./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 023d838f 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-023d838-m [2024-11-10 18:16:16,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:16:16,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:16:16,863 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:16:16,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:16:16,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:16:16,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:16:16,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:16:16,943 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:16:16,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:16:16,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:16:16,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:16:16,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:16:16,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:16:16,948 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:16:16,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:16:16,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:16:16,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:16:16,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:16:16,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:16:16,949 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:16:16,953 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:16:16,953 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:16:16,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:16:16,954 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:16:16,954 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:16:16,954 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:16:16,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:16:16,955 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:16:16,955 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:16:16,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:16:16,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:16:16,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:16:16,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:16:16,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:16:16,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:16:16,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:16:16,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:16:16,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:16:16,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:16:16,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:16:16,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:16:16,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c558e00c0dd9b5f4cf40cba6e03e276a996696c71c282947f4c8d13390dc25bf [2024-11-10 18:16:17,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:16:17,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:16:17,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:16:17,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:16:17,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:16:17,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-10 18:16:18,906 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:16:19,145 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:16:19,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2024-11-10 18:16:19,157 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2334ab629/bcb826a6e0a54d998d7fce09eb0aa70b/FLAGda9860572 [2024-11-10 18:16:19,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2334ab629/bcb826a6e0a54d998d7fce09eb0aa70b [2024-11-10 18:16:19,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:16:19,183 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:16:19,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:16:19,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:16:19,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:16:19,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18365937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19, skipping insertion in model container [2024-11-10 18:16:19,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,219 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:16:19,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:16:19,488 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:16:19,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:16:19,535 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:16:19,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19 WrapperNode [2024-11-10 18:16:19,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:16:19,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:16:19,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:16:19,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:16:19,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,587 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-10 18:16:19,587 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:16:19,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:16:19,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:16:19,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:16:19,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,614 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]. [2024-11-10 18:16:19,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,618 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:16:19,624 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:16:19,624 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:16:19,624 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:16:19,625 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (1/1) ... [2024-11-10 18:16:19,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:16:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:19,665 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) [2024-11-10 18:16:19,669 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 [2024-11-10 18:16:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:16:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:16:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:16:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:16:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:16:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:16:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:16:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:16:19,715 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:16:19,897 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:16:19,899 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:16:20,160 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:16:20,161 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:16:20,301 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:16:20,302 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:16:20,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:16:20 BoogieIcfgContainer [2024-11-10 18:16:20,302 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:16:20,304 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:16:20,304 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:16:20,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:16:20,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:16:19" (1/3) ... [2024-11-10 18:16:20,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c73bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:16:20, skipping insertion in model container [2024-11-10 18:16:20,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:16:19" (2/3) ... [2024-11-10 18:16:20,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98c73bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:16:20, skipping insertion in model container [2024-11-10 18:16:20,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:16:20" (3/3) ... [2024-11-10 18:16:20,310 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-11-10 18:16:20,328 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:16:20,329 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:16:20,329 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:16:20,384 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:16:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 40 transitions, 94 flow [2024-11-10 18:16:20,445 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-10 18:16:20,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:16:20,451 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. [2024-11-10 18:16:20,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 40 transitions, 94 flow [2024-11-10 18:16:20,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 37 transitions, 86 flow [2024-11-10 18:16:20,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:16:20,478 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;@3f7f7e52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:16:20,479 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 18:16:20,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:16:20,490 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2024-11-10 18:16:20,490 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:16:20,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:20,491 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:16:20,492 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)] === [2024-11-10 18:16:20,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:20,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1587370981, now seen corresponding path program 1 times [2024-11-10 18:16:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:20,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223638197] [2024-11-10 18:16:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:20,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223638197] [2024-11-10 18:16:20,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223638197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:20,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:20,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:16:20,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506729175] [2024-11-10 18:16:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:20,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:16:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:16:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:16:20,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:20,719 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) [2024-11-10 18:16:20,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:20,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:20,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:20,836 INFO L124 PetriNetUnfolderBase]: 110/266 cut-off events. [2024-11-10 18:16:20,837 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:16:20,839 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. [2024-11-10 18:16:20,843 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 18 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2024-11-10 18:16:20,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 114 flow [2024-11-10 18:16:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:16:20,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:16:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 57 transitions. [2024-11-10 18:16:20,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-11-10 18:16:20,860 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 86 flow. Second operand 2 states and 57 transitions. [2024-11-10 18:16:20,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 114 flow [2024-11-10 18:16:20,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 106 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:16:20,867 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 70 flow [2024-11-10 18:16:20,869 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} [2024-11-10 18:16:20,875 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2024-11-10 18:16:20,876 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 70 flow [2024-11-10 18:16:20,876 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) [2024-11-10 18:16:20,876 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:20,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:16:20,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:16:20,877 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)] === [2024-11-10 18:16:20,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:20,878 INFO L85 PathProgramCache]: Analyzing trace with hash 365206200, now seen corresponding path program 1 times [2024-11-10 18:16:20,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:20,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283502080] [2024-11-10 18:16:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283502080] [2024-11-10 18:16:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283502080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:21,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:21,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:16:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776077970] [2024-11-10 18:16:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:21,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:16:21,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:16:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:16:21,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:21,088 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) [2024-11-10 18:16:21,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:21,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:21,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:21,172 INFO L124 PetriNetUnfolderBase]: 146/326 cut-off events. [2024-11-10 18:16:21,173 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:16:21,174 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. [2024-11-10 18:16:21,176 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 21 selfloop transitions, 7 changer transitions 1/44 dead transitions. [2024-11-10 18:16:21,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 153 flow [2024-11-10 18:16:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:16:21,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:16:21,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-10 18:16:21,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 18:16:21,178 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 70 flow. Second operand 3 states and 84 transitions. [2024-11-10 18:16:21,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 153 flow [2024-11-10 18:16:21,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:21,184 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 109 flow [2024-11-10 18:16:21,185 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} [2024-11-10 18:16:21,185 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-11-10 18:16:21,185 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 109 flow [2024-11-10 18:16:21,186 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) [2024-11-10 18:16:21,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:21,186 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] [2024-11-10 18:16:21,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:16:21,186 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)] === [2024-11-10 18:16:21,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1055724353, now seen corresponding path program 1 times [2024-11-10 18:16:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:21,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727980744] [2024-11-10 18:16:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:21,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:21,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727980744] [2024-11-10 18:16:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727980744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:21,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:21,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:21,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807939684] [2024-11-10 18:16:21,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:21,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:21,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:21,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:16:21,469 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) [2024-11-10 18:16:21,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:21,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:16:21,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:21,635 INFO L124 PetriNetUnfolderBase]: 308/586 cut-off events. [2024-11-10 18:16:21,636 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-10 18:16:21,638 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. [2024-11-10 18:16:21,641 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 50 selfloop transitions, 10 changer transitions 5/76 dead transitions. [2024-11-10 18:16:21,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 350 flow [2024-11-10 18:16:21,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:16:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:16:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-10 18:16:21,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-10 18:16:21,644 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 109 flow. Second operand 5 states and 130 transitions. [2024-11-10 18:16:21,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 350 flow [2024-11-10 18:16:21,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 76 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:16:21,647 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 163 flow [2024-11-10 18:16:21,647 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} [2024-11-10 18:16:21,648 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-10 18:16:21,648 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 163 flow [2024-11-10 18:16:21,648 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) [2024-11-10 18:16:21,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:21,648 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] [2024-11-10 18:16:21,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:16:21,649 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)] === [2024-11-10 18:16:21,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:21,649 INFO L85 PathProgramCache]: Analyzing trace with hash 974159243, now seen corresponding path program 2 times [2024-11-10 18:16:21,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:21,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562547586] [2024-11-10 18:16:21,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:21,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:21,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562547586] [2024-11-10 18:16:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562547586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:21,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:21,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628871937] [2024-11-10 18:16:21,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:21,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:21,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:16:21,754 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) [2024-11-10 18:16:21,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:21,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:16:21,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:21,889 INFO L124 PetriNetUnfolderBase]: 297/608 cut-off events. [2024-11-10 18:16:21,889 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-11-10 18:16:21,892 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. [2024-11-10 18:16:21,895 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 49 selfloop transitions, 12 changer transitions 5/77 dead transitions. [2024-11-10 18:16:21,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 77 transitions, 410 flow [2024-11-10 18:16:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:16:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:16:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-10 18:16:21,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-10 18:16:21,898 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 163 flow. Second operand 5 states and 128 transitions. [2024-11-10 18:16:21,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 77 transitions, 410 flow [2024-11-10 18:16:21,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:21,901 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 249 flow [2024-11-10 18:16:21,901 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} [2024-11-10 18:16:21,902 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-11-10 18:16:21,902 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 249 flow [2024-11-10 18:16:21,903 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) [2024-11-10 18:16:21,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:21,903 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] [2024-11-10 18:16:21,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:16:21,903 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)] === [2024-11-10 18:16:21,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1390506807, now seen corresponding path program 1 times [2024-11-10 18:16:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466736239] [2024-11-10 18:16:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:22,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466736239] [2024-11-10 18:16:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466736239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:22,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:22,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958490138] [2024-11-10 18:16:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:22,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:22,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:22,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:22,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:16:22,031 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) [2024-11-10 18:16:22,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:22,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:16:22,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:22,204 INFO L124 PetriNetUnfolderBase]: 303/601 cut-off events. [2024-11-10 18:16:22,205 INFO L125 PetriNetUnfolderBase]: For 1082/1082 co-relation queries the response was YES. [2024-11-10 18:16:22,208 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. [2024-11-10 18:16:22,233 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 57 selfloop transitions, 9 changer transitions 2/79 dead transitions. [2024-11-10 18:16:22,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 506 flow [2024-11-10 18:16:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:16:22,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:16:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-10 18:16:22,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-10 18:16:22,235 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 249 flow. Second operand 5 states and 126 transitions. [2024-11-10 18:16:22,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 506 flow [2024-11-10 18:16:22,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 502 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:22,242 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 300 flow [2024-11-10 18:16:22,242 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} [2024-11-10 18:16:22,243 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-10 18:16:22,243 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 300 flow [2024-11-10 18:16:22,243 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) [2024-11-10 18:16:22,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:22,244 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] [2024-11-10 18:16:22,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:16:22,244 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)] === [2024-11-10 18:16:22,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash 986667656, now seen corresponding path program 1 times [2024-11-10 18:16:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:22,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500281334] [2024-11-10 18:16:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:22,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500281334] [2024-11-10 18:16:22,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500281334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:22,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:22,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:22,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572400512] [2024-11-10 18:16:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:22,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:22,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:22,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:22,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:16:22,344 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) [2024-11-10 18:16:22,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:22,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:16:22,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:22,483 INFO L124 PetriNetUnfolderBase]: 281/592 cut-off events. [2024-11-10 18:16:22,483 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-11-10 18:16:22,487 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. [2024-11-10 18:16:22,490 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 54 selfloop transitions, 12 changer transitions 2/79 dead transitions. [2024-11-10 18:16:22,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 558 flow [2024-11-10 18:16:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:16:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:16:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-11-10 18:16:22,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-11-10 18:16:22,492 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 300 flow. Second operand 5 states and 123 transitions. [2024-11-10 18:16:22,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 558 flow [2024-11-10 18:16:22,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 542 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 18:16:22,500 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 363 flow [2024-11-10 18:16:22,500 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} [2024-11-10 18:16:22,501 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-11-10 18:16:22,503 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 363 flow [2024-11-10 18:16:22,503 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) [2024-11-10 18:16:22,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:22,503 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] [2024-11-10 18:16:22,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:16:22,504 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)] === [2024-11-10 18:16:22,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1891147237, now seen corresponding path program 1 times [2024-11-10 18:16:22,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:22,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971189228] [2024-11-10 18:16:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:22,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:22,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971189228] [2024-11-10 18:16:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971189228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425878133] [2024-11-10 18:16:22,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:22,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:22,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:22,740 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) [2024-11-10 18:16:22,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:16:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:22,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 18:16:22,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:23,282 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:16:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425878133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:16:23,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:16:23,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-10 18:16:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141360530] [2024-11-10 18:16:23,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:16:23,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:16:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:16:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:16:23,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:16:23,596 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) [2024-11-10 18:16:23,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:23,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:16:23,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:24,434 INFO L124 PetriNetUnfolderBase]: 605/1232 cut-off events. [2024-11-10 18:16:24,434 INFO L125 PetriNetUnfolderBase]: For 4716/4716 co-relation queries the response was YES. [2024-11-10 18:16:24,440 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. [2024-11-10 18:16:24,448 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 116 selfloop transitions, 51 changer transitions 0/178 dead transitions. [2024-11-10 18:16:24,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 178 transitions, 1404 flow [2024-11-10 18:16:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 18:16:24,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 18:16:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 423 transitions. [2024-11-10 18:16:24,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5565789473684211 [2024-11-10 18:16:24,452 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 363 flow. Second operand 19 states and 423 transitions. [2024-11-10 18:16:24,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 178 transitions, 1404 flow [2024-11-10 18:16:24,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 1365 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-10 18:16:24,463 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 856 flow [2024-11-10 18:16:24,464 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} [2024-11-10 18:16:24,464 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2024-11-10 18:16:24,464 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 856 flow [2024-11-10 18:16:24,465 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) [2024-11-10 18:16:24,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:24,465 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] [2024-11-10 18:16:24,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:16:24,666 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 [2024-11-10 18:16:24,667 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)] === [2024-11-10 18:16:24,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:24,668 INFO L85 PathProgramCache]: Analyzing trace with hash -164791980, now seen corresponding path program 2 times [2024-11-10 18:16:24,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:24,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654143050] [2024-11-10 18:16:24,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:16:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:24,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654143050] [2024-11-10 18:16:24,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654143050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:24,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:24,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501985119] [2024-11-10 18:16:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:24,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:24,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-10 18:16:24,789 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) [2024-11-10 18:16:24,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:24,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-10 18:16:24,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:25,176 INFO L124 PetriNetUnfolderBase]: 1073/2376 cut-off events. [2024-11-10 18:16:25,177 INFO L125 PetriNetUnfolderBase]: For 11927/12021 co-relation queries the response was YES. [2024-11-10 18:16:25,185 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. [2024-11-10 18:16:25,198 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 104 selfloop transitions, 21 changer transitions 0/161 dead transitions. [2024-11-10 18:16:25,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 161 transitions, 1810 flow [2024-11-10 18:16:25,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:16:25,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:16:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-10 18:16:25,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-10 18:16:25,199 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 856 flow. Second operand 4 states and 113 transitions. [2024-11-10 18:16:25,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 161 transitions, 1810 flow [2024-11-10 18:16:25,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 161 transitions, 1693 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-11-10 18:16:25,228 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 1116 flow [2024-11-10 18:16:25,228 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} [2024-11-10 18:16:25,229 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 53 predicate places. [2024-11-10 18:16:25,229 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 1116 flow [2024-11-10 18:16:25,229 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) [2024-11-10 18:16:25,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:25,229 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] [2024-11-10 18:16:25,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:16:25,230 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)] === [2024-11-10 18:16:25,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -48421997, now seen corresponding path program 1 times [2024-11-10 18:16:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349595664] [2024-11-10 18:16:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:25,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:25,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:25,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349595664] [2024-11-10 18:16:25,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349595664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:25,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:25,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635652498] [2024-11-10 18:16:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:25,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:25,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:25,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-10 18:16:25,350 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) [2024-11-10 18:16:25,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:25,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-10 18:16:25,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:26,391 INFO L124 PetriNetUnfolderBase]: 2599/5350 cut-off events. [2024-11-10 18:16:26,392 INFO L125 PetriNetUnfolderBase]: For 28414/28653 co-relation queries the response was YES. [2024-11-10 18:16:26,415 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. [2024-11-10 18:16:26,450 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 142 selfloop transitions, 32 changer transitions 0/211 dead transitions. [2024-11-10 18:16:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 211 transitions, 2694 flow [2024-11-10 18:16:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:16:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:16:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-10 18:16:26,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-10 18:16:26,452 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 1116 flow. Second operand 4 states and 109 transitions. [2024-11-10 18:16:26,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 211 transitions, 2694 flow [2024-11-10 18:16:26,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 211 transitions, 2685 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:16:26,527 INFO L231 Difference]: Finished difference. Result has 96 places, 136 transitions, 1622 flow [2024-11-10 18:16:26,527 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} [2024-11-10 18:16:26,528 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2024-11-10 18:16:26,528 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 1622 flow [2024-11-10 18:16:26,529 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) [2024-11-10 18:16:26,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:26,529 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] [2024-11-10 18:16:26,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:16:26,529 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)] === [2024-11-10 18:16:26,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:26,530 INFO L85 PathProgramCache]: Analyzing trace with hash 844327261, now seen corresponding path program 1 times [2024-11-10 18:16:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484210381] [2024-11-10 18:16:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484210381] [2024-11-10 18:16:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484210381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348672634] [2024-11-10 18:16:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:26,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:26,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:26,761 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) [2024-11-10 18:16:26,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:16:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:26,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:16:26,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:26,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:16:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:27,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348672634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:16:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:16:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 18:16:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414994702] [2024-11-10 18:16:27,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:16:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:16:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:16:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:16:27,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:27,061 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) [2024-11-10 18:16:27,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:27,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:27,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:29,408 INFO L124 PetriNetUnfolderBase]: 5218/12077 cut-off events. [2024-11-10 18:16:29,409 INFO L125 PetriNetUnfolderBase]: For 83198/83599 co-relation queries the response was YES. [2024-11-10 18:16:29,472 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. [2024-11-10 18:16:29,539 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 296 selfloop transitions, 23 changer transitions 1/360 dead transitions. [2024-11-10 18:16:29,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 360 transitions, 5057 flow [2024-11-10 18:16:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:16:29,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:16:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-10 18:16:29,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-11-10 18:16:29,541 INFO L175 Difference]: Start difference. First operand has 96 places, 136 transitions, 1622 flow. Second operand 6 states and 178 transitions. [2024-11-10 18:16:29,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 360 transitions, 5057 flow [2024-11-10 18:16:29,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 360 transitions, 5057 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:29,748 INFO L231 Difference]: Finished difference. Result has 102 places, 152 transitions, 1755 flow [2024-11-10 18:16:29,749 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} [2024-11-10 18:16:29,749 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2024-11-10 18:16:29,749 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 152 transitions, 1755 flow [2024-11-10 18:16:29,750 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) [2024-11-10 18:16:29,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:29,750 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] [2024-11-10 18:16:29,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 18:16:29,950 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 [2024-11-10 18:16:29,951 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)] === [2024-11-10 18:16:29,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1638865653, now seen corresponding path program 2 times [2024-11-10 18:16:29,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:29,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912441030] [2024-11-10 18:16:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912441030] [2024-11-10 18:16:30,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912441030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:30,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016281456] [2024-11-10 18:16:30,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:16:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:30,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:30,386 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) [2024-11-10 18:16:30,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:16:30,461 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:16:30,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:16:30,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:16:30,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:30,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:16:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:30,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016281456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:16:30,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:16:30,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 18:16:30,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602978297] [2024-11-10 18:16:30,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:16:30,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:16:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:30,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:16:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:16:30,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:30,655 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) [2024-11-10 18:16:30,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:30,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:30,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:34,693 INFO L124 PetriNetUnfolderBase]: 9304/22015 cut-off events. [2024-11-10 18:16:34,694 INFO L125 PetriNetUnfolderBase]: For 157742/158560 co-relation queries the response was YES. [2024-11-10 18:16:34,879 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. [2024-11-10 18:16:35,017 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 350 selfloop transitions, 29 changer transitions 1/420 dead transitions. [2024-11-10 18:16:35,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 420 transitions, 5932 flow [2024-11-10 18:16:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:16:35,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:16:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-10 18:16:35,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-11-10 18:16:35,020 INFO L175 Difference]: Start difference. First operand has 102 places, 152 transitions, 1755 flow. Second operand 6 states and 182 transitions. [2024-11-10 18:16:35,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 420 transitions, 5932 flow [2024-11-10 18:16:35,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 420 transitions, 5862 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:35,642 INFO L231 Difference]: Finished difference. Result has 109 places, 174 transitions, 1930 flow [2024-11-10 18:16:35,643 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} [2024-11-10 18:16:35,643 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 71 predicate places. [2024-11-10 18:16:35,643 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 174 transitions, 1930 flow [2024-11-10 18:16:35,644 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) [2024-11-10 18:16:35,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:35,644 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] [2024-11-10 18:16:35,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:16:35,848 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 [2024-11-10 18:16:35,849 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)] === [2024-11-10 18:16:35,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:35,849 INFO L85 PathProgramCache]: Analyzing trace with hash -572509377, now seen corresponding path program 1 times [2024-11-10 18:16:35,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:35,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097414192] [2024-11-10 18:16:35,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:35,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:16:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097414192] [2024-11-10 18:16:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097414192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975481363] [2024-11-10 18:16:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:35,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:35,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:35,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:35,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-10 18:16:35,980 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) [2024-11-10 18:16:35,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:35,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-10 18:16:35,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:38,772 INFO L124 PetriNetUnfolderBase]: 6755/14881 cut-off events. [2024-11-10 18:16:38,773 INFO L125 PetriNetUnfolderBase]: For 101096/101346 co-relation queries the response was YES. [2024-11-10 18:16:38,857 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. [2024-11-10 18:16:38,934 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 167 selfloop transitions, 32 changer transitions 0/236 dead transitions. [2024-11-10 18:16:38,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 236 transitions, 2924 flow [2024-11-10 18:16:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:16:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:16:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2024-11-10 18:16:38,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-11-10 18:16:38,936 INFO L175 Difference]: Start difference. First operand has 109 places, 174 transitions, 1930 flow. Second operand 4 states and 105 transitions. [2024-11-10 18:16:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 236 transitions, 2924 flow [2024-11-10 18:16:39,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 236 transitions, 2888 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:39,251 INFO L231 Difference]: Finished difference. Result has 114 places, 159 transitions, 1835 flow [2024-11-10 18:16:39,251 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} [2024-11-10 18:16:39,252 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-11-10 18:16:39,252 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 159 transitions, 1835 flow [2024-11-10 18:16:39,252 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) [2024-11-10 18:16:39,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:39,253 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] [2024-11-10 18:16:39,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:16:39,253 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)] === [2024-11-10 18:16:39,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:39,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1083624947, now seen corresponding path program 3 times [2024-11-10 18:16:39,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:39,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490385550] [2024-11-10 18:16:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:39,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:39,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:39,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490385550] [2024-11-10 18:16:39,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490385550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:39,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758008784] [2024-11-10 18:16:39,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:16:39,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:39,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:39,463 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) [2024-11-10 18:16:39,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:16:39,541 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 18:16:39,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:16:39,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:16:39,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:39,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:16:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758008784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:16:39,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:16:39,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 18:16:39,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700022335] [2024-11-10 18:16:39,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:16:39,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:16:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:16:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:16:39,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:39,760 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) [2024-11-10 18:16:39,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:39,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:39,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:43,972 INFO L124 PetriNetUnfolderBase]: 8444/21186 cut-off events. [2024-11-10 18:16:43,972 INFO L125 PetriNetUnfolderBase]: For 186731/187504 co-relation queries the response was YES. [2024-11-10 18:16:44,073 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. [2024-11-10 18:16:44,154 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 321 selfloop transitions, 32 changer transitions 1/395 dead transitions. [2024-11-10 18:16:44,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 395 transitions, 5723 flow [2024-11-10 18:16:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:16:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:16:44,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-10 18:16:44,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-11-10 18:16:44,156 INFO L175 Difference]: Start difference. First operand has 114 places, 159 transitions, 1835 flow. Second operand 6 states and 182 transitions. [2024-11-10 18:16:44,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 395 transitions, 5723 flow [2024-11-10 18:16:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 395 transitions, 5723 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:44,897 INFO L231 Difference]: Finished difference. Result has 122 places, 184 transitions, 2119 flow [2024-11-10 18:16:44,898 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} [2024-11-10 18:16:44,898 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2024-11-10 18:16:44,899 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 184 transitions, 2119 flow [2024-11-10 18:16:44,899 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) [2024-11-10 18:16:44,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:44,899 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] [2024-11-10 18:16:44,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:16:45,103 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 [2024-11-10 18:16:45,104 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)] === [2024-11-10 18:16:45,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1708260567, now seen corresponding path program 4 times [2024-11-10 18:16:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414040341] [2024-11-10 18:16:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:45,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:45,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414040341] [2024-11-10 18:16:45,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414040341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:45,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875743191] [2024-11-10 18:16:45,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:16:45,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:45,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:45,284 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) [2024-11-10 18:16:45,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:16:45,351 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:16:45,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:16:45,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:16:45,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:45,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:16:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:16:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875743191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:16:45,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:16:45,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-10 18:16:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129233613] [2024-11-10 18:16:45,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:16:45,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:16:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:16:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:16:45,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-10 18:16:45,548 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) [2024-11-10 18:16:45,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:45,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-10 18:16:45,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:51,138 INFO L124 PetriNetUnfolderBase]: 10618/26457 cut-off events. [2024-11-10 18:16:51,139 INFO L125 PetriNetUnfolderBase]: For 247526/248680 co-relation queries the response was YES. [2024-11-10 18:16:51,420 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. [2024-11-10 18:16:51,557 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 310 selfloop transitions, 55 changer transitions 1/407 dead transitions. [2024-11-10 18:16:51,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 407 transitions, 5843 flow [2024-11-10 18:16:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:16:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:16:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 179 transitions. [2024-11-10 18:16:51,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7458333333333333 [2024-11-10 18:16:51,559 INFO L175 Difference]: Start difference. First operand has 122 places, 184 transitions, 2119 flow. Second operand 6 states and 179 transitions. [2024-11-10 18:16:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 407 transitions, 5843 flow [2024-11-10 18:16:53,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 407 transitions, 5813 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-10 18:16:53,134 INFO L231 Difference]: Finished difference. Result has 131 places, 218 transitions, 2610 flow [2024-11-10 18:16:53,135 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} [2024-11-10 18:16:53,135 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 93 predicate places. [2024-11-10 18:16:53,135 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 218 transitions, 2610 flow [2024-11-10 18:16:53,136 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) [2024-11-10 18:16:53,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:53,136 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] [2024-11-10 18:16:53,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:16:53,336 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 [2024-11-10 18:16:53,337 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)] === [2024-11-10 18:16:53,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash -620038734, now seen corresponding path program 1 times [2024-11-10 18:16:53,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:53,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432066508] [2024-11-10 18:16:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:16:53,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:53,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432066508] [2024-11-10 18:16:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432066508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:16:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:16:53,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 18:16:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601779783] [2024-11-10 18:16:53,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:16:53,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:16:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:16:53,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:16:53,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:16:53,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-11-10 18:16:53,478 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) [2024-11-10 18:16:53,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:16:53,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-11-10 18:16:53,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:55,910 INFO L124 PetriNetUnfolderBase]: 5197/12387 cut-off events. [2024-11-10 18:16:55,911 INFO L125 PetriNetUnfolderBase]: For 121637/122893 co-relation queries the response was YES. [2024-11-10 18:16:56,045 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. [2024-11-10 18:16:56,119 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 221 selfloop transitions, 28 changer transitions 0/287 dead transitions. [2024-11-10 18:16:56,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 287 transitions, 4074 flow [2024-11-10 18:16:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:16:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:16:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-10 18:16:56,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-10 18:16:56,121 INFO L175 Difference]: Start difference. First operand has 131 places, 218 transitions, 2610 flow. Second operand 4 states and 106 transitions. [2024-11-10 18:16:56,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 287 transitions, 4074 flow [2024-11-10 18:16:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 287 transitions, 4024 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-11-10 18:16:56,440 INFO L231 Difference]: Finished difference. Result has 135 places, 191 transitions, 2392 flow [2024-11-10 18:16:56,442 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} [2024-11-10 18:16:56,443 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 97 predicate places. [2024-11-10 18:16:56,443 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 191 transitions, 2392 flow [2024-11-10 18:16:56,443 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) [2024-11-10 18:16:56,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:16:56,443 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] [2024-11-10 18:16:56,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 18:16:56,444 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)] === [2024-11-10 18:16:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:16:56,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1232821032, now seen corresponding path program 5 times [2024-11-10 18:16:56,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:16:56,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565640588] [2024-11-10 18:16:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:16:56,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:16:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:16:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:56,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:16:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565640588] [2024-11-10 18:16:56,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565640588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:16:56,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077489003] [2024-11-10 18:16:56,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:16:56,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:16:56,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:16:56,953 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) [2024-11-10 18:16:56,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:16:57,074 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-10 18:16:57,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:16:57,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:16:57,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:16:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:16:57,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:17:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:17:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077489003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:17:10,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:17:10,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 20 [2024-11-10 18:17:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201257289] [2024-11-10 18:17:10,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:17:10,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-10 18:17:10,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:17:10,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-10 18:17:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=315, Unknown=3, NotChecked=0, Total=380 [2024-11-10 18:17:14,343 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 [] [2024-11-10 18:17:14,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-11-10 18:17:14,394 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) [2024-11-10 18:17:14,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:17:14,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-11-10 18:17:14,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:17:18,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 18:17:28,391 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 38 DAG size of output: 37 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-10 18:17:31,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 18:17:40,941 WARN L286 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 50 DAG size of output: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-10 18:17:44,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-10 18:17:49,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []