./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 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/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.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:35:21,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:35:21,406 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:35:21,415 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:35:21,416 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:35:21,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:35:21,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:35:21,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:35:21,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:35:21,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:35:21,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:35:21,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:35:21,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:35:21,464 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:35:21,477 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:35:21,478 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:35:21,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:35:21,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:35:21,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:35:21,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:35:21,479 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:35:21,483 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:35:21,484 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:35:21,484 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:35:21,484 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:35:21,484 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:35:21,485 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:35:21,485 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:35:21,485 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:35:21,486 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:35:21,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:35:21,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:35:21,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:35:21,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:35:21,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:35:21,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:35:21,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:35:21,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:35:21,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:35:21,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:35:21,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:35:21,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:35:21,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-17 03:35:21,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:35:21,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:35:21,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:35:21,759 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:35:21,760 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:35:21,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-17 03:35:23,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:35:23,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:35:23,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-17 03:35:23,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0250399/daebbfe79e404e008b61f503c8563c8c/FLAG7fcf72e0d [2024-11-17 03:35:23,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e0250399/daebbfe79e404e008b61f503c8563c8c [2024-11-17 03:35:23,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:35:23,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:35:23,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:35:23,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:35:23,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:35:23,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:35:23" (1/1) ... [2024-11-17 03:35:23,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59dc8751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:23, skipping insertion in model container [2024-11-17 03:35:23,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:35:23" (1/1) ... [2024-11-17 03:35:23,856 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:35:24,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:35:24,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:35:24,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:35:24,086 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:35:24,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24 WrapperNode [2024-11-17 03:35:24,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:35:24,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:35:24,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:35:24,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:35:24,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,118 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-17 03:35:24,119 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:35:24,120 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:35:24,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:35:24,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:35:24,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,149 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]. [2024-11-17 03:35:24,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,153 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:35:24,159 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:35:24,159 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:35:24,159 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:35:24,160 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (1/1) ... [2024-11-17 03:35:24,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:35:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:24,211 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) [2024-11-17 03:35:24,218 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 [2024-11-17 03:35:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:35:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:35:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:35:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:35:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:35:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:35:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:35:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:35:24,262 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:35:24,360 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:35:24,361 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:35:24,553 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:35:24,553 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:35:24,722 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:35:24,722 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:35:24,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:35:24 BoogieIcfgContainer [2024-11-17 03:35:24,722 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:35:24,725 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:35:24,725 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:35:24,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:35:24,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:35:23" (1/3) ... [2024-11-17 03:35:24,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f95df2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:35:24, skipping insertion in model container [2024-11-17 03:35:24,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:35:24" (2/3) ... [2024-11-17 03:35:24,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f95df2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:35:24, skipping insertion in model container [2024-11-17 03:35:24,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:35:24" (3/3) ... [2024-11-17 03:35:24,732 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-17 03:35:24,747 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:35:24,747 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:35:24,747 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:35:24,792 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:35:24,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 94 flow [2024-11-17 03:35:24,845 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-17 03:35:24,846 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:35:24,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 74 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-11-17 03:35:24,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 94 flow [2024-11-17 03:35:24,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 37 transitions, 86 flow [2024-11-17 03:35:24,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:35:24,873 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;@537e2223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:35:24,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:35:24,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:35:24,889 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2024-11-17 03:35:24,889 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:35:24,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:24,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:24,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:24,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1587370981, now seen corresponding path program 1 times [2024-11-17 03:35:24,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:24,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95331411] [2024-11-17 03:35:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:25,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95331411] [2024-11-17 03:35:25,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95331411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:25,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:25,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:35:25,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344172119] [2024-11-17 03:35:25,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:25,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:35:25,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:35:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:35:25,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:25,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:25,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:25,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:25,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:25,253 INFO L124 PetriNetUnfolderBase]: 110/266 cut-off events. [2024-11-17 03:35:25,254 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-17 03:35:25,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 266 events. 110/266 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1263 event pairs, 45 based on Foata normal form. 36/228 useless extension candidates. Maximal degree in co-relation 399. Up to 164 conditions per place. [2024-11-17 03:35:25,259 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 18 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-17 03:35:25,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 114 flow [2024-11-17 03:35:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:35:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:35:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 57 transitions. [2024-11-17 03:35:25,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-17 03:35:25,278 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 86 flow. Second operand 2 states and 57 transitions. [2024-11-17 03:35:25,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 114 flow [2024-11-17 03:35:25,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:35:25,283 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 70 flow [2024-11-17 03:35:25,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2024-11-17 03:35:25,289 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-11-17 03:35:25,290 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 70 flow [2024-11-17 03:35:25,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:25,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:25,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:25,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:35:25,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:25,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 365206200, now seen corresponding path program 1 times [2024-11-17 03:35:25,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:25,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175831227] [2024-11-17 03:35:25,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:25,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175831227] [2024-11-17 03:35:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175831227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:35:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483061051] [2024-11-17 03:35:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:25,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:35:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:25,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:35:25,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:35:25,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:25,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:25,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:25,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:25,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:25,592 INFO L124 PetriNetUnfolderBase]: 146/326 cut-off events. [2024-11-17 03:35:25,592 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:35:25,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 326 events. 146/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1512 event pairs, 12 based on Foata normal form. 1/269 useless extension candidates. Maximal degree in co-relation 543. Up to 186 conditions per place. [2024-11-17 03:35:25,596 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 21 selfloop transitions, 7 changer transitions 1/44 dead transitions. [2024-11-17 03:35:25,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 153 flow [2024-11-17 03:35:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:35:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:35:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-17 03:35:25,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-17 03:35:25,601 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 3 states and 84 transitions. [2024-11-17 03:35:25,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 153 flow [2024-11-17 03:35:25,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:25,605 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 109 flow [2024-11-17 03:35:25,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2024-11-17 03:35:25,606 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-11-17 03:35:25,606 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 109 flow [2024-11-17 03:35:25,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:25,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:25,609 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:25,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:35:25,609 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1055724353, now seen corresponding path program 1 times [2024-11-17 03:35:25,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:25,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65236727] [2024-11-17 03:35:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65236727] [2024-11-17 03:35:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65236727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:25,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704855588] [2024-11-17 03:35:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:25,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:25,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:35:25,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 109 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) [2024-11-17 03:35:25,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:25,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:35:25,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:26,045 INFO L124 PetriNetUnfolderBase]: 308/586 cut-off events. [2024-11-17 03:35:26,045 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-17 03:35:26,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 586 events. 308/586 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2981 event pairs, 31 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 1248. Up to 210 conditions per place. [2024-11-17 03:35:26,054 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 50 selfloop transitions, 10 changer transitions 5/76 dead transitions. [2024-11-17 03:35:26,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 350 flow [2024-11-17 03:35:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:35:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:35:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-17 03:35:26,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-17 03:35:26,059 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 109 flow. Second operand 5 states and 130 transitions. [2024-11-17 03:35:26,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 350 flow [2024-11-17 03:35:26,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 76 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:35:26,065 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 163 flow [2024-11-17 03:35:26,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-11-17 03:35:26,066 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-17 03:35:26,067 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 163 flow [2024-11-17 03:35:26,067 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) [2024-11-17 03:35:26,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:26,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:26,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:35:26,069 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:26,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 974159243, now seen corresponding path program 2 times [2024-11-17 03:35:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:26,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469539387] [2024-11-17 03:35:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:26,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:26,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:26,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469539387] [2024-11-17 03:35:26,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469539387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:26,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:26,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535237253] [2024-11-17 03:35:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:26,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:26,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:26,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:35:26,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 163 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) [2024-11-17 03:35:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:26,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:35:26,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:26,399 INFO L124 PetriNetUnfolderBase]: 297/608 cut-off events. [2024-11-17 03:35:26,400 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-17 03:35:26,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 608 events. 297/608 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3173 event pairs, 28 based on Foata normal form. 14/580 useless extension candidates. Maximal degree in co-relation 1453. Up to 149 conditions per place. [2024-11-17 03:35:26,405 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 49 selfloop transitions, 12 changer transitions 5/77 dead transitions. [2024-11-17 03:35:26,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 410 flow [2024-11-17 03:35:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:35:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:35:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-17 03:35:26,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-17 03:35:26,409 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 163 flow. Second operand 5 states and 128 transitions. [2024-11-17 03:35:26,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 410 flow [2024-11-17 03:35:26,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:26,414 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 249 flow [2024-11-17 03:35:26,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-17 03:35:26,416 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-11-17 03:35:26,416 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 249 flow [2024-11-17 03:35:26,417 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) [2024-11-17 03:35:26,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:26,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:26,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:35:26,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:26,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1390506807, now seen corresponding path program 1 times [2024-11-17 03:35:26,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:26,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399940508] [2024-11-17 03:35:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:26,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399940508] [2024-11-17 03:35:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399940508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:26,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:26,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:26,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101761149] [2024-11-17 03:35:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:26,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:26,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:35:26,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 249 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) [2024-11-17 03:35:26,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:26,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:35:26,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:26,709 INFO L124 PetriNetUnfolderBase]: 303/601 cut-off events. [2024-11-17 03:35:26,709 INFO L125 PetriNetUnfolderBase]: For 1082/1082 co-relation queries the response was YES. [2024-11-17 03:35:26,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 601 events. 303/601 cut-off events. For 1082/1082 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3141 event pairs, 35 based on Foata normal form. 4/557 useless extension candidates. Maximal degree in co-relation 1735. Up to 248 conditions per place. [2024-11-17 03:35:26,714 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 57 selfloop transitions, 9 changer transitions 2/79 dead transitions. [2024-11-17 03:35:26,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 506 flow [2024-11-17 03:35:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:35:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:35:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-17 03:35:26,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-17 03:35:26,717 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 249 flow. Second operand 5 states and 126 transitions. [2024-11-17 03:35:26,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 506 flow [2024-11-17 03:35:26,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 502 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:26,726 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 300 flow [2024-11-17 03:35:26,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-11-17 03:35:26,727 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-17 03:35:26,728 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 300 flow [2024-11-17 03:35:26,728 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) [2024-11-17 03:35:26,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:26,729 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:26,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:35:26,729 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:26,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash 986667656, now seen corresponding path program 1 times [2024-11-17 03:35:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:26,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615102236] [2024-11-17 03:35:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615102236] [2024-11-17 03:35:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615102236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242841973] [2024-11-17 03:35:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:26,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:26,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:26,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:35:26,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 300 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) [2024-11-17 03:35:26,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:26,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:35:26,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:27,011 INFO L124 PetriNetUnfolderBase]: 281/592 cut-off events. [2024-11-17 03:35:27,012 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-11-17 03:35:27,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 592 events. 281/592 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2835 event pairs, 29 based on Foata normal form. 19/566 useless extension candidates. Maximal degree in co-relation 1731. Up to 180 conditions per place. [2024-11-17 03:35:27,018 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 12 changer transitions 2/79 dead transitions. [2024-11-17 03:35:27,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 558 flow [2024-11-17 03:35:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:35:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:35:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-17 03:35:27,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-17 03:35:27,020 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 300 flow. Second operand 5 states and 123 transitions. [2024-11-17 03:35:27,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 558 flow [2024-11-17 03:35:27,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 542 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-17 03:35:27,025 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 363 flow [2024-11-17 03:35:27,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-11-17 03:35:27,026 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-11-17 03:35:27,027 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 363 flow [2024-11-17 03:35:27,027 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) [2024-11-17 03:35:27,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:27,027 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1] [2024-11-17 03:35:27,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:35:27,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:27,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:27,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1891147237, now seen corresponding path program 1 times [2024-11-17 03:35:27,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:27,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978357704] [2024-11-17 03:35:27,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:27,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:27,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978357704] [2024-11-17 03:35:27,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978357704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478236973] [2024-11-17 03:35:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:27,284 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) [2024-11-17 03:35:27,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:35:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:27,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:35:27,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:27,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:27,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:35:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:28,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478236973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:35:28,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:35:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-17 03:35:28,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490493709] [2024-11-17 03:35:28,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:35:28,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 03:35:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 03:35:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:35:28,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:35:28,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 363 flow. Second operand has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:28,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:28,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:35:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:28,809 INFO L124 PetriNetUnfolderBase]: 605/1232 cut-off events. [2024-11-17 03:35:28,810 INFO L125 PetriNetUnfolderBase]: For 4716/4716 co-relation queries the response was YES. [2024-11-17 03:35:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1232 events. 605/1232 cut-off events. For 4716/4716 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6604 event pairs, 24 based on Foata normal form. 52/1202 useless extension candidates. Maximal degree in co-relation 3981. Up to 302 conditions per place. [2024-11-17 03:35:28,822 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 116 selfloop transitions, 51 changer transitions 0/178 dead transitions. [2024-11-17 03:35:28,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 178 transitions, 1404 flow [2024-11-17 03:35:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 03:35:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 03:35:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 423 transitions. [2024-11-17 03:35:28,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5565789473684211 [2024-11-17 03:35:28,824 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 363 flow. Second operand 19 states and 423 transitions. [2024-11-17 03:35:28,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 178 transitions, 1404 flow [2024-11-17 03:35:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 1365 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-17 03:35:28,834 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 856 flow [2024-11-17 03:35:28,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=856, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-11-17 03:35:28,836 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2024-11-17 03:35:28,836 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 856 flow [2024-11-17 03:35:28,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:28,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:28,837 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:35:28,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:35:29,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:29,042 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:29,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:29,043 INFO L85 PathProgramCache]: Analyzing trace with hash -164791980, now seen corresponding path program 2 times [2024-11-17 03:35:29,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:29,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536447515] [2024-11-17 03:35:29,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:29,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:35:29,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:29,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536447515] [2024-11-17 03:35:29,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536447515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:29,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:29,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139024140] [2024-11-17 03:35:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:29,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:29,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-17 03:35:29,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:29,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:29,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-17 03:35:29,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:29,557 INFO L124 PetriNetUnfolderBase]: 1073/2376 cut-off events. [2024-11-17 03:35:29,558 INFO L125 PetriNetUnfolderBase]: For 11927/12021 co-relation queries the response was YES. [2024-11-17 03:35:29,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 2376 events. 1073/2376 cut-off events. For 11927/12021 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 16168 event pairs, 306 based on Foata normal form. 16/2114 useless extension candidates. Maximal degree in co-relation 8591. Up to 613 conditions per place. [2024-11-17 03:35:29,579 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 104 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-11-17 03:35:29,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 161 transitions, 1810 flow [2024-11-17 03:35:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:35:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:35:29,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-17 03:35:29,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-17 03:35:29,581 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 856 flow. Second operand 4 states and 113 transitions. [2024-11-17 03:35:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 161 transitions, 1810 flow [2024-11-17 03:35:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 161 transitions, 1693 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-11-17 03:35:29,609 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1116 flow [2024-11-17 03:35:29,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1116, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-11-17 03:35:29,610 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2024-11-17 03:35:29,610 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1116 flow [2024-11-17 03:35:29,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:29,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:29,611 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1] [2024-11-17 03:35:29,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:35:29,611 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:29,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -48421997, now seen corresponding path program 1 times [2024-11-17 03:35:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:29,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587506423] [2024-11-17 03:35:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:29,734 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587506423] [2024-11-17 03:35:29,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587506423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:29,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:29,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:29,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634512772] [2024-11-17 03:35:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:29,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-17 03:35:29,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 1116 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:29,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:29,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-17 03:35:29,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:30,528 INFO L124 PetriNetUnfolderBase]: 2599/5350 cut-off events. [2024-11-17 03:35:30,529 INFO L125 PetriNetUnfolderBase]: For 28414/28653 co-relation queries the response was YES. [2024-11-17 03:35:30,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20185 conditions, 5350 events. 2599/5350 cut-off events. For 28414/28653 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 43162 event pairs, 822 based on Foata normal form. 15/4957 useless extension candidates. Maximal degree in co-relation 20154. Up to 1543 conditions per place. [2024-11-17 03:35:30,582 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 142 selfloop transitions, 32 changer transitions 0/211 dead transitions. [2024-11-17 03:35:30,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 211 transitions, 2694 flow [2024-11-17 03:35:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:35:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:35:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-17 03:35:30,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-17 03:35:30,584 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1116 flow. Second operand 4 states and 109 transitions. [2024-11-17 03:35:30,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 211 transitions, 2694 flow [2024-11-17 03:35:30,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 211 transitions, 2685 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:35:30,646 INFO L231 Difference]: Finished difference. Result has 96 places, 136 transitions, 1622 flow [2024-11-17 03:35:30,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1622, PETRI_PLACES=96, PETRI_TRANSITIONS=136} [2024-11-17 03:35:30,647 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2024-11-17 03:35:30,648 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 1622 flow [2024-11-17 03:35:30,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:30,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:30,648 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, 1, 1, 1, 1] [2024-11-17 03:35:30,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:35:30,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:30,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 844327261, now seen corresponding path program 1 times [2024-11-17 03:35:30,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134575096] [2024-11-17 03:35:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:30,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134575096] [2024-11-17 03:35:30,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134575096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:30,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121883488] [2024-11-17 03:35:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:30,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:30,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:30,905 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) [2024-11-17 03:35:30,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:35:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:30,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:35:30,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:31,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:35:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121883488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:35:31,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:35:31,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-17 03:35:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852843269] [2024-11-17 03:35:31,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:35:31,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:35:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:35:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:35:31,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:31,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 136 transitions, 1622 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:31,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:31,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:33,130 INFO L124 PetriNetUnfolderBase]: 5218/12077 cut-off events. [2024-11-17 03:35:33,131 INFO L125 PetriNetUnfolderBase]: For 83198/83599 co-relation queries the response was YES. [2024-11-17 03:35:33,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49489 conditions, 12077 events. 5218/12077 cut-off events. For 83198/83599 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 110058 event pairs, 907 based on Foata normal form. 48/11606 useless extension candidates. Maximal degree in co-relation 49456. Up to 3344 conditions per place. [2024-11-17 03:35:33,337 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 296 selfloop transitions, 23 changer transitions 1/360 dead transitions. [2024-11-17 03:35:33,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 360 transitions, 5057 flow [2024-11-17 03:35:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:35:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:35:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-17 03:35:33,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-11-17 03:35:33,343 INFO L175 Difference]: Start difference. First operand has 96 places, 136 transitions, 1622 flow. Second operand 6 states and 178 transitions. [2024-11-17 03:35:33,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 360 transitions, 5057 flow [2024-11-17 03:35:33,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 360 transitions, 5057 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:33,560 INFO L231 Difference]: Finished difference. Result has 102 places, 152 transitions, 1755 flow [2024-11-17 03:35:33,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1755, PETRI_PLACES=102, PETRI_TRANSITIONS=152} [2024-11-17 03:35:33,564 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2024-11-17 03:35:33,565 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 152 transitions, 1755 flow [2024-11-17 03:35:33,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:33,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:33,565 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, 1, 1, 1, 1] [2024-11-17 03:35:33,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:35:33,766 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,SelfDestructingSolverStorable9 [2024-11-17 03:35:33,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:33,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1638865653, now seen corresponding path program 2 times [2024-11-17 03:35:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846486259] [2024-11-17 03:35:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:33,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:33,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846486259] [2024-11-17 03:35:33,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846486259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:33,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269357632] [2024-11-17 03:35:33,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:35:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:33,993 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) [2024-11-17 03:35:33,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:35:34,071 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:35:34,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:35:34,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:35:34,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:34,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:35:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:34,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269357632] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:35:34,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:35:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-17 03:35:34,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461708016] [2024-11-17 03:35:34,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:35:34,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:35:34,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:35:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:35:34,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:34,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 152 transitions, 1755 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:34,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:34,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:37,114 INFO L124 PetriNetUnfolderBase]: 9304/22015 cut-off events. [2024-11-17 03:35:37,115 INFO L125 PetriNetUnfolderBase]: For 157742/158560 co-relation queries the response was YES. [2024-11-17 03:35:37,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93742 conditions, 22015 events. 9304/22015 cut-off events. For 157742/158560 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 221067 event pairs, 1519 based on Foata normal form. 75/21310 useless extension candidates. Maximal degree in co-relation 93707. Up to 8132 conditions per place. [2024-11-17 03:35:37,351 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 350 selfloop transitions, 29 changer transitions 1/420 dead transitions. [2024-11-17 03:35:37,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 420 transitions, 5932 flow [2024-11-17 03:35:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:35:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:35:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-17 03:35:37,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-11-17 03:35:37,353 INFO L175 Difference]: Start difference. First operand has 102 places, 152 transitions, 1755 flow. Second operand 6 states and 182 transitions. [2024-11-17 03:35:37,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 420 transitions, 5932 flow [2024-11-17 03:35:37,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 420 transitions, 5862 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:37,886 INFO L231 Difference]: Finished difference. Result has 109 places, 174 transitions, 1930 flow [2024-11-17 03:35:37,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1930, PETRI_PLACES=109, PETRI_TRANSITIONS=174} [2024-11-17 03:35:37,887 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2024-11-17 03:35:37,887 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 174 transitions, 1930 flow [2024-11-17 03:35:37,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:37,887 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:37,887 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1] [2024-11-17 03:35:37,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:35:38,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:38,089 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:38,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -572509377, now seen corresponding path program 1 times [2024-11-17 03:35:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766646171] [2024-11-17 03:35:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:35:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:38,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766646171] [2024-11-17 03:35:38,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766646171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:38,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:38,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:38,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437655118] [2024-11-17 03:35:38,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:38,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:38,220 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-17 03:35:38,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 174 transitions, 1930 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:38,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:38,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-17 03:35:38,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:40,006 INFO L124 PetriNetUnfolderBase]: 6755/14881 cut-off events. [2024-11-17 03:35:40,007 INFO L125 PetriNetUnfolderBase]: For 101096/101346 co-relation queries the response was YES. [2024-11-17 03:35:40,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63194 conditions, 14881 events. 6755/14881 cut-off events. For 101096/101346 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 142931 event pairs, 1418 based on Foata normal form. 376/14740 useless extension candidates. Maximal degree in co-relation 63156. Up to 5716 conditions per place. [2024-11-17 03:35:40,176 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 167 selfloop transitions, 32 changer transitions 0/236 dead transitions. [2024-11-17 03:35:40,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 236 transitions, 2924 flow [2024-11-17 03:35:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:35:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:35:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-17 03:35:40,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-17 03:35:40,178 INFO L175 Difference]: Start difference. First operand has 109 places, 174 transitions, 1930 flow. Second operand 4 states and 105 transitions. [2024-11-17 03:35:40,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 236 transitions, 2924 flow [2024-11-17 03:35:40,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 236 transitions, 2888 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:40,462 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1835 flow [2024-11-17 03:35:40,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1835, PETRI_PLACES=114, PETRI_TRANSITIONS=159} [2024-11-17 03:35:40,463 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-11-17 03:35:40,463 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1835 flow [2024-11-17 03:35:40,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:40,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:40,464 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, 1, 1, 1, 1] [2024-11-17 03:35:40,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:35:40,464 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:40,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:40,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1083624947, now seen corresponding path program 3 times [2024-11-17 03:35:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666630434] [2024-11-17 03:35:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:40,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:40,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666630434] [2024-11-17 03:35:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666630434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698406704] [2024-11-17 03:35:40,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:35:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:40,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:40,689 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) [2024-11-17 03:35:40,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:35:40,772 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 03:35:40,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:35:40,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:35:40,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:40,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:35:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:41,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698406704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:35:41,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:35:41,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-17 03:35:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126540387] [2024-11-17 03:35:41,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:35:41,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:35:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:35:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:35:41,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:41,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 159 transitions, 1835 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:41,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:41,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:41,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:43,985 INFO L124 PetriNetUnfolderBase]: 8444/21186 cut-off events. [2024-11-17 03:35:43,986 INFO L125 PetriNetUnfolderBase]: For 186731/187504 co-relation queries the response was YES. [2024-11-17 03:35:44,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95078 conditions, 21186 events. 8444/21186 cut-off events. For 186731/187504 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 227991 event pairs, 1409 based on Foata normal form. 182/20802 useless extension candidates. Maximal degree in co-relation 95038. Up to 7483 conditions per place. [2024-11-17 03:35:44,228 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 321 selfloop transitions, 32 changer transitions 1/395 dead transitions. [2024-11-17 03:35:44,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 395 transitions, 5723 flow [2024-11-17 03:35:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:35:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:35:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-17 03:35:44,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-11-17 03:35:44,230 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1835 flow. Second operand 6 states and 182 transitions. [2024-11-17 03:35:44,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 395 transitions, 5723 flow [2024-11-17 03:35:44,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 395 transitions, 5723 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:44,901 INFO L231 Difference]: Finished difference. Result has 122 places, 184 transitions, 2119 flow [2024-11-17 03:35:44,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2119, PETRI_PLACES=122, PETRI_TRANSITIONS=184} [2024-11-17 03:35:44,902 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2024-11-17 03:35:44,902 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 184 transitions, 2119 flow [2024-11-17 03:35:44,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:44,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:44,902 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, 1, 1, 1, 1] [2024-11-17 03:35:44,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 03:35:45,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:45,103 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:45,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1708260567, now seen corresponding path program 4 times [2024-11-17 03:35:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307933347] [2024-11-17 03:35:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307933347] [2024-11-17 03:35:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307933347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:45,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486704574] [2024-11-17 03:35:45,317 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:35:45,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:45,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:45,319 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) [2024-11-17 03:35:45,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:35:45,380 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:35:45,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:35:45,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:35:45,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:45,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:35:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:35:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486704574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:35:45,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:35:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-17 03:35:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075243746] [2024-11-17 03:35:45,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:35:45,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:35:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:45,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:35:45,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:35:45,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-17 03:35:45,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 184 transitions, 2119 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:45,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:45,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-17 03:35:45,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:49,246 INFO L124 PetriNetUnfolderBase]: 10618/26457 cut-off events. [2024-11-17 03:35:49,246 INFO L125 PetriNetUnfolderBase]: For 247526/248680 co-relation queries the response was YES. [2024-11-17 03:35:49,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123912 conditions, 26457 events. 10618/26457 cut-off events. For 247526/248680 co-relation queries the response was YES. Maximal size of possible extension queue 1083. Compared 293795 event pairs, 2059 based on Foata normal form. 220/25813 useless extension candidates. Maximal degree in co-relation 123868. Up to 11199 conditions per place. [2024-11-17 03:35:49,450 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 310 selfloop transitions, 55 changer transitions 1/407 dead transitions. [2024-11-17 03:35:49,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 407 transitions, 5843 flow [2024-11-17 03:35:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:35:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:35:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-11-17 03:35:49,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7458333333333333 [2024-11-17 03:35:49,452 INFO L175 Difference]: Start difference. First operand has 122 places, 184 transitions, 2119 flow. Second operand 6 states and 179 transitions. [2024-11-17 03:35:49,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 407 transitions, 5843 flow [2024-11-17 03:35:50,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 407 transitions, 5813 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-17 03:35:50,300 INFO L231 Difference]: Finished difference. Result has 131 places, 218 transitions, 2610 flow [2024-11-17 03:35:50,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2610, PETRI_PLACES=131, PETRI_TRANSITIONS=218} [2024-11-17 03:35:50,300 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2024-11-17 03:35:50,301 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 218 transitions, 2610 flow [2024-11-17 03:35:50,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:50,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:50,301 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1] [2024-11-17 03:35:50,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:35:50,501 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,SelfDestructingSolverStorable13 [2024-11-17 03:35:50,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:50,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash -620038734, now seen corresponding path program 1 times [2024-11-17 03:35:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:50,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318683810] [2024-11-17 03:35:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:35:50,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:50,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318683810] [2024-11-17 03:35:50,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318683810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:35:50,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:35:50,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:35:50,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507860423] [2024-11-17 03:35:50,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:35:50,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:35:50,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:35:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:35:50,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:35:50,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-17 03:35:50,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 218 transitions, 2610 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:50,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:35:50,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-17 03:35:50,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:35:52,332 INFO L124 PetriNetUnfolderBase]: 5197/12387 cut-off events. [2024-11-17 03:35:52,332 INFO L125 PetriNetUnfolderBase]: For 121637/122893 co-relation queries the response was YES. [2024-11-17 03:35:52,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60684 conditions, 12387 events. 5197/12387 cut-off events. For 121637/122893 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 121952 event pairs, 1155 based on Foata normal form. 326/12355 useless extension candidates. Maximal degree in co-relation 60635. Up to 4168 conditions per place. [2024-11-17 03:35:52,431 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 221 selfloop transitions, 28 changer transitions 0/287 dead transitions. [2024-11-17 03:35:52,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 287 transitions, 4074 flow [2024-11-17 03:35:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:35:52,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:35:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-17 03:35:52,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-17 03:35:52,433 INFO L175 Difference]: Start difference. First operand has 131 places, 218 transitions, 2610 flow. Second operand 4 states and 106 transitions. [2024-11-17 03:35:52,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 287 transitions, 4074 flow [2024-11-17 03:35:52,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 287 transitions, 4024 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-17 03:35:52,626 INFO L231 Difference]: Finished difference. Result has 135 places, 191 transitions, 2392 flow [2024-11-17 03:35:52,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2289, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2392, PETRI_PLACES=135, PETRI_TRANSITIONS=191} [2024-11-17 03:35:52,626 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 97 predicate places. [2024-11-17 03:35:52,626 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 191 transitions, 2392 flow [2024-11-17 03:35:52,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:35:52,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:35:52,627 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 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, 1, 1] [2024-11-17 03:35:52,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 03:35:52,627 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:35:52,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:35:52,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1232821032, now seen corresponding path program 5 times [2024-11-17 03:35:52,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:35:52,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402823520] [2024-11-17 03:35:52,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:35:52,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:35:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:35:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:35:53,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402823520] [2024-11-17 03:35:53,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402823520] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:35:53,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354129650] [2024-11-17 03:35:53,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:35:53,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:35:53,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:35:53,119 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) [2024-11-17 03:35:53,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:35:53,231 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-17 03:35:53,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:35:53,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 03:35:53,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:35:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:35:54,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:36:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:36:06,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354129650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:36:06,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:36:06,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-11-17 03:36:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335585285] [2024-11-17 03:36:06,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:36:06,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 03:36:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:36:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 03:36:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=315, Unknown=3, NotChecked=0, Total=380 [2024-11-17 03:36:10,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:36:10,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-17 03:36:10,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 191 transitions, 2392 flow. Second operand has 20 states, 20 states have (on average 17.05) internal successors, (341), 20 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:36:10,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:36:10,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-17 03:36:10,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:36:17,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:36:21,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:36:25,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:36:27,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-17 03:36:38,660 WARN L286 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 38 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-17 03:36:43,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []