./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 16:27:55,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 16:27:55,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 16:27:55,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 16:27:55,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 16:27:55,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 16:27:55,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 16:27:55,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 16:27:55,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 16:27:55,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 16:27:55,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 16:27:55,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 16:27:55,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 16:27:55,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 16:27:55,334 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 16:27:55,334 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 16:27:55,334 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 16:27:55,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 16:27:55,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 16:27:55,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 16:27:55,336 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 16:27:55,336 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 16:27:55,337 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 16:27:55,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 16:27:55,337 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 16:27:55,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 16:27:55,338 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 16:27:55,338 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 16:27:55,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 16:27:55,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 16:27:55,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 16:27:55,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 16:27:55,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 16:27:55,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:27:55,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 16:27:55,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 16:27:55,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 16:27:55,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 16:27:55,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 16:27:55,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 16:27:55,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 16:27:55,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 16:27:55,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-12 16:27:55,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 16:27:55,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 16:27:55,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 16:27:55,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 16:27:55,621 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 16:27:55,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-12 16:27:57,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 16:27:57,277 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 16:27:57,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-12 16:27:57,284 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74f89224/f4d111281db24f5c996cf9992ab090fa/FLAGac086107b [2024-11-12 16:27:57,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b74f89224/f4d111281db24f5c996cf9992ab090fa [2024-11-12 16:27:57,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 16:27:57,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 16:27:57,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 16:27:57,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 16:27:57,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 16:27:57,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:57,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59eac3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57, skipping insertion in model container [2024-11-12 16:27:57,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:57,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 16:27:57,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:27:57,914 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 16:27:57,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 16:27:57,950 INFO L204 MainTranslator]: Completed translation [2024-11-12 16:27:57,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57 WrapperNode [2024-11-12 16:27:57,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 16:27:57,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 16:27:57,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 16:27:57,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 16:27:57,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:57,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:57,995 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2024-11-12 16:27:57,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 16:27:57,996 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 16:27:57,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 16:27:57,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 16:27:58,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,018 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]. [2024-11-12 16:27:58,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 16:27:58,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 16:27:58,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 16:27:58,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 16:27:58,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (1/1) ... [2024-11-12 16:27:58,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 16:27:58,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:58,085 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) [2024-11-12 16:27:58,089 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 [2024-11-12 16:27:58,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 16:27:58,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 16:27:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 16:27:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 16:27:58,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 16:27:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 16:27:58,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 16:27:58,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 16:27:58,146 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 16:27:58,253 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 16:27:58,255 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 16:27:58,411 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 16:27:58,411 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 16:27:58,519 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 16:27:58,519 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 16:27:58,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:58 BoogieIcfgContainer [2024-11-12 16:27:58,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 16:27:58,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 16:27:58,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 16:27:58,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 16:27:58,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:27:57" (1/3) ... [2024-11-12 16:27:58,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322b7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:58, skipping insertion in model container [2024-11-12 16:27:58,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:27:57" (2/3) ... [2024-11-12 16:27:58,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322b7d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:27:58, skipping insertion in model container [2024-11-12 16:27:58,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:27:58" (3/3) ... [2024-11-12 16:27:58,538 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-12 16:27:58,553 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 16:27:58,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 16:27:58,554 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 16:27:58,597 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 16:27:58,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-12 16:27:58,658 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-12 16:27:58,658 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:27:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-12 16:27:58,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-12 16:27:58,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-12 16:27:58,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 16:27:58,685 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;@11131331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 16:27:58,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 16:27:58,694 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 16:27:58,694 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-12 16:27:58,694 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 16:27:58,695 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:58,695 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:58,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:58,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1133802136, now seen corresponding path program 1 times [2024-11-12 16:27:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145555409] [2024-11-12 16:27:58,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:58,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:58,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145555409] [2024-11-12 16:27:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145555409] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:58,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:58,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 16:27:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264670068] [2024-11-12 16:27:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:58,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 16:27:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:59,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 16:27:59,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 16:27:59,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 16:27:59,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-12 16:27:59,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:59,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 16:27:59,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:59,170 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-12 16:27:59,172 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-12 16:27:59,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 32 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-12 16:27:59,176 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-12 16:27:59,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-12 16:27:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 16:27:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 16:27:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-12 16:27:59,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-12 16:27:59,191 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-12 16:27:59,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-12 16:27:59,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-12 16:27:59,200 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-12 16:27:59,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-12 16:27:59,209 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-12 16:27:59,209 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-12 16:27:59,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-12 16:27:59,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:59,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:59,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 16:27:59,211 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:59,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash 930867415, now seen corresponding path program 1 times [2024-11-12 16:27:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734896395] [2024-11-12 16:27:59,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:59,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734896395] [2024-11-12 16:27:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734896395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:27:59,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:27:59,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:27:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776093920] [2024-11-12 16:27:59,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:27:59,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:27:59,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:27:59,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:27:59,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:27:59,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:27:59,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:59,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:27:59,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:27:59,534 INFO L124 PetriNetUnfolderBase]: 152/271 cut-off events. [2024-11-12 16:27:59,534 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-12 16:27:59,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 271 events. 152/271 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 59 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 179. Up to 185 conditions per place. [2024-11-12 16:27:59,537 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 32 selfloop transitions, 9 changer transitions 2/44 dead transitions. [2024-11-12 16:27:59,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 44 transitions, 203 flow [2024-11-12 16:27:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:27:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:27:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-12 16:27:59,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-12 16:27:59,539 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 64 transitions. [2024-11-12 16:27:59,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 44 transitions, 203 flow [2024-11-12 16:27:59,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 16:27:59,541 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 122 flow [2024-11-12 16:27:59,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2024-11-12 16:27:59,542 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-12 16:27:59,543 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 122 flow [2024-11-12 16:27:59,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:27:59,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:27:59,544 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:27:59,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 16:27:59,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:27:59,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:27:59,546 INFO L85 PathProgramCache]: Analyzing trace with hash -337367831, now seen corresponding path program 2 times [2024-11-12 16:27:59,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:27:59,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979166380] [2024-11-12 16:27:59,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:27:59,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:27:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:27:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:59,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:27:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979166380] [2024-11-12 16:27:59,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979166380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:27:59,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940822180] [2024-11-12 16:27:59,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:27:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:27:59,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:27:59,683 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) [2024-11-12 16:27:59,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 16:27:59,742 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:27:59,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:27:59,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:27:59,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:27:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:59,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:27:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:27:59,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940822180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:27:59,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:27:59,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-12 16:27:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150295079] [2024-11-12 16:27:59,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:27:59,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 16:27:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:27:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 16:27:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 16:27:59,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:27:59,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 122 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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) [2024-11-12 16:27:59,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:27:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:27:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:00,110 INFO L124 PetriNetUnfolderBase]: 180/318 cut-off events. [2024-11-12 16:28:00,110 INFO L125 PetriNetUnfolderBase]: For 175/175 co-relation queries the response was YES. [2024-11-12 16:28:00,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 318 events. 180/318 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1113 event pairs, 2 based on Foata normal form. 13/331 useless extension candidates. Maximal degree in co-relation 643. Up to 92 conditions per place. [2024-11-12 16:28:00,116 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 56 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2024-11-12 16:28:00,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 82 transitions, 483 flow [2024-11-12 16:28:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 16:28:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-12 16:28:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-11-12 16:28:00,119 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-12 16:28:00,119 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 122 flow. Second operand 12 states and 126 transitions. [2024-11-12 16:28:00,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 82 transitions, 483 flow [2024-11-12 16:28:00,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 82 transitions, 481 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-12 16:28:00,128 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 301 flow [2024-11-12 16:28:00,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=301, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-12 16:28:00,130 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2024-11-12 16:28:00,130 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 301 flow [2024-11-12 16:28:00,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 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) [2024-11-12 16:28:00,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:00,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:00,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 16:28:00,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:00,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:00,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:00,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2085922199, now seen corresponding path program 3 times [2024-11-12 16:28:00,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:00,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450553972] [2024-11-12 16:28:00,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:00,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450553972] [2024-11-12 16:28:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450553972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717871135] [2024-11-12 16:28:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:00,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:00,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:00,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:00,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:00,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:00,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:00,556 INFO L124 PetriNetUnfolderBase]: 243/430 cut-off events. [2024-11-12 16:28:00,556 INFO L125 PetriNetUnfolderBase]: For 726/726 co-relation queries the response was YES. [2024-11-12 16:28:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 430 events. 243/430 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1553 event pairs, 69 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1210. Up to 194 conditions per place. [2024-11-12 16:28:00,565 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 62 selfloop transitions, 14 changer transitions 2/79 dead transitions. [2024-11-12 16:28:00,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 79 transitions, 645 flow [2024-11-12 16:28:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-12 16:28:00,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-12 16:28:00,568 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 301 flow. Second operand 5 states and 60 transitions. [2024-11-12 16:28:00,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 79 transitions, 645 flow [2024-11-12 16:28:00,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 594 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-11-12 16:28:00,581 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 348 flow [2024-11-12 16:28:00,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=348, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-12 16:28:00,582 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2024-11-12 16:28:00,583 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 348 flow [2024-11-12 16:28:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:00,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:00,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:00,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 16:28:00,584 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:00,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash 533352207, now seen corresponding path program 4 times [2024-11-12 16:28:00,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:00,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903801971] [2024-11-12 16:28:00,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:00,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903801971] [2024-11-12 16:28:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903801971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:00,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326211844] [2024-11-12 16:28:00,769 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:28:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:00,770 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) [2024-11-12 16:28:00,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 16:28:00,822 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:28:00,822 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:00,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:28:00,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:00,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326211844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:00,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:28:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023028069] [2024-11-12 16:28:00,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:00,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:28:00,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:28:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:28:00,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:00,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 348 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-12 16:28:00,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:00,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:00,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:01,231 INFO L124 PetriNetUnfolderBase]: 346/603 cut-off events. [2024-11-12 16:28:01,232 INFO L125 PetriNetUnfolderBase]: For 1303/1303 co-relation queries the response was YES. [2024-11-12 16:28:01,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 603 events. 346/603 cut-off events. For 1303/1303 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2483 event pairs, 24 based on Foata normal form. 9/612 useless extension candidates. Maximal degree in co-relation 1949. Up to 174 conditions per place. [2024-11-12 16:28:01,238 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 70 selfloop transitions, 44 changer transitions 0/115 dead transitions. [2024-11-12 16:28:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 884 flow [2024-11-12 16:28:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:28:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:28:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-12 16:28:01,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-12 16:28:01,243 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 348 flow. Second operand 15 states and 159 transitions. [2024-11-12 16:28:01,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 884 flow [2024-11-12 16:28:01,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 844 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-12 16:28:01,255 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 608 flow [2024-11-12 16:28:01,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=608, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-11-12 16:28:01,257 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 43 predicate places. [2024-11-12 16:28:01,257 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 608 flow [2024-11-12 16:28:01,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-12 16:28:01,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:01,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:01,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 16:28:01,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:01,464 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:01,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:01,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1764661423, now seen corresponding path program 5 times [2024-11-12 16:28:01,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:01,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027120146] [2024-11-12 16:28:01,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:01,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027120146] [2024-11-12 16:28:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027120146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778953932] [2024-11-12 16:28:01,552 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:28:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:01,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:01,554 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) [2024-11-12 16:28:01,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 16:28:01,608 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:01,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:01,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-12 16:28:01,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:01,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778953932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:01,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-12 16:28:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727607737] [2024-11-12 16:28:01,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:01,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:28:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:28:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:28:01,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:01,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 608 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:01,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:01,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:01,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:01,888 INFO L124 PetriNetUnfolderBase]: 333/590 cut-off events. [2024-11-12 16:28:01,888 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-11-12 16:28:01,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 590 events. 333/590 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2435 event pairs, 70 based on Foata normal form. 13/603 useless extension candidates. Maximal degree in co-relation 2245. Up to 205 conditions per place. [2024-11-12 16:28:01,893 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 63 selfloop transitions, 40 changer transitions 1/105 dead transitions. [2024-11-12 16:28:01,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 105 transitions, 1041 flow [2024-11-12 16:28:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:28:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:28:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-11-12 16:28:01,895 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-12 16:28:01,895 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 608 flow. Second operand 8 states and 94 transitions. [2024-11-12 16:28:01,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 105 transitions, 1041 flow [2024-11-12 16:28:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 999 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-12 16:28:01,904 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 807 flow [2024-11-12 16:28:01,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=807, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-11-12 16:28:01,905 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-12 16:28:01,905 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 807 flow [2024-11-12 16:28:01,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:01,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:01,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:01,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 16:28:02,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:02,106 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:02,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1753212447, now seen corresponding path program 6 times [2024-11-12 16:28:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927179476] [2024-11-12 16:28:02,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927179476] [2024-11-12 16:28:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927179476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:02,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:02,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:02,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027483939] [2024-11-12 16:28:02,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:02,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:02,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:02,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:02,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 807 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:02,288 INFO L124 PetriNetUnfolderBase]: 331/588 cut-off events. [2024-11-12 16:28:02,289 INFO L125 PetriNetUnfolderBase]: For 2698/2698 co-relation queries the response was YES. [2024-11-12 16:28:02,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 588 events. 331/588 cut-off events. For 2698/2698 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2476 event pairs, 140 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 2361. Up to 492 conditions per place. [2024-11-12 16:28:02,295 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 69 selfloop transitions, 14 changer transitions 2/86 dead transitions. [2024-11-12 16:28:02,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 1002 flow [2024-11-12 16:28:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:02,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:02,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-12 16:28:02,296 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-12 16:28:02,296 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 807 flow. Second operand 5 states and 59 transitions. [2024-11-12 16:28:02,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 1002 flow [2024-11-12 16:28:02,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 888 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-11-12 16:28:02,305 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 710 flow [2024-11-12 16:28:02,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-11-12 16:28:02,306 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2024-11-12 16:28:02,307 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 710 flow [2024-11-12 16:28:02,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:02,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:02,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:02,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 16:28:02,307 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -477607017, now seen corresponding path program 7 times [2024-11-12 16:28:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078131115] [2024-11-12 16:28:02,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:02,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:02,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078131115] [2024-11-12 16:28:02,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078131115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:02,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:02,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 16:28:02,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884530028] [2024-11-12 16:28:02,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:02,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 16:28:02,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:02,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 16:28:02,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 16:28:02,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:02,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 710 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:02,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:02,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:02,473 INFO L124 PetriNetUnfolderBase]: 322/561 cut-off events. [2024-11-12 16:28:02,473 INFO L125 PetriNetUnfolderBase]: For 1896/1896 co-relation queries the response was YES. [2024-11-12 16:28:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 561 events. 322/561 cut-off events. For 1896/1896 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2214 event pairs, 102 based on Foata normal form. 2/563 useless extension candidates. Maximal degree in co-relation 1824. Up to 322 conditions per place. [2024-11-12 16:28:02,478 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 63 selfloop transitions, 21 changer transitions 2/87 dead transitions. [2024-11-12 16:28:02,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 921 flow [2024-11-12 16:28:02,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:02,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-12 16:28:02,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-12 16:28:02,479 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 710 flow. Second operand 5 states and 58 transitions. [2024-11-12 16:28:02,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 921 flow [2024-11-12 16:28:02,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 887 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-12 16:28:02,486 INFO L231 Difference]: Finished difference. Result has 73 places, 75 transitions, 712 flow [2024-11-12 16:28:02,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=73, PETRI_TRANSITIONS=75} [2024-11-12 16:28:02,486 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-12 16:28:02,486 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 75 transitions, 712 flow [2024-11-12 16:28:02,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-12 16:28:02,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:02,487 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:02,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 16:28:02,487 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:02,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -110425821, now seen corresponding path program 1 times [2024-11-12 16:28:02,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:02,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816163226] [2024-11-12 16:28:02,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:02,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:02,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816163226] [2024-11-12 16:28:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816163226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636628569] [2024-11-12 16:28:02,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:02,571 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) [2024-11-12 16:28:02,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 16:28:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:02,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 16:28:02,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:02,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 16:28:02,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636628569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:02,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 16:28:02,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2024-11-12 16:28:02,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428341059] [2024-11-12 16:28:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:02,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:28:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:28:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-12 16:28:02,664 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 16:28:02,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 712 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:02,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:02,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 16:28:02,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:02,837 INFO L124 PetriNetUnfolderBase]: 512/935 cut-off events. [2024-11-12 16:28:02,837 INFO L125 PetriNetUnfolderBase]: For 3838/3859 co-relation queries the response was YES. [2024-11-12 16:28:02,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 935 events. 512/935 cut-off events. For 3838/3859 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4460 event pairs, 86 based on Foata normal form. 12/940 useless extension candidates. Maximal degree in co-relation 2943. Up to 404 conditions per place. [2024-11-12 16:28:02,846 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 112 selfloop transitions, 5 changer transitions 21/145 dead transitions. [2024-11-12 16:28:02,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 145 transitions, 1619 flow [2024-11-12 16:28:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 16:28:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 16:28:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-12 16:28:02,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-12 16:28:02,848 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 712 flow. Second operand 4 states and 64 transitions. [2024-11-12 16:28:02,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 145 transitions, 1619 flow [2024-11-12 16:28:02,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 145 transitions, 1529 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 16:28:02,859 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 673 flow [2024-11-12 16:28:02,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=673, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-11-12 16:28:02,860 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-12 16:28:02,860 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 673 flow [2024-11-12 16:28:02,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:02,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:02,860 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:02,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 16:28:03,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:03,061 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:03,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -916412222, now seen corresponding path program 2 times [2024-11-12 16:28:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400065235] [2024-11-12 16:28:03,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:03,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400065235] [2024-11-12 16:28:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400065235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 16:28:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 16:28:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 16:28:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714966017] [2024-11-12 16:28:03,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:03,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 16:28:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 16:28:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 16:28:03,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:03,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 673 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-12 16:28:03,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:03,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:03,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:03,346 INFO L124 PetriNetUnfolderBase]: 765/1302 cut-off events. [2024-11-12 16:28:03,347 INFO L125 PetriNetUnfolderBase]: For 4579/4579 co-relation queries the response was YES. [2024-11-12 16:28:03,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5851 conditions, 1302 events. 765/1302 cut-off events. For 4579/4579 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6075 event pairs, 235 based on Foata normal form. 6/1308 useless extension candidates. Maximal degree in co-relation 4423. Up to 842 conditions per place. [2024-11-12 16:28:03,359 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 90 selfloop transitions, 26 changer transitions 2/119 dead transitions. [2024-11-12 16:28:03,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 1205 flow [2024-11-12 16:28:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 16:28:03,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-12 16:28:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-12 16:28:03,361 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-12 16:28:03,361 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 673 flow. Second operand 7 states and 86 transitions. [2024-11-12 16:28:03,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 1205 flow [2024-11-12 16:28:03,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 1205 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 16:28:03,375 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 843 flow [2024-11-12 16:28:03,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=843, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2024-11-12 16:28:03,376 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 55 predicate places. [2024-11-12 16:28:03,377 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 843 flow [2024-11-12 16:28:03,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2024-11-12 16:28:03,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:03,377 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:03,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 16:28:03,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:03,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1297505260, now seen corresponding path program 3 times [2024-11-12 16:28:03,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:03,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542079425] [2024-11-12 16:28:03,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:03,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:03,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542079425] [2024-11-12 16:28:03,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542079425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:03,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554507075] [2024-11-12 16:28:03,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:28:03,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:03,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:03,449 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) [2024-11-12 16:28:03,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 16:28:03,507 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:28:03,507 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:03,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:03,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:03,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:03,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554507075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:03,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:03,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-12 16:28:03,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959099289] [2024-11-12 16:28:03,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:03,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:28:03,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:03,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:28:03,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:28:03,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:03,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 843 flow. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 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) [2024-11-12 16:28:03,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:03,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:03,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:04,127 INFO L124 PetriNetUnfolderBase]: 1268/2115 cut-off events. [2024-11-12 16:28:04,128 INFO L125 PetriNetUnfolderBase]: For 10732/10732 co-relation queries the response was YES. [2024-11-12 16:28:04,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 2115 events. 1268/2115 cut-off events. For 10732/10732 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10298 event pairs, 126 based on Foata normal form. 18/2133 useless extension candidates. Maximal degree in co-relation 7928. Up to 674 conditions per place. [2024-11-12 16:28:04,150 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 125 selfloop transitions, 71 changer transitions 3/200 dead transitions. [2024-11-12 16:28:04,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 200 transitions, 2121 flow [2024-11-12 16:28:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 16:28:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-12 16:28:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-12 16:28:04,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-11-12 16:28:04,152 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 843 flow. Second operand 17 states and 185 transitions. [2024-11-12 16:28:04,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 200 transitions, 2121 flow [2024-11-12 16:28:04,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 200 transitions, 2078 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-12 16:28:04,176 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1386 flow [2024-11-12 16:28:04,177 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1386, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2024-11-12 16:28:04,177 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 73 predicate places. [2024-11-12 16:28:04,177 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1386 flow [2024-11-12 16:28:04,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 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) [2024-11-12 16:28:04,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:04,178 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:04,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 16:28:04,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-12 16:28:04,383 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:04,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -88330000, now seen corresponding path program 4 times [2024-11-12 16:28:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:04,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652501130] [2024-11-12 16:28:04,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:04,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:04,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652501130] [2024-11-12 16:28:04,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652501130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:04,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779151079] [2024-11-12 16:28:04,446 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:28:04,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:04,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:04,448 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) [2024-11-12 16:28:04,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 16:28:04,493 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:28:04,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:04,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:04,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:04,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779151079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:04,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:04,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-12 16:28:04,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769215988] [2024-11-12 16:28:04,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:04,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 16:28:04,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 16:28:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-12 16:28:04,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:04,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1386 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-12 16:28:04,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:04,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:04,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:05,174 INFO L124 PetriNetUnfolderBase]: 1467/2447 cut-off events. [2024-11-12 16:28:05,175 INFO L125 PetriNetUnfolderBase]: For 20343/20343 co-relation queries the response was YES. [2024-11-12 16:28:05,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13755 conditions, 2447 events. 1467/2447 cut-off events. For 20343/20343 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12304 event pairs, 84 based on Foata normal form. 30/2477 useless extension candidates. Maximal degree in co-relation 10860. Up to 767 conditions per place. [2024-11-12 16:28:05,206 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 106 selfloop transitions, 101 changer transitions 32/240 dead transitions. [2024-11-12 16:28:05,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 240 transitions, 2876 flow [2024-11-12 16:28:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 16:28:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 16:28:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-12 16:28:05,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-12 16:28:05,208 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1386 flow. Second operand 15 states and 159 transitions. [2024-11-12 16:28:05,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 240 transitions, 2876 flow [2024-11-12 16:28:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 240 transitions, 2696 flow, removed 81 selfloop flow, removed 2 redundant places. [2024-11-12 16:28:05,255 INFO L231 Difference]: Finished difference. Result has 118 places, 153 transitions, 1973 flow [2024-11-12 16:28:05,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1973, PETRI_PLACES=118, PETRI_TRANSITIONS=153} [2024-11-12 16:28:05,256 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-11-12 16:28:05,256 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 153 transitions, 1973 flow [2024-11-12 16:28:05,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-12 16:28:05,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:05,257 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:05,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:05,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:05,458 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:05,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1826760788, now seen corresponding path program 5 times [2024-11-12 16:28:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979927360] [2024-11-12 16:28:05,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:05,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979927360] [2024-11-12 16:28:05,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979927360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801657648] [2024-11-12 16:28:05,536 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:28:05,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:05,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:05,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 16:28:05,594 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:05,594 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:05,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:05,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:05,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:05,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801657648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:05,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 16:28:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301362371] [2024-11-12 16:28:05,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:05,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 16:28:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 16:28:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-12 16:28:05,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:05,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 153 transitions, 1973 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-12 16:28:05,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:05,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:05,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:06,581 INFO L124 PetriNetUnfolderBase]: 1658/2733 cut-off events. [2024-11-12 16:28:06,581 INFO L125 PetriNetUnfolderBase]: For 34505/34505 co-relation queries the response was YES. [2024-11-12 16:28:06,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16733 conditions, 2733 events. 1658/2733 cut-off events. For 34505/34505 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13695 event pairs, 60 based on Foata normal form. 80/2813 useless extension candidates. Maximal degree in co-relation 15975. Up to 865 conditions per place. [2024-11-12 16:28:06,614 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 158 selfloop transitions, 138 changer transitions 3/300 dead transitions. [2024-11-12 16:28:06,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 300 transitions, 3884 flow [2024-11-12 16:28:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 16:28:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 16:28:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 277 transitions. [2024-11-12 16:28:06,616 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2024-11-12 16:28:06,616 INFO L175 Difference]: Start difference. First operand has 118 places, 153 transitions, 1973 flow. Second operand 26 states and 277 transitions. [2024-11-12 16:28:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 300 transitions, 3884 flow [2024-11-12 16:28:06,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 300 transitions, 3729 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-11-12 16:28:06,684 INFO L231 Difference]: Finished difference. Result has 153 places, 188 transitions, 2899 flow [2024-11-12 16:28:06,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2899, PETRI_PLACES=153, PETRI_TRANSITIONS=188} [2024-11-12 16:28:06,685 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 127 predicate places. [2024-11-12 16:28:06,685 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 188 transitions, 2899 flow [2024-11-12 16:28:06,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 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) [2024-11-12 16:28:06,685 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:06,685 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:06,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 16:28:06,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:06,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:06,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -277283290, now seen corresponding path program 6 times [2024-11-12 16:28:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776016597] [2024-11-12 16:28:06,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776016597] [2024-11-12 16:28:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776016597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103693729] [2024-11-12 16:28:06,987 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:28:06,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:06,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:06,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:06,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 16:28:07,039 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:28:07,039 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:07,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:07,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:07,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:07,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103693729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:07,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:07,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-12 16:28:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730602325] [2024-11-12 16:28:07,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:07,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:28:07,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:28:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:28:07,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:07,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 188 transitions, 2899 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-12 16:28:07,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:07,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:07,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:07,995 INFO L124 PetriNetUnfolderBase]: 1965/3272 cut-off events. [2024-11-12 16:28:07,996 INFO L125 PetriNetUnfolderBase]: For 66304/66304 co-relation queries the response was YES. [2024-11-12 16:28:08,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23281 conditions, 3272 events. 1965/3272 cut-off events. For 66304/66304 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17394 event pairs, 86 based on Foata normal form. 30/3302 useless extension candidates. Maximal degree in co-relation 23167. Up to 1085 conditions per place. [2024-11-12 16:28:08,033 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 152 selfloop transitions, 152 changer transitions 2/307 dead transitions. [2024-11-12 16:28:08,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 307 transitions, 4888 flow [2024-11-12 16:28:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 16:28:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 16:28:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-12 16:28:08,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-12 16:28:08,037 INFO L175 Difference]: Start difference. First operand has 153 places, 188 transitions, 2899 flow. Second operand 16 states and 173 transitions. [2024-11-12 16:28:08,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 307 transitions, 4888 flow [2024-11-12 16:28:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 307 transitions, 4542 flow, removed 125 selfloop flow, removed 9 redundant places. [2024-11-12 16:28:08,206 INFO L231 Difference]: Finished difference. Result has 165 places, 224 transitions, 3862 flow [2024-11-12 16:28:08,206 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3862, PETRI_PLACES=165, PETRI_TRANSITIONS=224} [2024-11-12 16:28:08,207 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 139 predicate places. [2024-11-12 16:28:08,207 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 224 transitions, 3862 flow [2024-11-12 16:28:08,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-12 16:28:08,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:08,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:08,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 16:28:08,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-12 16:28:08,409 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:08,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash 550614130, now seen corresponding path program 7 times [2024-11-12 16:28:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:08,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213167261] [2024-11-12 16:28:08,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213167261] [2024-11-12 16:28:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213167261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33614450] [2024-11-12 16:28:08,532 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:28:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:08,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:08,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 16:28:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:08,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:08,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:08,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33614450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:08,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:08,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 16:28:08,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815382559] [2024-11-12 16:28:08,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:08,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 16:28:08,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:08,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 16:28:08,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-12 16:28:08,697 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:08,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 224 transitions, 3862 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-12 16:28:08,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:08,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:09,385 INFO L124 PetriNetUnfolderBase]: 1971/3294 cut-off events. [2024-11-12 16:28:09,385 INFO L125 PetriNetUnfolderBase]: For 78308/78308 co-relation queries the response was YES. [2024-11-12 16:28:09,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24744 conditions, 3294 events. 1971/3294 cut-off events. For 78308/78308 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17799 event pairs, 261 based on Foata normal form. 8/3302 useless extension candidates. Maximal degree in co-relation 23405. Up to 884 conditions per place. [2024-11-12 16:28:09,420 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 183 selfloop transitions, 108 changer transitions 3/295 dead transitions. [2024-11-12 16:28:09,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 295 transitions, 5181 flow [2024-11-12 16:28:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 16:28:09,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 16:28:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-11-12 16:28:09,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-11-12 16:28:09,422 INFO L175 Difference]: Start difference. First operand has 165 places, 224 transitions, 3862 flow. Second operand 13 states and 154 transitions. [2024-11-12 16:28:09,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 295 transitions, 5181 flow [2024-11-12 16:28:09,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 295 transitions, 5090 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-12 16:28:09,721 INFO L231 Difference]: Finished difference. Result has 172 places, 223 transitions, 4018 flow [2024-11-12 16:28:09,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3763, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4018, PETRI_PLACES=172, PETRI_TRANSITIONS=223} [2024-11-12 16:28:09,724 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 146 predicate places. [2024-11-12 16:28:09,724 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 223 transitions, 4018 flow [2024-11-12 16:28:09,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-12 16:28:09,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:09,725 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:09,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 16:28:09,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 16:28:09,926 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:09,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash -835767592, now seen corresponding path program 8 times [2024-11-12 16:28:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888638242] [2024-11-12 16:28:09,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:10,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:10,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888638242] [2024-11-12 16:28:10,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888638242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:10,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291575397] [2024-11-12 16:28:10,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:28:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:10,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:10,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:28:10,061 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:10,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:10,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:10,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:10,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291575397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:10,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-12 16:28:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171627590] [2024-11-12 16:28:10,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:10,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:28:10,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:10,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:28:10,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:28:10,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:10,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 223 transitions, 4018 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:10,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:10,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:10,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:11,158 INFO L124 PetriNetUnfolderBase]: 2406/3990 cut-off events. [2024-11-12 16:28:11,158 INFO L125 PetriNetUnfolderBase]: For 104652/104652 co-relation queries the response was YES. [2024-11-12 16:28:11,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31213 conditions, 3990 events. 2406/3990 cut-off events. For 104652/104652 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21887 event pairs, 150 based on Foata normal form. 54/4044 useless extension candidates. Maximal degree in co-relation 29316. Up to 1148 conditions per place. [2024-11-12 16:28:11,194 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 155 selfloop transitions, 253 changer transitions 6/415 dead transitions. [2024-11-12 16:28:11,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 415 transitions, 7617 flow [2024-11-12 16:28:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 16:28:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 16:28:11,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2024-11-12 16:28:11,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2024-11-12 16:28:11,196 INFO L175 Difference]: Start difference. First operand has 172 places, 223 transitions, 4018 flow. Second operand 25 states and 259 transitions. [2024-11-12 16:28:11,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 415 transitions, 7617 flow [2024-11-12 16:28:11,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 415 transitions, 7302 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-11-12 16:28:11,463 INFO L231 Difference]: Finished difference. Result has 191 places, 315 transitions, 6531 flow [2024-11-12 16:28:11,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3769, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6531, PETRI_PLACES=191, PETRI_TRANSITIONS=315} [2024-11-12 16:28:11,463 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2024-11-12 16:28:11,463 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 315 transitions, 6531 flow [2024-11-12 16:28:11,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:11,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:11,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:11,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 16:28:11,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 16:28:11,665 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:11,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash -378426996, now seen corresponding path program 9 times [2024-11-12 16:28:11,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:11,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038396662] [2024-11-12 16:28:11,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038396662] [2024-11-12 16:28:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038396662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994514148] [2024-11-12 16:28:11,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:28:11,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:11,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:11,814 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:11,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 16:28:11,865 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:28:11,865 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:11,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:11,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:11,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994514148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:12,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-12 16:28:12,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531265079] [2024-11-12 16:28:12,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:12,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:28:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:28:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:28:12,016 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:12,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 315 transitions, 6531 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:12,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:12,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:13,187 INFO L124 PetriNetUnfolderBase]: 3131/5215 cut-off events. [2024-11-12 16:28:13,187 INFO L125 PetriNetUnfolderBase]: For 164074/164074 co-relation queries the response was YES. [2024-11-12 16:28:13,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44323 conditions, 5215 events. 3131/5215 cut-off events. For 164074/164074 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 30529 event pairs, 126 based on Foata normal form. 30/5245 useless extension candidates. Maximal degree in co-relation 41630. Up to 1511 conditions per place. [2024-11-12 16:28:13,359 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 238 selfloop transitions, 319 changer transitions 5/563 dead transitions. [2024-11-12 16:28:13,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 563 transitions, 11848 flow [2024-11-12 16:28:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 16:28:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 16:28:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 300 transitions. [2024-11-12 16:28:13,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-11-12 16:28:13,364 INFO L175 Difference]: Start difference. First operand has 191 places, 315 transitions, 6531 flow. Second operand 29 states and 300 transitions. [2024-11-12 16:28:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 563 transitions, 11848 flow [2024-11-12 16:28:13,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 563 transitions, 11311 flow, removed 172 selfloop flow, removed 9 redundant places. [2024-11-12 16:28:13,944 INFO L231 Difference]: Finished difference. Result has 217 places, 417 transitions, 9651 flow [2024-11-12 16:28:13,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6149, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9651, PETRI_PLACES=217, PETRI_TRANSITIONS=417} [2024-11-12 16:28:13,944 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-11-12 16:28:13,944 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 417 transitions, 9651 flow [2024-11-12 16:28:13,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:13,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:13,945 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:13,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:14,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 16:28:14,146 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:14,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash 626728882, now seen corresponding path program 10 times [2024-11-12 16:28:14,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:14,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846677998] [2024-11-12 16:28:14,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:14,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:14,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846677998] [2024-11-12 16:28:14,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846677998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:14,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931555564] [2024-11-12 16:28:14,209 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:28:14,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:14,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:14,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 16:28:14,253 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:28:14,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:14,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:14,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:14,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931555564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:14,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:14,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-12 16:28:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763341321] [2024-11-12 16:28:14,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:14,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:28:14,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:28:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:28:14,372 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:14,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 417 transitions, 9651 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-12 16:28:14,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:14,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:15,674 INFO L124 PetriNetUnfolderBase]: 3533/5864 cut-off events. [2024-11-12 16:28:15,674 INFO L125 PetriNetUnfolderBase]: For 227297/227297 co-relation queries the response was YES. [2024-11-12 16:28:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52030 conditions, 5864 events. 3533/5864 cut-off events. For 227297/227297 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 34974 event pairs, 1254 based on Foata normal form. 18/5882 useless extension candidates. Maximal degree in co-relation 49703. Up to 4481 conditions per place. [2024-11-12 16:28:15,728 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 456 selfloop transitions, 70 changer transitions 2/529 dead transitions. [2024-11-12 16:28:15,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 529 transitions, 12258 flow [2024-11-12 16:28:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 16:28:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-12 16:28:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 172 transitions. [2024-11-12 16:28:15,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-12 16:28:15,730 INFO L175 Difference]: Start difference. First operand has 217 places, 417 transitions, 9651 flow. Second operand 16 states and 172 transitions. [2024-11-12 16:28:15,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 529 transitions, 12258 flow [2024-11-12 16:28:16,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 529 transitions, 12000 flow, removed 51 selfloop flow, removed 14 redundant places. [2024-11-12 16:28:16,765 INFO L231 Difference]: Finished difference. Result has 224 places, 450 transitions, 10311 flow [2024-11-12 16:28:16,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9413, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10311, PETRI_PLACES=224, PETRI_TRANSITIONS=450} [2024-11-12 16:28:16,766 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 198 predicate places. [2024-11-12 16:28:16,766 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 450 transitions, 10311 flow [2024-11-12 16:28:16,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-12 16:28:16,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:16,767 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:16,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 16:28:16,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 16:28:16,967 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:16,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:16,968 INFO L85 PathProgramCache]: Analyzing trace with hash -884777506, now seen corresponding path program 11 times [2024-11-12 16:28:16,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:16,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028891464] [2024-11-12 16:28:16,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:17,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:17,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028891464] [2024-11-12 16:28:17,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028891464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:17,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748561839] [2024-11-12 16:28:17,041 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:28:17,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:17,043 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:17,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 16:28:17,103 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:17,103 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:17,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:17,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:17,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:17,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748561839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:17,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:17,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-12 16:28:17,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293694215] [2024-11-12 16:28:17,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:17,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 16:28:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 16:28:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-12 16:28:17,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:17,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 450 transitions, 10311 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-12 16:28:17,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:17,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:17,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:18,558 INFO L124 PetriNetUnfolderBase]: 3880/6416 cut-off events. [2024-11-12 16:28:18,558 INFO L125 PetriNetUnfolderBase]: For 284213/284213 co-relation queries the response was YES. [2024-11-12 16:28:18,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59024 conditions, 6416 events. 3880/6416 cut-off events. For 284213/284213 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38466 event pairs, 624 based on Foata normal form. 84/6500 useless extension candidates. Maximal degree in co-relation 56720. Up to 2720 conditions per place. [2024-11-12 16:28:18,637 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 346 selfloop transitions, 245 changer transitions 3/595 dead transitions. [2024-11-12 16:28:18,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 595 transitions, 13787 flow [2024-11-12 16:28:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 16:28:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-12 16:28:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2024-11-12 16:28:18,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-12 16:28:18,640 INFO L175 Difference]: Start difference. First operand has 224 places, 450 transitions, 10311 flow. Second operand 20 states and 221 transitions. [2024-11-12 16:28:18,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 595 transitions, 13787 flow [2024-11-12 16:28:20,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 595 transitions, 13470 flow, removed 128 selfloop flow, removed 6 redundant places. [2024-11-12 16:28:20,140 INFO L231 Difference]: Finished difference. Result has 248 places, 482 transitions, 11951 flow [2024-11-12 16:28:20,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10024, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11951, PETRI_PLACES=248, PETRI_TRANSITIONS=482} [2024-11-12 16:28:20,141 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 222 predicate places. [2024-11-12 16:28:20,141 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 482 transitions, 11951 flow [2024-11-12 16:28:20,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-12 16:28:20,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:20,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:20,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:20,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:20,342 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:20,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:20,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1179000324, now seen corresponding path program 12 times [2024-11-12 16:28:20,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:20,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734011289] [2024-11-12 16:28:20,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:20,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734011289] [2024-11-12 16:28:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734011289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:20,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159606183] [2024-11-12 16:28:20,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 16:28:20,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:20,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:20,413 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:20,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-12 16:28:20,464 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-12 16:28:20,464 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:20,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:20,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:20,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159606183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:20,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:20,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-12 16:28:20,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806885882] [2024-11-12 16:28:20,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:20,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 16:28:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 16:28:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:28:20,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:20,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 482 transitions, 11951 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:20,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:20,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:20,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:22,134 INFO L124 PetriNetUnfolderBase]: 4062/6709 cut-off events. [2024-11-12 16:28:22,134 INFO L125 PetriNetUnfolderBase]: For 360675/360675 co-relation queries the response was YES. [2024-11-12 16:28:22,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65958 conditions, 6709 events. 4062/6709 cut-off events. For 360675/360675 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40328 event pairs, 610 based on Foata normal form. 54/6763 useless extension candidates. Maximal degree in co-relation 65409. Up to 2537 conditions per place. [2024-11-12 16:28:22,200 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 319 selfloop transitions, 274 changer transitions 2/596 dead transitions. [2024-11-12 16:28:22,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 596 transitions, 14988 flow [2024-11-12 16:28:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 16:28:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-12 16:28:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2024-11-12 16:28:22,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-12 16:28:22,201 INFO L175 Difference]: Start difference. First operand has 248 places, 482 transitions, 11951 flow. Second operand 18 states and 188 transitions. [2024-11-12 16:28:22,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 596 transitions, 14988 flow [2024-11-12 16:28:23,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 596 transitions, 14627 flow, removed 139 selfloop flow, removed 5 redundant places. [2024-11-12 16:28:23,799 INFO L231 Difference]: Finished difference. Result has 267 places, 505 transitions, 13376 flow [2024-11-12 16:28:23,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11654, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13376, PETRI_PLACES=267, PETRI_TRANSITIONS=505} [2024-11-12 16:28:23,800 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 241 predicate places. [2024-11-12 16:28:23,800 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 505 transitions, 13376 flow [2024-11-12 16:28:23,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:23,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:23,800 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:23,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:24,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:24,001 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:24,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:24,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1574166926, now seen corresponding path program 13 times [2024-11-12 16:28:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679726483] [2024-11-12 16:28:24,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:24,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679726483] [2024-11-12 16:28:24,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679726483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439093110] [2024-11-12 16:28:24,059 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 16:28:24,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:24,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:24,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-12 16:28:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:24,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 16:28:24,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:24,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 16:28:24,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439093110] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:24,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-12 16:28:24,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 13 [2024-11-12 16:28:24,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22584544] [2024-11-12 16:28:24,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 16:28:24,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 16:28:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 16:28:24,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-12 16:28:24,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:24,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 505 transitions, 13376 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-12 16:28:24,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:24,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:24,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:25,733 INFO L124 PetriNetUnfolderBase]: 4059/6704 cut-off events. [2024-11-12 16:28:25,733 INFO L125 PetriNetUnfolderBase]: For 393282/393282 co-relation queries the response was YES. [2024-11-12 16:28:25,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68611 conditions, 6704 events. 4059/6704 cut-off events. For 393282/393282 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40574 event pairs, 1507 based on Foata normal form. 8/6712 useless extension candidates. Maximal degree in co-relation 67945. Up to 5379 conditions per place. [2024-11-12 16:28:25,797 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 468 selfloop transitions, 70 changer transitions 1/540 dead transitions. [2024-11-12 16:28:25,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 540 transitions, 14864 flow [2024-11-12 16:28:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 16:28:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 16:28:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-11-12 16:28:25,798 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-11-12 16:28:25,798 INFO L175 Difference]: Start difference. First operand has 267 places, 505 transitions, 13376 flow. Second operand 8 states and 95 transitions. [2024-11-12 16:28:25,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 540 transitions, 14864 flow [2024-11-12 16:28:27,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 540 transitions, 14659 flow, removed 70 selfloop flow, removed 13 redundant places. [2024-11-12 16:28:27,020 INFO L231 Difference]: Finished difference. Result has 259 places, 502 transitions, 13299 flow [2024-11-12 16:28:27,020 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13133, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13299, PETRI_PLACES=259, PETRI_TRANSITIONS=502} [2024-11-12 16:28:27,020 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 233 predicate places. [2024-11-12 16:28:27,020 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 502 transitions, 13299 flow [2024-11-12 16:28:27,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-11-12 16:28:27,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:27,021 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:27,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:27,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:27,221 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:27,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:27,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1848437104, now seen corresponding path program 14 times [2024-11-12 16:28:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250190077] [2024-11-12 16:28:27,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250190077] [2024-11-12 16:28:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250190077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345647634] [2024-11-12 16:28:27,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 16:28:27,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:27,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:27,310 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:27,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-12 16:28:27,355 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 16:28:27,356 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:27,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 16:28:27,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:27,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345647634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:27,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 7 [2024-11-12 16:28:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691364056] [2024-11-12 16:28:27,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:27,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 16:28:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 16:28:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-12 16:28:27,433 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 16:28:27,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 502 transitions, 13299 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-12 16:28:27,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:27,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 16:28:27,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:29,846 INFO L124 PetriNetUnfolderBase]: 6338/10798 cut-off events. [2024-11-12 16:28:29,846 INFO L125 PetriNetUnfolderBase]: For 633658/634137 co-relation queries the response was YES. [2024-11-12 16:28:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111553 conditions, 10798 events. 6338/10798 cut-off events. For 633658/634137 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 75693 event pairs, 586 based on Foata normal form. 218/10905 useless extension candidates. Maximal degree in co-relation 109805. Up to 3228 conditions per place. [2024-11-12 16:28:30,166 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1085 selfloop transitions, 10 changer transitions 148/1293 dead transitions. [2024-11-12 16:28:30,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1293 transitions, 37946 flow [2024-11-12 16:28:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 16:28:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 16:28:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-12 16:28:30,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-12 16:28:30,168 INFO L175 Difference]: Start difference. First operand has 259 places, 502 transitions, 13299 flow. Second operand 5 states and 83 transitions. [2024-11-12 16:28:30,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1293 transitions, 37946 flow [2024-11-12 16:28:33,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 1293 transitions, 37576 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-11-12 16:28:33,264 INFO L231 Difference]: Finished difference. Result has 256 places, 498 transitions, 12991 flow [2024-11-12 16:28:33,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13157, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12991, PETRI_PLACES=256, PETRI_TRANSITIONS=498} [2024-11-12 16:28:33,265 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-11-12 16:28:33,265 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 498 transitions, 12991 flow [2024-11-12 16:28:33,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-12 16:28:33,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:33,265 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:33,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-12 16:28:33,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-12 16:28:33,466 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:33,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash 966257473, now seen corresponding path program 15 times [2024-11-12 16:28:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:33,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771709759] [2024-11-12 16:28:33,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:33,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:33,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:33,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771709759] [2024-11-12 16:28:33,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771709759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:33,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719710704] [2024-11-12 16:28:33,585 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:28:33,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:33,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:33,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-12 16:28:33,643 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 16:28:33,644 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:33,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 16:28:33,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:33,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719710704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:33,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-12 16:28:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540533922] [2024-11-12 16:28:33,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:33,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-12 16:28:33,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-12 16:28:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-12 16:28:33,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:33,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 498 transitions, 12991 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:33,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:33,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:33,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:38,068 INFO L124 PetriNetUnfolderBase]: 9834/16078 cut-off events. [2024-11-12 16:28:38,068 INFO L125 PetriNetUnfolderBase]: For 1018989/1018989 co-relation queries the response was YES. [2024-11-12 16:28:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172968 conditions, 16078 events. 9834/16078 cut-off events. For 1018989/1018989 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 109523 event pairs, 340 based on Foata normal form. 185/16263 useless extension candidates. Maximal degree in co-relation 171262. Up to 4504 conditions per place. [2024-11-12 16:28:38,288 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 465 selfloop transitions, 600 changer transitions 33/1099 dead transitions. [2024-11-12 16:28:38,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1099 transitions, 28419 flow [2024-11-12 16:28:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-12 16:28:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-12 16:28:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 460 transitions. [2024-11-12 16:28:38,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-12 16:28:38,294 INFO L175 Difference]: Start difference. First operand has 256 places, 498 transitions, 12991 flow. Second operand 44 states and 460 transitions. [2024-11-12 16:28:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1099 transitions, 28419 flow [2024-11-12 16:28:44,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1099 transitions, 28251 flow, removed 84 selfloop flow, removed 0 redundant places. [2024-11-12 16:28:44,269 INFO L231 Difference]: Finished difference. Result has 319 places, 734 transitions, 22004 flow [2024-11-12 16:28:44,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12983, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=22004, PETRI_PLACES=319, PETRI_TRANSITIONS=734} [2024-11-12 16:28:44,270 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 293 predicate places. [2024-11-12 16:28:44,270 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 734 transitions, 22004 flow [2024-11-12 16:28:44,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:44,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:28:44,271 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:28:44,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-12 16:28:44,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:44,471 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:28:44,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:28:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash 81474871, now seen corresponding path program 16 times [2024-11-12 16:28:44,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:28:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359247198] [2024-11-12 16:28:44,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:28:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:28:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:28:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:28:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359247198] [2024-11-12 16:28:44,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359247198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:28:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564500764] [2024-11-12 16:28:44,557 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:28:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:28:44,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:28:44,558 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:28:44,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-12 16:28:44,598 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:28:44,598 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:28:44,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 16:28:44,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:28:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:44,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:28:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:28:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564500764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:28:44,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:28:44,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-12 16:28:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802803708] [2024-11-12 16:28:44,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:28:44,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 16:28:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:28:44,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 16:28:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-12 16:28:44,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:28:44,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 734 transitions, 22004 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:28:44,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:28:44,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:28:44,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:28:50,388 INFO L124 PetriNetUnfolderBase]: 11854/19382 cut-off events. [2024-11-12 16:28:50,388 INFO L125 PetriNetUnfolderBase]: For 1588984/1588984 co-relation queries the response was YES. [2024-11-12 16:28:50,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228716 conditions, 19382 events. 11854/19382 cut-off events. For 1588984/1588984 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 135217 event pairs, 582 based on Foata normal form. 71/19453 useless extension candidates. Maximal degree in co-relation 226686. Up to 6382 conditions per place. [2024-11-12 16:28:50,667 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 437 selfloop transitions, 861 changer transitions 73/1372 dead transitions. [2024-11-12 16:28:50,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1372 transitions, 41426 flow [2024-11-12 16:28:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 16:28:50,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-12 16:28:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2024-11-12 16:28:50,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-11-12 16:28:50,668 INFO L175 Difference]: Start difference. First operand has 319 places, 734 transitions, 22004 flow. Second operand 19 states and 202 transitions. [2024-11-12 16:28:50,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1372 transitions, 41426 flow [2024-11-12 16:29:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1372 transitions, 39590 flow, removed 551 selfloop flow, removed 15 redundant places. [2024-11-12 16:29:01,939 INFO L231 Difference]: Finished difference. Result has 331 places, 1102 transitions, 35493 flow [2024-11-12 16:29:01,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21154, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=35493, PETRI_PLACES=331, PETRI_TRANSITIONS=1102} [2024-11-12 16:29:01,940 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2024-11-12 16:29:01,940 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 1102 transitions, 35493 flow [2024-11-12 16:29:01,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:29:01,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:29:01,940 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:29:01,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-12 16:29:02,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:29:02,141 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:29:02,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:29:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1829267253, now seen corresponding path program 17 times [2024-11-12 16:29:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:29:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227519936] [2024-11-12 16:29:02,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:29:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:29:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:29:02,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:29:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:29:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227519936] [2024-11-12 16:29:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227519936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:29:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488836488] [2024-11-12 16:29:02,228 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:29:02,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:29:02,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:29:02,229 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:29:02,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-12 16:29:02,272 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-12 16:29:02,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:29:02,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 16:29:02,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:29:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:29:02,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:29:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:29:02,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488836488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:29:02,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:29:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-12 16:29:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064483209] [2024-11-12 16:29:02,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:29:02,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 16:29:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:29:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 16:29:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-12 16:29:02,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-12 16:29:02,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1102 transitions, 35493 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 16:29:02,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:29:02,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-12 16:29:02,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:29:12,016 INFO L124 PetriNetUnfolderBase]: 14877/24110 cut-off events. [2024-11-12 16:29:12,016 INFO L125 PetriNetUnfolderBase]: For 2158369/2158369 co-relation queries the response was YES. [2024-11-12 16:29:12,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293515 conditions, 24110 events. 14877/24110 cut-off events. For 2158369/2158369 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 170718 event pairs, 1245 based on Foata normal form. 58/24168 useless extension candidates. Maximal degree in co-relation 291468. Up to 6748 conditions per place. [2024-11-12 16:29:12,497 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 719 selfloop transitions, 767 changer transitions 9/1496 dead transitions. [2024-11-12 16:29:12,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1496 transitions, 48053 flow [2024-11-12 16:29:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-12 16:29:12,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-12 16:29:12,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 238 transitions. [2024-11-12 16:29:12,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-12 16:29:12,498 INFO L175 Difference]: Start difference. First operand has 331 places, 1102 transitions, 35493 flow. Second operand 21 states and 238 transitions. [2024-11-12 16:29:12,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1496 transitions, 48053 flow