitions, 71546 flow [2024-11-19 09:51:19,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:19,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:51:19,858 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:51:19,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-19 09:51:20,058 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,SelfDestructingSolverStorable26 [2024-11-19 09:51:20,059 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)] === [2024-11-19 09:51:20,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:51:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 297902333, now seen corresponding path program 21 times [2024-11-19 09:51:20,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:51:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754874438] [2024-11-19 09:51:20,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:51:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:51:20,065 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:51:20,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:20,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:51:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754874438] [2024-11-19 09:51:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754874438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:51:20,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744049917] [2024-11-19 09:51:20,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:51:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:51:20,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:51:20,305 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) [2024-11-19 09:51:20,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-19 09:51:20,346 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 09:51:20,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:51:20,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 09:51:20,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:51:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:20,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:51:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:51:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744049917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:51:20,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:51:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2024-11-19 09:51:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587026366] [2024-11-19 09:51:20,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:51:20,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 09:51:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:51:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 09:51:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-11-19 09:51:20,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-19 09:51:20,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 906 places, 1909 transitions, 71546 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:51:20,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:51:20,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-19 09:51:20,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand