./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-misc-2.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 c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:45:19,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:45:19,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:45:19,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:45:19,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:45:19,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:45:19,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:45:19,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:45:19,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:45:19,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:45:19,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:45:19,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:45:19,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:45:19,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:45:19,777 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:45:19,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:45:19,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:45:19,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:45:19,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:45:19,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:45:19,781 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:45:19,781 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:45:19,781 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:45:19,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:45:19,782 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:45:19,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:45:19,782 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:45:19,782 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:45:19,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:45:19,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:45:19,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:45:19,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:45:19,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:45:19,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:45:19,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:45:19,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:45:19,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:45:19,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:45:19,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:45:19,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:45:19,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:45:19,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:45:19,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-22 21:45:19,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:45:20,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:45:20,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:45:20,007 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:45:20,008 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:45:20,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-22 21:45:21,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:45:21,520 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:45:21,529 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-22 21:45:21,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a78b3da/2b877c1994594c5fa95cbc60127fae61/FLAG9c5a693cb [2024-11-22 21:45:21,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30a78b3da/2b877c1994594c5fa95cbc60127fae61 [2024-11-22 21:45:21,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:45:21,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:45:21,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:45:21,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:45:21,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:45:21,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:45:21" (1/1) ... [2024-11-22 21:45:21,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b21177c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:21, skipping insertion in model container [2024-11-22 21:45:21,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:45:21" (1/1) ... [2024-11-22 21:45:21,944 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:45:22,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:45:22,093 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:45:22,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:45:22,128 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:45:22,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22 WrapperNode [2024-11-22 21:45:22,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:45:22,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:45:22,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:45:22,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:45:22,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,142 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,158 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-22 21:45:22,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:45:22,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:45:22,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:45:22,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:45:22,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,172 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,194 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 21:45:22,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:45:22,212 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:45:22,212 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:45:22,212 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:45:22,213 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (1/1) ... [2024-11-22 21:45:22,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:45:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:22,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:45:22,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:45:22,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:45:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:45:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:45:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:45:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:45:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:45:22,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:45:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:45:22,296 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:45:22,398 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:45:22,400 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:45:22,568 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:45:22,568 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:45:22,674 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:45:22,674 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:45:22,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:45:22 BoogieIcfgContainer [2024-11-22 21:45:22,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:45:22,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:45:22,677 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:45:22,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:45:22,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:45:21" (1/3) ... [2024-11-22 21:45:22,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cab385a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:45:22, skipping insertion in model container [2024-11-22 21:45:22,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:45:22" (2/3) ... [2024-11-22 21:45:22,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cab385a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:45:22, skipping insertion in model container [2024-11-22 21:45:22,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:45:22" (3/3) ... [2024-11-22 21:45:22,681 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-22 21:45:22,693 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:45:22,694 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:45:22,694 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:45:22,727 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:45:22,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 82 flow [2024-11-22 21:45:22,777 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-11-22 21:45:22,777 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:45:22,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 4/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 56 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-22 21:45:22,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 82 flow [2024-11-22 21:45:22,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 74 flow [2024-11-22 21:45:22,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:45:22,812 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;@603eb4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:45:22,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 21:45:22,821 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:45:22,821 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-22 21:45:22,821 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:45:22,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:22,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:22,822 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:22,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:22,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1272023409, now seen corresponding path program 1 times [2024-11-22 21:45:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:22,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320951211] [2024-11-22 21:45:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:23,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:23,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:23,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320951211] [2024-11-22 21:45:23,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320951211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:23,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:23,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:45:23,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240117844] [2024-11-22 21:45:23,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:23,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:45:23,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:45:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:45:23,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:23,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:23,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:23,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:23,242 INFO L124 PetriNetUnfolderBase]: 146/286 cut-off events. [2024-11-22 21:45:23,242 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-22 21:45:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 146/286 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1116 event pairs, 12 based on Foata normal form. 2/258 useless extension candidates. Maximal degree in co-relation 458. Up to 186 conditions per place. [2024-11-22 21:45:23,247 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 21 selfloop transitions, 7 changer transitions 1/40 dead transitions. [2024-11-22 21:45:23,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 159 flow [2024-11-22 21:45:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:45:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:45:23,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-22 21:45:23,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-22 21:45:23,262 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-11-22 21:45:23,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 159 flow [2024-11-22 21:45:23,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 145 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:45:23,267 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 101 flow [2024-11-22 21:45:23,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2024-11-22 21:45:23,271 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2024-11-22 21:45:23,271 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 101 flow [2024-11-22 21:45:23,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:23,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:45:23,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:23,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 886991089, now seen corresponding path program 1 times [2024-11-22 21:45:23,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:23,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679611909] [2024-11-22 21:45:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:23,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679611909] [2024-11-22 21:45:23,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679611909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:23,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:23,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:23,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220120141] [2024-11-22 21:45:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:23,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:23,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:23,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:23,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:23,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:23,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:23,547 INFO L124 PetriNetUnfolderBase]: 191/376 cut-off events. [2024-11-22 21:45:23,547 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-22 21:45:23,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 376 events. 191/376 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1705 event pairs, 20 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 276. Up to 143 conditions per place. [2024-11-22 21:45:23,552 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 36 selfloop transitions, 10 changer transitions 5/65 dead transitions. [2024-11-22 21:45:23,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 65 transitions, 290 flow [2024-11-22 21:45:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-22 21:45:23,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2024-11-22 21:45:23,556 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 101 flow. Second operand 5 states and 123 transitions. [2024-11-22 21:45:23,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 65 transitions, 290 flow [2024-11-22 21:45:23,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 65 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:23,559 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 155 flow [2024-11-22 21:45:23,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2024-11-22 21:45:23,559 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-11-22 21:45:23,560 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 155 flow [2024-11-22 21:45:23,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:23,560 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:23,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:45:23,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:23,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:23,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1876960269, now seen corresponding path program 2 times [2024-11-22 21:45:23,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:23,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161287573] [2024-11-22 21:45:23,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:23,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:23,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:23,588 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161287573] [2024-11-22 21:45:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161287573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:23,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:23,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744252090] [2024-11-22 21:45:23,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:23,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:23,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:23,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:23,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:23,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:23,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:23,836 INFO L124 PetriNetUnfolderBase]: 185/391 cut-off events. [2024-11-22 21:45:23,837 INFO L125 PetriNetUnfolderBase]: For 233/237 co-relation queries the response was YES. [2024-11-22 21:45:23,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 391 events. 185/391 cut-off events. For 233/237 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1844 event pairs, 12 based on Foata normal form. 12/373 useless extension candidates. Maximal degree in co-relation 345. Up to 88 conditions per place. [2024-11-22 21:45:23,841 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 12 changer transitions 4/65 dead transitions. [2024-11-22 21:45:23,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 348 flow [2024-11-22 21:45:23,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:23,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 21:45:23,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-11-22 21:45:23,844 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 155 flow. Second operand 5 states and 120 transitions. [2024-11-22 21:45:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 348 flow [2024-11-22 21:45:23,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:23,847 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 241 flow [2024-11-22 21:45:23,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2024-11-22 21:45:23,850 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2024-11-22 21:45:23,850 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 241 flow [2024-11-22 21:45:23,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:23,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:23,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:45:23,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:23,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:23,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1246876582, now seen corresponding path program 1 times [2024-11-22 21:45:23,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:23,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503839928] [2024-11-22 21:45:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:23,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503839928] [2024-11-22 21:45:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503839928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:23,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661713963] [2024-11-22 21:45:23,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:23,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:23,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:23,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:23,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:23,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:23,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:23,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:23,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:24,037 INFO L124 PetriNetUnfolderBase]: 182/379 cut-off events. [2024-11-22 21:45:24,038 INFO L125 PetriNetUnfolderBase]: For 590/593 co-relation queries the response was YES. [2024-11-22 21:45:24,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 379 events. 182/379 cut-off events. For 590/593 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1803 event pairs, 17 based on Foata normal form. 4/350 useless extension candidates. Maximal degree in co-relation 572. Up to 163 conditions per place. [2024-11-22 21:45:24,040 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 41 selfloop transitions, 9 changer transitions 2/66 dead transitions. [2024-11-22 21:45:24,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 436 flow [2024-11-22 21:45:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-22 21:45:24,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6882352941176471 [2024-11-22 21:45:24,041 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 241 flow. Second operand 5 states and 117 transitions. [2024-11-22 21:45:24,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 436 flow [2024-11-22 21:45:24,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 432 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:24,045 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 292 flow [2024-11-22 21:45:24,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-22 21:45:24,046 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2024-11-22 21:45:24,046 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 292 flow [2024-11-22 21:45:24,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:24,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:24,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:24,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:45:24,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:24,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash -565039444, now seen corresponding path program 2 times [2024-11-22 21:45:24,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:24,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044451470] [2024-11-22 21:45:24,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:24,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:24,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044451470] [2024-11-22 21:45:24,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044451470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188227075] [2024-11-22 21:45:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:24,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:24,113 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:24,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:24,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:24,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:24,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:24,193 INFO L124 PetriNetUnfolderBase]: 168/379 cut-off events. [2024-11-22 21:45:24,193 INFO L125 PetriNetUnfolderBase]: For 801/805 co-relation queries the response was YES. [2024-11-22 21:45:24,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 379 events. 168/379 cut-off events. For 801/805 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1704 event pairs, 6 based on Foata normal form. 21/366 useless extension candidates. Maximal degree in co-relation 751. Up to 99 conditions per place. [2024-11-22 21:45:24,196 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 43 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-11-22 21:45:24,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 512 flow [2024-11-22 21:45:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-22 21:45:24,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-11-22 21:45:24,197 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 292 flow. Second operand 5 states and 118 transitions. [2024-11-22 21:45:24,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 512 flow [2024-11-22 21:45:24,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 496 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:24,201 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 355 flow [2024-11-22 21:45:24,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-22 21:45:24,206 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2024-11-22 21:45:24,206 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 355 flow [2024-11-22 21:45:24,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:24,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:24,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:24,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:45:24,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:24,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1009803054, now seen corresponding path program 1 times [2024-11-22 21:45:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:24,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915860771] [2024-11-22 21:45:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:24,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915860771] [2024-11-22 21:45:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915860771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484565622] [2024-11-22 21:45:24,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:24,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:24,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:24,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:45:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:24,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 21:45:24,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:24,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484565622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:24,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:24,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-22 21:45:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260711155] [2024-11-22 21:45:24,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:24,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:45:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:45:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:45:24,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 34 [2024-11-22 21:45:24,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 355 flow. Second operand has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:24,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:24,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 34 [2024-11-22 21:45:24,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:25,336 INFO L124 PetriNetUnfolderBase]: 459/907 cut-off events. [2024-11-22 21:45:25,336 INFO L125 PetriNetUnfolderBase]: For 2611/2611 co-relation queries the response was YES. [2024-11-22 21:45:25,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3200 conditions, 907 events. 459/907 cut-off events. For 2611/2611 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4461 event pairs, 4 based on Foata normal form. 46/884 useless extension candidates. Maximal degree in co-relation 1278. Up to 254 conditions per place. [2024-11-22 21:45:25,344 INFO L140 encePairwiseOnDemand]: 21/34 looper letters, 105 selfloop transitions, 51 changer transitions 0/165 dead transitions. [2024-11-22 21:45:25,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 165 transitions, 1356 flow [2024-11-22 21:45:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:45:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:45:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 374 transitions. [2024-11-22 21:45:25,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5789473684210527 [2024-11-22 21:45:25,346 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 355 flow. Second operand 19 states and 374 transitions. [2024-11-22 21:45:25,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 165 transitions, 1356 flow [2024-11-22 21:45:25,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 165 transitions, 1317 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:25,352 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 848 flow [2024-11-22 21:45:25,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=848, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-11-22 21:45:25,353 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2024-11-22 21:45:25,353 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 848 flow [2024-11-22 21:45:25,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:25,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:25,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:25,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:45:25,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:45:25,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:25,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash 971635335, now seen corresponding path program 2 times [2024-11-22 21:45:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:25,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643539078] [2024-11-22 21:45:25,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:25,568 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:25,568 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:45:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643539078] [2024-11-22 21:45:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643539078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:25,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604402398] [2024-11-22 21:45:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:25,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:25,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:25,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 848 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:25,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:25,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:25,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:25,824 INFO L124 PetriNetUnfolderBase]: 882/1760 cut-off events. [2024-11-22 21:45:25,825 INFO L125 PetriNetUnfolderBase]: For 8974/9002 co-relation queries the response was YES. [2024-11-22 21:45:25,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 1760 events. 882/1760 cut-off events. For 8974/9002 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11287 event pairs, 205 based on Foata normal form. 6/1542 useless extension candidates. Maximal degree in co-relation 6507. Up to 534 conditions per place. [2024-11-22 21:45:25,835 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 98 selfloop transitions, 32 changer transitions 0/162 dead transitions. [2024-11-22 21:45:25,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 162 transitions, 2001 flow [2024-11-22 21:45:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-22 21:45:25,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7426470588235294 [2024-11-22 21:45:25,836 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 848 flow. Second operand 4 states and 101 transitions. [2024-11-22 21:45:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 162 transitions, 2001 flow [2024-11-22 21:45:25,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 162 transitions, 1866 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-11-22 21:45:25,856 INFO L231 Difference]: Finished difference. Result has 86 places, 113 transitions, 1292 flow [2024-11-22 21:45:25,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1292, PETRI_PLACES=86, PETRI_TRANSITIONS=113} [2024-11-22 21:45:25,856 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2024-11-22 21:45:25,857 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 113 transitions, 1292 flow [2024-11-22 21:45:25,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:25,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:25,857 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:25,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:45:25,857 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:25,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash -208758639, now seen corresponding path program 1 times [2024-11-22 21:45:25,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:25,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980378685] [2024-11-22 21:45:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:25,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:25,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980378685] [2024-11-22 21:45:25,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980378685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:25,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:25,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:25,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383201047] [2024-11-22 21:45:25,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:25,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:25,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:25,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:25,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:25,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 113 transitions, 1292 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:25,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:25,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:25,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:26,278 INFO L124 PetriNetUnfolderBase]: 1239/2873 cut-off events. [2024-11-22 21:45:26,278 INFO L125 PetriNetUnfolderBase]: For 22429/22767 co-relation queries the response was YES. [2024-11-22 21:45:26,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13625 conditions, 2873 events. 1239/2873 cut-off events. For 22429/22767 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22292 event pairs, 333 based on Foata normal form. 58/2751 useless extension candidates. Maximal degree in co-relation 11588. Up to 703 conditions per place. [2024-11-22 21:45:26,296 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 190 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-11-22 21:45:26,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 244 transitions, 3438 flow [2024-11-22 21:45:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-22 21:45:26,297 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-22 21:45:26,297 INFO L175 Difference]: Start difference. First operand has 86 places, 113 transitions, 1292 flow. Second operand 4 states and 102 transitions. [2024-11-22 21:45:26,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 244 transitions, 3438 flow [2024-11-22 21:45:26,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 244 transitions, 3425 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:26,326 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 1614 flow [2024-11-22 21:45:26,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1614, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2024-11-22 21:45:26,327 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 57 predicate places. [2024-11-22 21:45:26,327 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 1614 flow [2024-11-22 21:45:26,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:26,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:26,328 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:26,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:45:26,328 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:26,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1112996230, now seen corresponding path program 1 times [2024-11-22 21:45:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:26,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826236471] [2024-11-22 21:45:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826236471] [2024-11-22 21:45:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826236471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076627245] [2024-11-22 21:45:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:26,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:26,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:26,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:45:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:26,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:45:26,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:26,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:26,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076627245] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:26,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:26,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-22 21:45:26,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830503598] [2024-11-22 21:45:26,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:26,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:45:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:45:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:45:26,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:26,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 1614 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:26,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:26,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:26,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:27,883 INFO L124 PetriNetUnfolderBase]: 3705/8082 cut-off events. [2024-11-22 21:45:27,883 INFO L125 PetriNetUnfolderBase]: For 52309/52540 co-relation queries the response was YES. [2024-11-22 21:45:27,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37499 conditions, 8082 events. 3705/8082 cut-off events. For 52309/52540 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 63474 event pairs, 533 based on Foata normal form. 30/7984 useless extension candidates. Maximal degree in co-relation 31366. Up to 2867 conditions per place. [2024-11-22 21:45:27,963 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 279 selfloop transitions, 19 changer transitions 1/330 dead transitions. [2024-11-22 21:45:27,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 330 transitions, 4777 flow [2024-11-22 21:45:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-22 21:45:27,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7647058823529411 [2024-11-22 21:45:27,965 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 1614 flow. Second operand 5 states and 130 transitions. [2024-11-22 21:45:27,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 330 transitions, 4777 flow [2024-11-22 21:45:28,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 330 transitions, 4777 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:28,080 INFO L231 Difference]: Finished difference. Result has 96 places, 144 transitions, 1723 flow [2024-11-22 21:45:28,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1723, PETRI_PLACES=96, PETRI_TRANSITIONS=144} [2024-11-22 21:45:28,081 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2024-11-22 21:45:28,081 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 144 transitions, 1723 flow [2024-11-22 21:45:28,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:28,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:28,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:28,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:28,282 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,SelfDestructingSolverStorable8 [2024-11-22 21:45:28,283 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:28,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1462961324, now seen corresponding path program 2 times [2024-11-22 21:45:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:28,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585173589] [2024-11-22 21:45:28,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:28,306 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:28,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:45:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585173589] [2024-11-22 21:45:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585173589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743468675] [2024-11-22 21:45:28,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:45:28,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:28,451 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:28,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:45:28,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:45:28,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:28,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:45:28,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:45:28,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 21:45:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743468675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:28,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-22 21:45:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061073899] [2024-11-22 21:45:28,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:28,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:45:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:45:28,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:45:28,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:28,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 144 transitions, 1723 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:28,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:28,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:28,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:29,689 INFO L124 PetriNetUnfolderBase]: 3978/8776 cut-off events. [2024-11-22 21:45:29,690 INFO L125 PetriNetUnfolderBase]: For 60798/61257 co-relation queries the response was YES. [2024-11-22 21:45:29,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43186 conditions, 8776 events. 3978/8776 cut-off events. For 60798/61257 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 71482 event pairs, 558 based on Foata normal form. 53/8686 useless extension candidates. Maximal degree in co-relation 36212. Up to 5644 conditions per place. [2024-11-22 21:45:29,745 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 192 selfloop transitions, 21 changer transitions 1/245 dead transitions. [2024-11-22 21:45:29,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 245 transitions, 3369 flow [2024-11-22 21:45:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:45:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:45:29,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-22 21:45:29,746 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7411764705882353 [2024-11-22 21:45:29,746 INFO L175 Difference]: Start difference. First operand has 96 places, 144 transitions, 1723 flow. Second operand 5 states and 126 transitions. [2024-11-22 21:45:29,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 245 transitions, 3369 flow [2024-11-22 21:45:29,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 245 transitions, 3323 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:29,870 INFO L231 Difference]: Finished difference. Result has 103 places, 158 transitions, 1859 flow [2024-11-22 21:45:29,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1859, PETRI_PLACES=103, PETRI_TRANSITIONS=158} [2024-11-22 21:45:29,870 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 69 predicate places. [2024-11-22 21:45:29,870 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 158 transitions, 1859 flow [2024-11-22 21:45:29,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:29,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:29,871 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:29,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:45:30,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:30,076 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:30,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:30,077 INFO L85 PathProgramCache]: Analyzing trace with hash 623218422, now seen corresponding path program 3 times [2024-11-22 21:45:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:30,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727678084] [2024-11-22 21:45:30,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:45:30,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:30,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:45:30,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:30,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:30,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727678084] [2024-11-22 21:45:30,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727678084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:30,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816571757] [2024-11-22 21:45:30,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:45:30,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:30,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:30,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:45:30,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:45:30,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:30,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:45:30,259 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:30,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:30,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816571757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:30,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:30,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-22 21:45:30,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842296269] [2024-11-22 21:45:30,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:30,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:45:30,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:30,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:45:30,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:45:30,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:30,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 158 transitions, 1859 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:32,178 INFO L124 PetriNetUnfolderBase]: 6620/14489 cut-off events. [2024-11-22 21:45:32,179 INFO L125 PetriNetUnfolderBase]: For 102433/102999 co-relation queries the response was YES. [2024-11-22 21:45:32,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71323 conditions, 14489 events. 6620/14489 cut-off events. For 102433/102999 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 125845 event pairs, 774 based on Foata normal form. 207/14430 useless extension candidates. Maximal degree in co-relation 59549. Up to 3009 conditions per place. [2024-11-22 21:45:32,386 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 359 selfloop transitions, 49 changer transitions 1/440 dead transitions. [2024-11-22 21:45:32,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 440 transitions, 6428 flow [2024-11-22 21:45:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:45:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:45:32,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-11-22 21:45:32,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2024-11-22 21:45:32,388 INFO L175 Difference]: Start difference. First operand has 103 places, 158 transitions, 1859 flow. Second operand 6 states and 158 transitions. [2024-11-22 21:45:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 440 transitions, 6428 flow [2024-11-22 21:45:32,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 440 transitions, 6422 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:32,714 INFO L231 Difference]: Finished difference. Result has 109 places, 174 transitions, 2086 flow [2024-11-22 21:45:32,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2086, PETRI_PLACES=109, PETRI_TRANSITIONS=174} [2024-11-22 21:45:32,715 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 75 predicate places. [2024-11-22 21:45:32,715 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 174 transitions, 2086 flow [2024-11-22 21:45:32,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:32,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:32,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:32,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:45:32,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:32,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:32,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash 710870470, now seen corresponding path program 4 times [2024-11-22 21:45:32,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:32,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101302283] [2024-11-22 21:45:32,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:45:32,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:32,931 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:45:32,931 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:33,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:33,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101302283] [2024-11-22 21:45:33,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101302283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:33,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276720123] [2024-11-22 21:45:33,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:45:33,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:33,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:33,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:33,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:45:33,089 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:45:33,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:33,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 21:45:33,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:33,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276720123] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:33,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:33,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-22 21:45:33,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460245214] [2024-11-22 21:45:33,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:33,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:45:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:33,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:45:33,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:45:33,222 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:33,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 174 transitions, 2086 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:33,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:33,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:35,810 INFO L124 PetriNetUnfolderBase]: 9014/19764 cut-off events. [2024-11-22 21:45:35,810 INFO L125 PetriNetUnfolderBase]: For 151351/151956 co-relation queries the response was YES. [2024-11-22 21:45:35,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102132 conditions, 19764 events. 9014/19764 cut-off events. For 151351/151956 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 183771 event pairs, 1033 based on Foata normal form. 93/19561 useless extension candidates. Maximal degree in co-relation 85770. Up to 10469 conditions per place. [2024-11-22 21:45:35,996 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 361 selfloop transitions, 29 changer transitions 1/422 dead transitions. [2024-11-22 21:45:35,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 422 transitions, 6151 flow [2024-11-22 21:45:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:45:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:45:35,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-11-22 21:45:35,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7549019607843137 [2024-11-22 21:45:35,997 INFO L175 Difference]: Start difference. First operand has 109 places, 174 transitions, 2086 flow. Second operand 6 states and 154 transitions. [2024-11-22 21:45:35,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 422 transitions, 6151 flow [2024-11-22 21:45:36,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 422 transitions, 6018 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:36,646 INFO L231 Difference]: Finished difference. Result has 115 places, 194 transitions, 2236 flow [2024-11-22 21:45:36,648 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=115, PETRI_TRANSITIONS=194} [2024-11-22 21:45:36,648 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 81 predicate places. [2024-11-22 21:45:36,648 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 194 transitions, 2236 flow [2024-11-22 21:45:36,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:36,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:36,649 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:36,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:45:36,849 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,SelfDestructingSolverStorable11 [2024-11-22 21:45:36,850 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:36,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1177393938, now seen corresponding path program 1 times [2024-11-22 21:45:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:36,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431450689] [2024-11-22 21:45:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431450689] [2024-11-22 21:45:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431450689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:36,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:36,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551481179] [2024-11-22 21:45:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:36,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:36,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:36,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:36,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 194 transitions, 2236 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:36,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:36,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:36,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:38,307 INFO L124 PetriNetUnfolderBase]: 5862/12906 cut-off events. [2024-11-22 21:45:38,308 INFO L125 PetriNetUnfolderBase]: For 102476/102590 co-relation queries the response was YES. [2024-11-22 21:45:38,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65269 conditions, 12906 events. 5862/12906 cut-off events. For 102476/102590 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 119087 event pairs, 982 based on Foata normal form. 435/13046 useless extension candidates. Maximal degree in co-relation 56182. Up to 4997 conditions per place. [2024-11-22 21:45:38,391 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 182 selfloop transitions, 32 changer transitions 0/275 dead transitions. [2024-11-22 21:45:38,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 275 transitions, 3539 flow [2024-11-22 21:45:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-22 21:45:38,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7132352941176471 [2024-11-22 21:45:38,393 INFO L175 Difference]: Start difference. First operand has 115 places, 194 transitions, 2236 flow. Second operand 4 states and 97 transitions. [2024-11-22 21:45:38,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 275 transitions, 3539 flow [2024-11-22 21:45:38,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 275 transitions, 3523 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:38,821 INFO L231 Difference]: Finished difference. Result has 120 places, 179 transitions, 2142 flow [2024-11-22 21:45:38,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2142, PETRI_PLACES=120, PETRI_TRANSITIONS=179} [2024-11-22 21:45:38,822 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 86 predicate places. [2024-11-22 21:45:38,822 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 179 transitions, 2142 flow [2024-11-22 21:45:38,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:38,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:38,822 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:38,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:45:38,822 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:38,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2117870836, now seen corresponding path program 5 times [2024-11-22 21:45:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93121367] [2024-11-22 21:45:38,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:38,837 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:38,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93121367] [2024-11-22 21:45:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93121367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259960630] [2024-11-22 21:45:38,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:45:38,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:38,961 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:38,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:45:39,012 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:45:39,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:39,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 21:45:39,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:39,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:39,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259960630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:39,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:39,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-22 21:45:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680833884] [2024-11-22 21:45:39,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:39,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:45:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:45:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:45:39,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:39,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 179 transitions, 2142 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:39,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:39,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:39,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:41,012 INFO L124 PetriNetUnfolderBase]: 6617/15111 cut-off events. [2024-11-22 21:45:41,013 INFO L125 PetriNetUnfolderBase]: For 139129/139850 co-relation queries the response was YES. [2024-11-22 21:45:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80718 conditions, 15111 events. 6617/15111 cut-off events. For 139129/139850 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 145632 event pairs, 734 based on Foata normal form. 227/15105 useless extension candidates. Maximal degree in co-relation 67748. Up to 6319 conditions per place. [2024-11-22 21:45:41,130 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 352 selfloop transitions, 38 changer transitions 1/423 dead transitions. [2024-11-22 21:45:41,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 423 transitions, 6408 flow [2024-11-22 21:45:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:45:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:45:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-11-22 21:45:41,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2024-11-22 21:45:41,131 INFO L175 Difference]: Start difference. First operand has 120 places, 179 transitions, 2142 flow. Second operand 6 states and 158 transitions. [2024-11-22 21:45:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 423 transitions, 6408 flow [2024-11-22 21:45:41,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 423 transitions, 6408 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:41,669 INFO L231 Difference]: Finished difference. Result has 126 places, 192 transitions, 2327 flow [2024-11-22 21:45:41,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2327, PETRI_PLACES=126, PETRI_TRANSITIONS=192} [2024-11-22 21:45:41,669 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2024-11-22 21:45:41,669 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 192 transitions, 2327 flow [2024-11-22 21:45:41,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:41,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:41,670 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:41,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:45:41,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:41,871 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:41,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 846281966, now seen corresponding path program 6 times [2024-11-22 21:45:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44373015] [2024-11-22 21:45:41,872 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:45:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:41,890 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:45:41,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:41,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44373015] [2024-11-22 21:45:41,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44373015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:41,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249948134] [2024-11-22 21:45:41,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:45:41,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:41,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:41,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:41,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:45:42,026 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-22 21:45:42,026 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:45:42,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 21:45:42,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:42,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:45:42,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249948134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:42,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:42,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-22 21:45:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965113059] [2024-11-22 21:45:42,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:42,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:45:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:45:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:45:42,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-11-22 21:45:42,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 192 transitions, 2327 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:42,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:42,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-11-22 21:45:42,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:44,726 INFO L124 PetriNetUnfolderBase]: 8233/18653 cut-off events. [2024-11-22 21:45:44,726 INFO L125 PetriNetUnfolderBase]: For 180857/181845 co-relation queries the response was YES. [2024-11-22 21:45:44,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102355 conditions, 18653 events. 8233/18653 cut-off events. For 180857/181845 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 185781 event pairs, 1110 based on Foata normal form. 141/18419 useless extension candidates. Maximal degree in co-relation 86619. Up to 9199 conditions per place. [2024-11-22 21:45:44,871 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 347 selfloop transitions, 55 changer transitions 1/435 dead transitions. [2024-11-22 21:45:44,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 435 transitions, 6494 flow [2024-11-22 21:45:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:45:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 21:45:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-22 21:45:44,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7598039215686274 [2024-11-22 21:45:44,872 INFO L175 Difference]: Start difference. First operand has 126 places, 192 transitions, 2327 flow. Second operand 6 states and 155 transitions. [2024-11-22 21:45:44,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 435 transitions, 6494 flow [2024-11-22 21:45:45,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 435 transitions, 6464 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-22 21:45:45,430 INFO L231 Difference]: Finished difference. Result has 135 places, 226 transitions, 2819 flow [2024-11-22 21:45:45,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2819, PETRI_PLACES=135, PETRI_TRANSITIONS=226} [2024-11-22 21:45:45,430 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2024-11-22 21:45:45,431 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 226 transitions, 2819 flow [2024-11-22 21:45:45,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:45,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:45,431 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:45,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 21:45:45,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:45,636 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:45,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1841119167, now seen corresponding path program 1 times [2024-11-22 21:45:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:45,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516944959] [2024-11-22 21:45:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:45:45,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 21:45:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:45,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516944959] [2024-11-22 21:45:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516944959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:45:45,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:45:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:45:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287560932] [2024-11-22 21:45:45,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:45:45,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:45:45,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:45:45,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:45:45,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:45,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 226 transitions, 2819 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:45,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:45,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:45,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:46,733 INFO L124 PetriNetUnfolderBase]: 3350/7959 cut-off events. [2024-11-22 21:45:46,734 INFO L125 PetriNetUnfolderBase]: For 95582/96469 co-relation queries the response was YES. [2024-11-22 21:45:46,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46486 conditions, 7959 events. 3350/7959 cut-off events. For 95582/96469 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 72804 event pairs, 458 based on Foata normal form. 253/7992 useless extension candidates. Maximal degree in co-relation 40790. Up to 2422 conditions per place. [2024-11-22 21:45:46,802 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 165 selfloop transitions, 21 changer transitions 0/259 dead transitions. [2024-11-22 21:45:46,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 259 transitions, 3805 flow [2024-11-22 21:45:46,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:45:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:45:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-11-22 21:45:46,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7132352941176471 [2024-11-22 21:45:46,804 INFO L175 Difference]: Start difference. First operand has 135 places, 226 transitions, 2819 flow. Second operand 4 states and 97 transitions. [2024-11-22 21:45:46,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 259 transitions, 3805 flow [2024-11-22 21:45:47,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 259 transitions, 3776 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-22 21:45:47,127 INFO L231 Difference]: Finished difference. Result has 139 places, 198 transitions, 2581 flow [2024-11-22 21:45:47,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2581, PETRI_PLACES=139, PETRI_TRANSITIONS=198} [2024-11-22 21:45:47,129 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 105 predicate places. [2024-11-22 21:45:47,129 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 198 transitions, 2581 flow [2024-11-22 21:45:47,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:47,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:45:47,130 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:45:47,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:45:47,130 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:45:47,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:45:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -889015328, now seen corresponding path program 7 times [2024-11-22 21:45:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:45:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022172183] [2024-11-22 21:45:47,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:45:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:45:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:45:47,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022172183] [2024-11-22 21:45:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022172183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:45:47,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251861658] [2024-11-22 21:45:47,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:45:47,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:45:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:45:47,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:45:47,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:45:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:45:47,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 21:45:47,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:45:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:47,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:45:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:45:48,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251861658] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:45:48,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:45:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-22 21:45:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430175997] [2024-11-22 21:45:48,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:45:48,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:45:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:45:48,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:45:48,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:45:48,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 34 [2024-11-22 21:45:48,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 198 transitions, 2581 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:45:48,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:45:48,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 34 [2024-11-22 21:45:48,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:45:57,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:46:35,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:46:44,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:46:53,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []