./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/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-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:47:29,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:47:29,950 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:47:29,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:47:29,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:47:29,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:47:29,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:47:29,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:47:29,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:47:29,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:47:29,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:47:29,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:47:29,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:47:29,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:47:29,983 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:47:29,983 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:47:29,983 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:47:29,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:47:29,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:47:29,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:47:29,984 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:47:29,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:47:29,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:29,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:47:29,986 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:47:29,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:47:29,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:47:29,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:47:29,987 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:47:29,987 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:47:29,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-22 21:47:30,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:47:30,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:47:30,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:47:30,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:47:30,252 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:47:30,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-22 21:47:31,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:47:31,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:47:31,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-22 21:47:31,595 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7674f507b/8ba1ef5c81bb47a7ac2ab451f62eb2a0/FLAGdb3632f08 [2024-11-22 21:47:32,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7674f507b/8ba1ef5c81bb47a7ac2ab451f62eb2a0 [2024-11-22 21:47:32,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:47:32,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:47:32,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:32,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:47:32,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:47:32,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36714acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32, skipping insertion in model container [2024-11-22 21:47:32,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:47:32,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:32,177 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:47:32,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:47:32,201 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:47:32,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32 WrapperNode [2024-11-22 21:47:32,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:47:32,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:32,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:47:32,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:47:32,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,226 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2024-11-22 21:47:32,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:47:32,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:47:32,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:47:32,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:47:32,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,243 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 21:47:32,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,248 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,250 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:47:32,250 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:47:32,250 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:47:32,251 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:47:32,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (1/1) ... [2024-11-22 21:47:32,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:47:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:32,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:47:32,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:47:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:47:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:47:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:47:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:47:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:47:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:47:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:47:32,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:47:32,312 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:47:32,375 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:47:32,377 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:47:32,504 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:47:32,504 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:47:32,602 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:47:32,602 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 21:47:32,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:32 BoogieIcfgContainer [2024-11-22 21:47:32,603 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:47:32,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:47:32,608 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:47:32,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:47:32,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:47:32" (1/3) ... [2024-11-22 21:47:32,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c182ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:32, skipping insertion in model container [2024-11-22 21:47:32,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:47:32" (2/3) ... [2024-11-22 21:47:32,612 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c182ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:47:32, skipping insertion in model container [2024-11-22 21:47:32,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:47:32" (3/3) ... [2024-11-22 21:47:32,613 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-22 21:47:32,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:47:32,626 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:47:32,626 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:47:32,657 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 21:47:32,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-22 21:47:32,717 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-22 21:47:32,717 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:47:32,719 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. [2024-11-22 21:47:32,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-22 21:47:32,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-22 21:47:32,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:47:32,733 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;@78a9ec7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:47:32,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-22 21:47:32,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:47:32,738 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-22 21:47:32,738 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 21:47:32,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:32,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:32,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:32,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1133802136, now seen corresponding path program 1 times [2024-11-22 21:47:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:32,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972410305] [2024-11-22 21:47:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:32,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:32,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:32,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972410305] [2024-11-22 21:47:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972410305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:32,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:47:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190760341] [2024-11-22 21:47:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:32,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:47:32,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:47:32,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:47:32,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 21:47:32,958 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) [2024-11-22 21:47:32,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:32,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 21:47:32,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:33,036 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-22 21:47:33,036 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-22 21:47:33,037 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. [2024-11-22 21:47:33,040 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-22 21:47:33,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-22 21:47:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:47:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:47:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-22 21:47:33,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-22 21:47:33,050 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-22 21:47:33,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-22 21:47:33,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 21:47:33,054 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-22 21:47:33,055 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-22 21:47:33,057 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-22 21:47:33,058 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-22 21:47:33,058 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) [2024-11-22 21:47:33,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:33,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:33,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:47:33,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:33,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash 930867415, now seen corresponding path program 1 times [2024-11-22 21:47:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067112595] [2024-11-22 21:47:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067112595] [2024-11-22 21:47:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067112595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612844208] [2024-11-22 21:47:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:33,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:33,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:33,189 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) [2024-11-22 21:47:33,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:33,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:33,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:33,311 INFO L124 PetriNetUnfolderBase]: 152/271 cut-off events. [2024-11-22 21:47:33,311 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-22 21:47:33,312 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. [2024-11-22 21:47:33,316 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 32 selfloop transitions, 9 changer transitions 2/44 dead transitions. [2024-11-22 21:47:33,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 44 transitions, 203 flow [2024-11-22 21:47:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:33,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-22 21:47:33,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-22 21:47:33,317 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 64 transitions. [2024-11-22 21:47:33,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 44 transitions, 203 flow [2024-11-22 21:47:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:33,320 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 122 flow [2024-11-22 21:47:33,321 INFO L260 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} [2024-11-22 21:47:33,321 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-22 21:47:33,322 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 122 flow [2024-11-22 21:47:33,322 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) [2024-11-22 21:47:33,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:33,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:33,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:47:33,323 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:33,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash -337367831, now seen corresponding path program 2 times [2024-11-22 21:47:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604764123] [2024-11-22 21:47:33,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:33,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:33,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604764123] [2024-11-22 21:47:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604764123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:33,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:33,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:47:33,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387003247] [2024-11-22 21:47:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:33,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:33,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:33,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:33,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:33,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:33,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:33,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:33,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:33,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:33,556 INFO L124 PetriNetUnfolderBase]: 180/318 cut-off events. [2024-11-22 21:47:33,556 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-22 21:47:33,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 318 events. 180/318 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1139 event pairs, 2 based on Foata normal form. 13/331 useless extension candidates. Maximal degree in co-relation 643. Up to 146 conditions per place. [2024-11-22 21:47:33,562 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-22 21:47:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 359 flow [2024-11-22 21:47:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:47:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:47:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-22 21:47:33,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:47:33,565 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 122 flow. Second operand 7 states and 84 transitions. [2024-11-22 21:47:33,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 359 flow [2024-11-22 21:47:33,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 357 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:33,569 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 206 flow [2024-11-22 21:47:33,569 INFO L260 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-22 21:47:33,570 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-22 21:47:33,570 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 206 flow [2024-11-22 21:47:33,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:33,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:33,571 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:33,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:47:33,571 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:33,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2085922199, now seen corresponding path program 3 times [2024-11-22 21:47:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:33,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97728536] [2024-11-22 21:47:33,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:33,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:33,585 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:47:33,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97728536] [2024-11-22 21:47:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97728536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:33,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546741806] [2024-11-22 21:47:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:33,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:33,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:33,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:33,643 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:33,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 206 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) [2024-11-22 21:47:33,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:33,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:33,725 INFO L124 PetriNetUnfolderBase]: 243/430 cut-off events. [2024-11-22 21:47:33,725 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-11-22 21:47:33,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 430 events. 243/430 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1559 event pairs, 86 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 980. Up to 194 conditions per place. [2024-11-22 21:47:33,730 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 48 selfloop transitions, 10 changer transitions 2/61 dead transitions. [2024-11-22 21:47:33,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 463 flow [2024-11-22 21:47:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:33,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-22 21:47:33,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:47:33,731 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 206 flow. Second operand 5 states and 60 transitions. [2024-11-22 21:47:33,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 463 flow [2024-11-22 21:47:33,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:47:33,735 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 257 flow [2024-11-22 21:47:33,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-22 21:47:33,735 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-22 21:47:33,736 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 257 flow [2024-11-22 21:47:33,736 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) [2024-11-22 21:47:33,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:33,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:33,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:47:33,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:33,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 533352207, now seen corresponding path program 4 times [2024-11-22 21:47:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63423052] [2024-11-22 21:47:33,737 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:33,744 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:33,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63423052] [2024-11-22 21:47:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63423052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950365976] [2024-11-22 21:47:33,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:33,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:33,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:33,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:33,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:47:33,816 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:33,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:33,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:33,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:33,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950365976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:33,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-22 21:47:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869826805] [2024-11-22 21:47:33,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:33,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:47:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:47:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:47:33,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:33,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:33,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:33,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:33,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:34,119 INFO L124 PetriNetUnfolderBase]: 320/559 cut-off events. [2024-11-22 21:47:34,123 INFO L125 PetriNetUnfolderBase]: For 1248/1248 co-relation queries the response was YES. [2024-11-22 21:47:34,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 559 events. 320/559 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2216 event pairs, 54 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1940. Up to 172 conditions per place. [2024-11-22 21:47:34,127 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 54 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2024-11-22 21:47:34,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 672 flow [2024-11-22 21:47:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:47:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:47:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-22 21:47:34,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-11-22 21:47:34,130 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 257 flow. Second operand 9 states and 98 transitions. [2024-11-22 21:47:34,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 672 flow [2024-11-22 21:47:34,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 639 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:34,138 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 472 flow [2024-11-22 21:47:34,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-22 21:47:34,140 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 30 predicate places. [2024-11-22 21:47:34,141 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 472 flow [2024-11-22 21:47:34,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:34,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:34,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:34,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:34,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:34,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:34,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1764661423, now seen corresponding path program 5 times [2024-11-22 21:47:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:34,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123009702] [2024-11-22 21:47:34,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:34,357 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:34,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:34,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:34,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:34,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123009702] [2024-11-22 21:47:34,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123009702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:34,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472174493] [2024-11-22 21:47:34,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:34,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:34,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:34,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:34,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:47:34,465 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:34,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:34,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 21:47:34,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:34,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:34,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472174493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:34,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:34,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 21:47:34,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502407905] [2024-11-22 21:47:34,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:34,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:47:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:47:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:47:34,543 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:34,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 472 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:34,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:34,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:34,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:34,677 INFO L124 PetriNetUnfolderBase]: 307/546 cut-off events. [2024-11-22 21:47:34,677 INFO L125 PetriNetUnfolderBase]: For 2022/2022 co-relation queries the response was YES. [2024-11-22 21:47:34,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 546 events. 307/546 cut-off events. For 2022/2022 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2198 event pairs, 67 based on Foata normal form. 13/559 useless extension candidates. Maximal degree in co-relation 2024. Up to 189 conditions per place. [2024-11-22 21:47:34,682 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 58 selfloop transitions, 30 changer transitions 1/90 dead transitions. [2024-11-22 21:47:34,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 90 transitions, 868 flow [2024-11-22 21:47:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:47:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:47:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-22 21:47:34,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-22 21:47:34,683 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 472 flow. Second operand 7 states and 83 transitions. [2024-11-22 21:47:34,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 90 transitions, 868 flow [2024-11-22 21:47:34,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 840 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:34,689 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 620 flow [2024-11-22 21:47:34,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-22 21:47:34,689 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 40 predicate places. [2024-11-22 21:47:34,689 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 620 flow [2024-11-22 21:47:34,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:34,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:34,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:34,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:34,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-22 21:47:34,894 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:34,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1753212447, now seen corresponding path program 6 times [2024-11-22 21:47:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:34,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709668198] [2024-11-22 21:47:34,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:34,901 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:47:34,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:34,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:34,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709668198] [2024-11-22 21:47:34,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709668198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:34,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:34,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:34,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39450033] [2024-11-22 21:47:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:34,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:34,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:34,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:34,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 620 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) [2024-11-22 21:47:34,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:34,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:34,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:35,042 INFO L124 PetriNetUnfolderBase]: 305/544 cut-off events. [2024-11-22 21:47:35,042 INFO L125 PetriNetUnfolderBase]: For 2515/2515 co-relation queries the response was YES. [2024-11-22 21:47:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 544 events. 305/544 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2278 event pairs, 101 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 2118. Up to 448 conditions per place. [2024-11-22 21:47:35,046 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 62 selfloop transitions, 10 changer transitions 2/75 dead transitions. [2024-11-22 21:47:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 848 flow [2024-11-22 21:47:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-22 21:47:35,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-22 21:47:35,047 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 620 flow. Second operand 5 states and 59 transitions. [2024-11-22 21:47:35,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 848 flow [2024-11-22 21:47:35,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 796 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-22 21:47:35,052 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 575 flow [2024-11-22 21:47:35,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-22 21:47:35,052 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2024-11-22 21:47:35,053 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 575 flow [2024-11-22 21:47:35,053 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) [2024-11-22 21:47:35,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:35,053 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:35,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:47:35,053 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:35,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash -477607017, now seen corresponding path program 7 times [2024-11-22 21:47:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705495288] [2024-11-22 21:47:35,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:47:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:35,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705495288] [2024-11-22 21:47:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705495288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:35,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:47:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:47:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935260775] [2024-11-22 21:47:35,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:35,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:47:35,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:47:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:47:35,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:35,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 575 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) [2024-11-22 21:47:35,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:35,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:35,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:35,189 INFO L124 PetriNetUnfolderBase]: 296/517 cut-off events. [2024-11-22 21:47:35,190 INFO L125 PetriNetUnfolderBase]: For 2269/2269 co-relation queries the response was YES. [2024-11-22 21:47:35,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 517 events. 296/517 cut-off events. For 2269/2269 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1972 event pairs, 97 based on Foata normal form. 2/515 useless extension candidates. Maximal degree in co-relation 1665. Up to 287 conditions per place. [2024-11-22 21:47:35,194 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 53 selfloop transitions, 18 changer transitions 2/74 dead transitions. [2024-11-22 21:47:35,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 792 flow [2024-11-22 21:47:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:47:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:47:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-22 21:47:35,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-22 21:47:35,195 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 575 flow. Second operand 5 states and 58 transitions. [2024-11-22 21:47:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 792 flow [2024-11-22 21:47:35,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 764 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-22 21:47:35,199 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 603 flow [2024-11-22 21:47:35,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-22 21:47:35,200 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2024-11-22 21:47:35,200 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 603 flow [2024-11-22 21:47:35,200 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) [2024-11-22 21:47:35,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:35,200 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:35,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:47:35,201 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:35,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -110425821, now seen corresponding path program 1 times [2024-11-22 21:47:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727515925] [2024-11-22 21:47:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727515925] [2024-11-22 21:47:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727515925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:35,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901742714] [2024-11-22 21:47:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:47:35,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:35,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:35,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:35,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:47:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:35,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 21:47:35,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:35,344 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:47:35,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901742714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:47:35,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:47:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2024-11-22 21:47:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472287109] [2024-11-22 21:47:35,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:47:35,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:47:35,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:47:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:47:35,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 21:47:35,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 603 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) [2024-11-22 21:47:35,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:35,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 21:47:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:35,449 INFO L124 PetriNetUnfolderBase]: 470/858 cut-off events. [2024-11-22 21:47:35,449 INFO L125 PetriNetUnfolderBase]: For 4227/4240 co-relation queries the response was YES. [2024-11-22 21:47:35,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 858 events. 470/858 cut-off events. For 4227/4240 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3915 event pairs, 85 based on Foata normal form. 12/865 useless extension candidates. Maximal degree in co-relation 3022. Up to 366 conditions per place. [2024-11-22 21:47:35,453 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 95 selfloop transitions, 5 changer transitions 18/125 dead transitions. [2024-11-22 21:47:35,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 125 transitions, 1420 flow [2024-11-22 21:47:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:47:35,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:47:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-22 21:47:35,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-22 21:47:35,455 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 603 flow. Second operand 4 states and 64 transitions. [2024-11-22 21:47:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 125 transitions, 1420 flow [2024-11-22 21:47:35,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 125 transitions, 1384 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:35,460 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 623 flow [2024-11-22 21:47:35,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=623, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-11-22 21:47:35,461 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2024-11-22 21:47:35,461 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 623 flow [2024-11-22 21:47:35,461 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) [2024-11-22 21:47:35,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:35,461 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:35,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:35,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:35,665 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:35,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1295144952, now seen corresponding path program 2 times [2024-11-22 21:47:35,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:35,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218379020] [2024-11-22 21:47:35,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:35,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:35,676 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:35,676 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:35,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218379020] [2024-11-22 21:47:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218379020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712006932] [2024-11-22 21:47:35,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:35,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:35,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:35,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:35,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:47:35,766 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:35,766 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:35,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:35,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:35,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712006932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:35,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 21:47:35,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267157636] [2024-11-22 21:47:35,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:35,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:47:35,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:47:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:47:35,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:35,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 623 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:35,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:35,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:35,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:36,305 INFO L124 PetriNetUnfolderBase]: 1036/1715 cut-off events. [2024-11-22 21:47:36,305 INFO L125 PetriNetUnfolderBase]: For 7900/7900 co-relation queries the response was YES. [2024-11-22 21:47:36,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7944 conditions, 1715 events. 1036/1715 cut-off events. For 7900/7900 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7729 event pairs, 40 based on Foata normal form. 56/1753 useless extension candidates. Maximal degree in co-relation 6469. Up to 548 conditions per place. [2024-11-22 21:47:36,315 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 131 selfloop transitions, 92 changer transitions 6/230 dead transitions. [2024-11-22 21:47:36,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 230 transitions, 2249 flow [2024-11-22 21:47:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 21:47:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-22 21:47:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 277 transitions. [2024-11-22 21:47:36,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2024-11-22 21:47:36,318 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 623 flow. Second operand 26 states and 277 transitions. [2024-11-22 21:47:36,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 230 transitions, 2249 flow [2024-11-22 21:47:36,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 230 transitions, 2249 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:47:36,327 INFO L231 Difference]: Finished difference. Result has 109 places, 119 transitions, 1524 flow [2024-11-22 21:47:36,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1524, PETRI_PLACES=109, PETRI_TRANSITIONS=119} [2024-11-22 21:47:36,329 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2024-11-22 21:47:36,329 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 119 transitions, 1524 flow [2024-11-22 21:47:36,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:36,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:36,329 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:36,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:36,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:36,534 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:36,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash 983359956, now seen corresponding path program 3 times [2024-11-22 21:47:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:36,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533027157] [2024-11-22 21:47:36,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:36,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:36,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:47:36,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:36,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533027157] [2024-11-22 21:47:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533027157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108863302] [2024-11-22 21:47:36,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:36,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:36,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:36,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:36,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:47:36,622 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:47:36,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:36,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:36,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:36,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108863302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:36,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:36,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-22 21:47:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195408126] [2024-11-22 21:47:36,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:36,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:47:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:47:36,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:47:36,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:36,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 119 transitions, 1524 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:36,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:36,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:36,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:37,131 INFO L124 PetriNetUnfolderBase]: 1418/2336 cut-off events. [2024-11-22 21:47:37,131 INFO L125 PetriNetUnfolderBase]: For 29621/29621 co-relation queries the response was YES. [2024-11-22 21:47:37,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14994 conditions, 2336 events. 1418/2336 cut-off events. For 29621/29621 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11250 event pairs, 129 based on Foata normal form. 18/2354 useless extension candidates. Maximal degree in co-relation 12054. Up to 798 conditions per place. [2024-11-22 21:47:37,151 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 145 selfloop transitions, 84 changer transitions 3/233 dead transitions. [2024-11-22 21:47:37,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 233 transitions, 3177 flow [2024-11-22 21:47:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:47:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-22 21:47:37,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-22 21:47:37,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-11-22 21:47:37,153 INFO L175 Difference]: Start difference. First operand has 109 places, 119 transitions, 1524 flow. Second operand 17 states and 185 transitions. [2024-11-22 21:47:37,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 233 transitions, 3177 flow [2024-11-22 21:47:37,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 233 transitions, 2944 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-11-22 21:47:37,258 INFO L231 Difference]: Finished difference. Result has 124 places, 154 transitions, 2053 flow [2024-11-22 21:47:37,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2053, PETRI_PLACES=124, PETRI_TRANSITIONS=154} [2024-11-22 21:47:37,260 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 98 predicate places. [2024-11-22 21:47:37,260 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 154 transitions, 2053 flow [2024-11-22 21:47:37,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:37,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:37,261 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:37,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:47:37,461 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 [2024-11-22 21:47:37,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:37,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:37,462 INFO L85 PathProgramCache]: Analyzing trace with hash -88330000, now seen corresponding path program 4 times [2024-11-22 21:47:37,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:37,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097007008] [2024-11-22 21:47:37,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:37,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:37,468 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:37,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:37,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:37,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097007008] [2024-11-22 21:47:37,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097007008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:37,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403043574] [2024-11-22 21:47:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:37,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:37,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:37,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:47:37,542 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:37,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:37,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:37,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:37,578 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403043574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:37,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-22 21:47:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586605385] [2024-11-22 21:47:37,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:37,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:47:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:47:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:47:37,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:37,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 154 transitions, 2053 flow. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:37,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:37,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:37,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:38,076 INFO L124 PetriNetUnfolderBase]: 1715/2831 cut-off events. [2024-11-22 21:47:38,076 INFO L125 PetriNetUnfolderBase]: For 46957/46957 co-relation queries the response was YES. [2024-11-22 21:47:38,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18968 conditions, 2831 events. 1715/2831 cut-off events. For 46957/46957 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14283 event pairs, 100 based on Foata normal form. 30/2861 useless extension candidates. Maximal degree in co-relation 15616. Up to 808 conditions per place. [2024-11-22 21:47:38,102 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 133 selfloop transitions, 132 changer transitions 24/290 dead transitions. [2024-11-22 21:47:38,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 290 transitions, 4126 flow [2024-11-22 21:47:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:47:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 21:47:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-22 21:47:38,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-22 21:47:38,103 INFO L175 Difference]: Start difference. First operand has 124 places, 154 transitions, 2053 flow. Second operand 15 states and 159 transitions. [2024-11-22 21:47:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 290 transitions, 4126 flow [2024-11-22 21:47:38,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 290 transitions, 3684 flow, removed 212 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:38,228 INFO L231 Difference]: Finished difference. Result has 143 places, 201 transitions, 2887 flow [2024-11-22 21:47:38,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2887, PETRI_PLACES=143, PETRI_TRANSITIONS=201} [2024-11-22 21:47:38,228 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 117 predicate places. [2024-11-22 21:47:38,228 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 201 transitions, 2887 flow [2024-11-22 21:47:38,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:38,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:38,229 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:38,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:38,433 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 [2024-11-22 21:47:38,434 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:38,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1826760788, now seen corresponding path program 5 times [2024-11-22 21:47:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757511018] [2024-11-22 21:47:38,434 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:38,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:38,444 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:47:38,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757511018] [2024-11-22 21:47:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757511018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853300679] [2024-11-22 21:47:38,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:38,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:38,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:38,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:47:38,522 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:47:38,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:38,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:38,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:38,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853300679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:38,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:38,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 21:47:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311903213] [2024-11-22 21:47:38,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:38,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 21:47:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 21:47:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-22 21:47:38,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:38,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 201 transitions, 2887 flow. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:38,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:38,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:38,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:39,295 INFO L124 PetriNetUnfolderBase]: 2099/3446 cut-off events. [2024-11-22 21:47:39,295 INFO L125 PetriNetUnfolderBase]: For 67155/67155 co-relation queries the response was YES. [2024-11-22 21:47:39,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23865 conditions, 3446 events. 2099/3446 cut-off events. For 67155/67155 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 18083 event pairs, 88 based on Foata normal form. 52/3498 useless extension candidates. Maximal degree in co-relation 22731. Up to 1007 conditions per place. [2024-11-22 21:47:39,362 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 166 selfloop transitions, 192 changer transitions 2/361 dead transitions. [2024-11-22 21:47:39,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 361 transitions, 5463 flow [2024-11-22 21:47:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 21:47:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-22 21:47:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 249 transitions. [2024-11-22 21:47:39,364 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45108695652173914 [2024-11-22 21:47:39,364 INFO L175 Difference]: Start difference. First operand has 143 places, 201 transitions, 2887 flow. Second operand 23 states and 249 transitions. [2024-11-22 21:47:39,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 361 transitions, 5463 flow [2024-11-22 21:47:39,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 361 transitions, 5284 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-11-22 21:47:39,462 INFO L231 Difference]: Finished difference. Result has 175 places, 254 transitions, 4404 flow [2024-11-22 21:47:39,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4404, PETRI_PLACES=175, PETRI_TRANSITIONS=254} [2024-11-22 21:47:39,463 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2024-11-22 21:47:39,463 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 254 transitions, 4404 flow [2024-11-22 21:47:39,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:39,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:39,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:39,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:39,663 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 [2024-11-22 21:47:39,664 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:39,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1313099182, now seen corresponding path program 6 times [2024-11-22 21:47:39,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478498109] [2024-11-22 21:47:39,665 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:39,669 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:47:39,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:39,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478498109] [2024-11-22 21:47:39,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478498109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:39,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897282201] [2024-11-22 21:47:39,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:39,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:39,719 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:47:39,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:47:39,752 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-22 21:47:39,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:39,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:39,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:39,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897282201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:39,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:39,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 21:47:39,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303034677] [2024-11-22 21:47:39,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:39,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:47:39,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:39,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:47:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:47:39,838 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:39,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 254 transitions, 4404 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) [2024-11-22 21:47:39,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:39,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:39,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:40,609 INFO L124 PetriNetUnfolderBase]: 2529/4185 cut-off events. [2024-11-22 21:47:40,609 INFO L125 PetriNetUnfolderBase]: For 123217/123217 co-relation queries the response was YES. [2024-11-22 21:47:40,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33326 conditions, 4185 events. 2529/4185 cut-off events. For 123217/123217 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 23271 event pairs, 110 based on Foata normal form. 40/4225 useless extension candidates. Maximal degree in co-relation 31512. Up to 1312 conditions per place. [2024-11-22 21:47:40,644 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 191 selfloop transitions, 214 changer transitions 2/408 dead transitions. [2024-11-22 21:47:40,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 408 transitions, 7426 flow [2024-11-22 21:47:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:47:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-22 21:47:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-22 21:47:40,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-22 21:47:40,645 INFO L175 Difference]: Start difference. First operand has 175 places, 254 transitions, 4404 flow. Second operand 16 states and 173 transitions. [2024-11-22 21:47:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 408 transitions, 7426 flow [2024-11-22 21:47:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 408 transitions, 6986 flow, removed 176 selfloop flow, removed 6 redundant places. [2024-11-22 21:47:40,904 INFO L231 Difference]: Finished difference. Result has 191 places, 312 transitions, 5986 flow [2024-11-22 21:47:40,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5986, PETRI_PLACES=191, PETRI_TRANSITIONS=312} [2024-11-22 21:47:40,904 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2024-11-22 21:47:40,904 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 312 transitions, 5986 flow [2024-11-22 21:47:40,905 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) [2024-11-22 21:47:40,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:40,905 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:40,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:41,105 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 [2024-11-22 21:47:41,105 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:41,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 550614130, now seen corresponding path program 7 times [2024-11-22 21:47:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877032738] [2024-11-22 21:47:41,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:47:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877032738] [2024-11-22 21:47:41,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877032738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:41,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171561387] [2024-11-22 21:47:41,166 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:47:41,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:41,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:41,168 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) [2024-11-22 21:47:41,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:47:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:41,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:41,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:41,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:41,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171561387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:41,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:41,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-22 21:47:41,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390677767] [2024-11-22 21:47:41,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:41,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:47:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:47:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:47:41,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:41,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 312 transitions, 5986 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) [2024-11-22 21:47:41,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:41,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:41,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:42,036 INFO L124 PetriNetUnfolderBase]: 2535/4207 cut-off events. [2024-11-22 21:47:42,037 INFO L125 PetriNetUnfolderBase]: For 138150/138150 co-relation queries the response was YES. [2024-11-22 21:47:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35237 conditions, 4207 events. 2535/4207 cut-off events. For 138150/138150 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 23702 event pairs, 312 based on Foata normal form. 8/4215 useless extension candidates. Maximal degree in co-relation 33281. Up to 1088 conditions per place. [2024-11-22 21:47:42,064 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 229 selfloop transitions, 159 changer transitions 4/393 dead transitions. [2024-11-22 21:47:42,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 393 transitions, 7857 flow [2024-11-22 21:47:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:47:42,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:47:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-11-22 21:47:42,066 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-11-22 21:47:42,066 INFO L175 Difference]: Start difference. First operand has 191 places, 312 transitions, 5986 flow. Second operand 13 states and 154 transitions. [2024-11-22 21:47:42,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 393 transitions, 7857 flow [2024-11-22 21:47:42,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 393 transitions, 7748 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-11-22 21:47:42,364 INFO L231 Difference]: Finished difference. Result has 197 places, 310 transitions, 6218 flow [2024-11-22 21:47:42,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5869, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6218, PETRI_PLACES=197, PETRI_TRANSITIONS=310} [2024-11-22 21:47:42,365 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 171 predicate places. [2024-11-22 21:47:42,365 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 310 transitions, 6218 flow [2024-11-22 21:47:42,365 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) [2024-11-22 21:47:42,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:42,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:42,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 21:47:42,566 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 [2024-11-22 21:47:42,566 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:42,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash -835767592, now seen corresponding path program 8 times [2024-11-22 21:47:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:42,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166133494] [2024-11-22 21:47:42,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:42,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:42,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:42,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166133494] [2024-11-22 21:47:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166133494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:42,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227054937] [2024-11-22 21:47:42,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:42,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:42,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:42,646 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) [2024-11-22 21:47:42,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:47:42,678 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:42,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:42,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:42,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:42,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:42,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227054937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:42,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:42,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 21:47:42,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071093804] [2024-11-22 21:47:42,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:42,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:47:42,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:47:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:47:42,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:42,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 310 transitions, 6218 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) [2024-11-22 21:47:42,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:42,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:42,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:43,729 INFO L124 PetriNetUnfolderBase]: 2760/4562 cut-off events. [2024-11-22 21:47:43,729 INFO L125 PetriNetUnfolderBase]: For 163468/163468 co-relation queries the response was YES. [2024-11-22 21:47:43,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39653 conditions, 4562 events. 2760/4562 cut-off events. For 163468/163468 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 25585 event pairs, 171 based on Foata normal form. 54/4616 useless extension candidates. Maximal degree in co-relation 37615. Up to 1261 conditions per place. [2024-11-22 21:47:43,763 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 173 selfloop transitions, 293 changer transitions 6/473 dead transitions. [2024-11-22 21:47:43,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 473 transitions, 9650 flow [2024-11-22 21:47:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:47:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:47:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2024-11-22 21:47:43,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2024-11-22 21:47:43,764 INFO L175 Difference]: Start difference. First operand has 197 places, 310 transitions, 6218 flow. Second operand 25 states and 259 transitions. [2024-11-22 21:47:43,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 473 transitions, 9650 flow [2024-11-22 21:47:44,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 473 transitions, 9351 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-11-22 21:47:44,154 INFO L231 Difference]: Finished difference. Result has 217 places, 368 transitions, 8394 flow [2024-11-22 21:47:44,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5921, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=8394, PETRI_PLACES=217, PETRI_TRANSITIONS=368} [2024-11-22 21:47:44,155 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-11-22 21:47:44,155 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 368 transitions, 8394 flow [2024-11-22 21:47:44,155 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) [2024-11-22 21:47:44,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:44,155 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:44,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:44,356 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 [2024-11-22 21:47:44,356 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-22 21:47:44,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash -968757680, now seen corresponding path program 9 times [2024-11-22 21:47:44,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:44,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789766494] [2024-11-22 21:47:44,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:44,362 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 21:47:44,363 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:44,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:44,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789766494] [2024-11-22 21:47:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789766494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770235325] [2024-11-22 21:47:44,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:47:44,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:44,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:44,407 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) [2024-11-22 21:47:44,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 21:47:44,438 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 21:47:44,438 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:44,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:44,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:44,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770235325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:44,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-22 21:47:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161197607] [2024-11-22 21:47:44,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:44,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:47:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:44,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:47:44,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:47:44,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:44,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 368 transitions, 8394 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) [2024-11-22 21:47:44,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:44,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:44,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:45,672 INFO L124 PetriNetUnfolderBase]: 3102/5171 cut-off events. [2024-11-22 21:47:45,673 INFO L125 PetriNetUnfolderBase]: For 211073/211073 co-relation queries the response was YES. [2024-11-22 21:47:45,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47863 conditions, 5171 events. 3102/5171 cut-off events. For 211073/211073 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 30193 event pairs, 139 based on Foata normal form. 30/5201 useless extension candidates. Maximal degree in co-relation 45010. Up to 1440 conditions per place. [2024-11-22 21:47:45,712 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 227 selfloop transitions, 318 changer transitions 6/552 dead transitions. [2024-11-22 21:47:45,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 552 transitions, 12525 flow [2024-11-22 21:47:45,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:47:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:47:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 263 transitions. [2024-11-22 21:47:45,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43833333333333335 [2024-11-22 21:47:45,714 INFO L175 Difference]: Start difference. First operand has 217 places, 368 transitions, 8394 flow. Second operand 25 states and 263 transitions. [2024-11-22 21:47:45,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 552 transitions, 12525 flow [2024-11-22 21:47:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 552 transitions, 11857 flow, removed 164 selfloop flow, removed 16 redundant places. [2024-11-22 21:47:46,323 INFO L231 Difference]: Finished difference. Result has 230 places, 417 transitions, 9974 flow [2024-11-22 21:47:46,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7824, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=9974, PETRI_PLACES=230, PETRI_TRANSITIONS=417} [2024-11-22 21:47:46,323 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 204 predicate places. [2024-11-22 21:47:46,323 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 417 transitions, 9974 flow [2024-11-22 21:47:46,324 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) [2024-11-22 21:47:46,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:46,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:46,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:46,524 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 [2024-11-22 21:47:46,524 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)] === [2024-11-22 21:47:46,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash 626728882, now seen corresponding path program 10 times [2024-11-22 21:47:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:46,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808621776] [2024-11-22 21:47:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:46,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:46,529 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:46,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:46,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808621776] [2024-11-22 21:47:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808621776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904918555] [2024-11-22 21:47:46,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:47:46,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:46,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:46,565 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) [2024-11-22 21:47:46,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 21:47:46,595 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:47:46,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:46,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:46,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:46,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:46,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904918555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:46,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:46,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 21:47:46,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721274481] [2024-11-22 21:47:46,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:46,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:47:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:47:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:47:46,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:46,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 417 transitions, 9974 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) [2024-11-22 21:47:46,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:46,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:46,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:47,859 INFO L124 PetriNetUnfolderBase]: 3499/5805 cut-off events. [2024-11-22 21:47:47,859 INFO L125 PetriNetUnfolderBase]: For 273219/273219 co-relation queries the response was YES. [2024-11-22 21:47:47,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55000 conditions, 5805 events. 3499/5805 cut-off events. For 273219/273219 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 34598 event pairs, 1243 based on Foata normal form. 18/5823 useless extension candidates. Maximal degree in co-relation 52680. Up to 4501 conditions per place. [2024-11-22 21:47:47,924 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 456 selfloop transitions, 62 changer transitions 2/521 dead transitions. [2024-11-22 21:47:47,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 521 transitions, 12686 flow [2024-11-22 21:47:47,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:47:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 21:47:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-11-22 21:47:47,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47115384615384615 [2024-11-22 21:47:47,925 INFO L175 Difference]: Start difference. First operand has 230 places, 417 transitions, 9974 flow. Second operand 13 states and 147 transitions. [2024-11-22 21:47:47,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 521 transitions, 12686 flow [2024-11-22 21:47:48,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 521 transitions, 12286 flow, removed 50 selfloop flow, removed 11 redundant places. [2024-11-22 21:47:49,002 INFO L231 Difference]: Finished difference. Result has 238 places, 443 transitions, 10435 flow [2024-11-22 21:47:49,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9623, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10435, PETRI_PLACES=238, PETRI_TRANSITIONS=443} [2024-11-22 21:47:49,002 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 212 predicate places. [2024-11-22 21:47:49,003 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 443 transitions, 10435 flow [2024-11-22 21:47:49,003 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) [2024-11-22 21:47:49,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:49,003 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:49,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 21:47:49,203 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 [2024-11-22 21:47:49,203 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)] === [2024-11-22 21:47:49,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -90176790, now seen corresponding path program 11 times [2024-11-22 21:47:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203500430] [2024-11-22 21:47:49,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:49,208 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:47:49,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203500430] [2024-11-22 21:47:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203500430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444726167] [2024-11-22 21:47:49,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:47:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:49,251 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) [2024-11-22 21:47:49,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 21:47:49,287 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:47:49,287 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:49,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:49,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:49,343 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:49,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444726167] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:49,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:49,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-22 21:47:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347630198] [2024-11-22 21:47:49,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:49,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:47:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:47:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:47:49,373 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:49,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 443 transitions, 10435 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) [2024-11-22 21:47:49,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:49,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:49,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:50,552 INFO L124 PetriNetUnfolderBase]: 3851/6372 cut-off events. [2024-11-22 21:47:50,552 INFO L125 PetriNetUnfolderBase]: For 324135/324135 co-relation queries the response was YES. [2024-11-22 21:47:50,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61924 conditions, 6372 events. 3851/6372 cut-off events. For 324135/324135 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38304 event pairs, 612 based on Foata normal form. 84/6456 useless extension candidates. Maximal degree in co-relation 59578. Up to 2740 conditions per place. [2024-11-22 21:47:50,609 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 343 selfloop transitions, 242 changer transitions 3/589 dead transitions. [2024-11-22 21:47:50,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 589 transitions, 14101 flow [2024-11-22 21:47:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:47:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-22 21:47:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2024-11-22 21:47:50,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-22 21:47:50,726 INFO L175 Difference]: Start difference. First operand has 238 places, 443 transitions, 10435 flow. Second operand 20 states and 221 transitions. [2024-11-22 21:47:50,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 589 transitions, 14101 flow [2024-11-22 21:47:51,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 589 transitions, 13911 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-11-22 21:47:51,908 INFO L231 Difference]: Finished difference. Result has 264 places, 477 transitions, 12248 flow [2024-11-22 21:47:51,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10266, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=12248, PETRI_PLACES=264, PETRI_TRANSITIONS=477} [2024-11-22 21:47:51,909 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 238 predicate places. [2024-11-22 21:47:51,909 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 477 transitions, 12248 flow [2024-11-22 21:47:51,909 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) [2024-11-22 21:47:51,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:51,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:51,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:52,109 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 [2024-11-22 21:47:52,110 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)] === [2024-11-22 21:47:52,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1179000324, now seen corresponding path program 12 times [2024-11-22 21:47:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:52,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289039003] [2024-11-22 21:47:52,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:52,115 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:47:52,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289039003] [2024-11-22 21:47:52,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289039003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:52,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935744336] [2024-11-22 21:47:52,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:47:52,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:52,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:52,162 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) [2024-11-22 21:47:52,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 21:47:52,193 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-22 21:47:52,194 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:52,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:52,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:52,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:52,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:52,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935744336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:52,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:52,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 21:47:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145547433] [2024-11-22 21:47:52,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:52,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:47:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:47:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:47:52,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:52,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 477 transitions, 12248 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) [2024-11-22 21:47:52,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:52,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:52,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:53,752 INFO L124 PetriNetUnfolderBase]: 4033/6665 cut-off events. [2024-11-22 21:47:53,752 INFO L125 PetriNetUnfolderBase]: For 421176/421176 co-relation queries the response was YES. [2024-11-22 21:47:53,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69866 conditions, 6665 events. 4033/6665 cut-off events. For 421176/421176 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 40215 event pairs, 602 based on Foata normal form. 54/6719 useless extension candidates. Maximal degree in co-relation 69290. Up to 2557 conditions per place. [2024-11-22 21:47:53,927 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 321 selfloop transitions, 271 changer transitions 2/595 dead transitions. [2024-11-22 21:47:53,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 595 transitions, 15512 flow [2024-11-22 21:47:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 21:47:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-22 21:47:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2024-11-22 21:47:53,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-22 21:47:53,931 INFO L175 Difference]: Start difference. First operand has 264 places, 477 transitions, 12248 flow. Second operand 18 states and 188 transitions. [2024-11-22 21:47:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 595 transitions, 15512 flow [2024-11-22 21:47:55,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 595 transitions, 15079 flow, removed 183 selfloop flow, removed 5 redundant places. [2024-11-22 21:47:55,392 INFO L231 Difference]: Finished difference. Result has 283 places, 501 transitions, 13643 flow [2024-11-22 21:47:55,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11898, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13643, PETRI_PLACES=283, PETRI_TRANSITIONS=501} [2024-11-22 21:47:55,392 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 257 predicate places. [2024-11-22 21:47:55,393 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 501 transitions, 13643 flow [2024-11-22 21:47:55,393 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) [2024-11-22 21:47:55,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:55,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:55,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 21:47:55,593 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 [2024-11-22 21:47:55,594 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)] === [2024-11-22 21:47:55,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:55,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1574166926, now seen corresponding path program 13 times [2024-11-22 21:47:55,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:55,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300049213] [2024-11-22 21:47:55,594 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:47:55,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:55,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:55,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300049213] [2024-11-22 21:47:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300049213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552526382] [2024-11-22 21:47:55,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:47:55,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:55,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:55,642 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) [2024-11-22 21:47:55,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 21:47:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:47:55,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:47:55,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:55,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552526382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:55,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:55,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-22 21:47:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482880259] [2024-11-22 21:47:55,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:55,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:47:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:55,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:47:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:47:55,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:47:55,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 501 transitions, 13643 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:55,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:55,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:47:55,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:47:57,351 INFO L124 PetriNetUnfolderBase]: 4030/6660 cut-off events. [2024-11-22 21:47:57,351 INFO L125 PetriNetUnfolderBase]: For 461383/461383 co-relation queries the response was YES. [2024-11-22 21:47:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72694 conditions, 6660 events. 4030/6660 cut-off events. For 461383/461383 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40319 event pairs, 1510 based on Foata normal form. 8/6668 useless extension candidates. Maximal degree in co-relation 72000. Up to 5399 conditions per place. [2024-11-22 21:47:57,412 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 485 selfloop transitions, 67 changer transitions 2/555 dead transitions. [2024-11-22 21:47:57,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 555 transitions, 15518 flow [2024-11-22 21:47:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:47:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:47:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-11-22 21:47:57,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-22 21:47:57,413 INFO L175 Difference]: Start difference. First operand has 283 places, 501 transitions, 13643 flow. Second operand 11 states and 126 transitions. [2024-11-22 21:47:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 555 transitions, 15518 flow [2024-11-22 21:47:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 555 transitions, 15237 flow, removed 109 selfloop flow, removed 13 redundant places. [2024-11-22 21:47:59,023 INFO L231 Difference]: Finished difference. Result has 280 places, 499 transitions, 13516 flow [2024-11-22 21:47:59,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13354, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13516, PETRI_PLACES=280, PETRI_TRANSITIONS=499} [2024-11-22 21:47:59,024 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 254 predicate places. [2024-11-22 21:47:59,024 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 499 transitions, 13516 flow [2024-11-22 21:47:59,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:47:59,024 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:47:59,024 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:47:59,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-22 21:47:59,225 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 [2024-11-22 21:47:59,225 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)] === [2024-11-22 21:47:59,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:47:59,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1848437104, now seen corresponding path program 14 times [2024-11-22 21:47:59,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:47:59,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017027650] [2024-11-22 21:47:59,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:59,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:47:59,232 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:59,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:47:59,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:47:59,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017027650] [2024-11-22 21:47:59,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017027650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:47:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871204379] [2024-11-22 21:47:59,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:47:59,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:47:59,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:47:59,283 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) [2024-11-22 21:47:59,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 21:47:59,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:47:59,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:47:59,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 21:47:59,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:47:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:59,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:47:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:47:59,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871204379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:47:59,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:47:59,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 7 [2024-11-22 21:47:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555525819] [2024-11-22 21:47:59,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:47:59,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 21:47:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:47:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 21:47:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-22 21:47:59,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-22 21:47:59,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 499 transitions, 13516 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) [2024-11-22 21:47:59,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:47:59,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-22 21:47:59,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:01,900 INFO L124 PetriNetUnfolderBase]: 6352/10814 cut-off events. [2024-11-22 21:48:01,900 INFO L125 PetriNetUnfolderBase]: For 698763/699420 co-relation queries the response was YES. [2024-11-22 21:48:01,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117223 conditions, 10814 events. 6352/10814 cut-off events. For 698763/699420 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 75895 event pairs, 587 based on Foata normal form. 178/10891 useless extension candidates. Maximal degree in co-relation 115420. Up to 3222 conditions per place. [2024-11-22 21:48:02,010 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1070 selfloop transitions, 10 changer transitions 143/1276 dead transitions. [2024-11-22 21:48:02,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1276 transitions, 38302 flow [2024-11-22 21:48:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:48:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:48:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-22 21:48:02,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-22 21:48:02,011 INFO L175 Difference]: Start difference. First operand has 280 places, 499 transitions, 13516 flow. Second operand 5 states and 83 transitions. [2024-11-22 21:48:02,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1276 transitions, 38302 flow [2024-11-22 21:48:05,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1276 transitions, 38056 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-22 21:48:05,558 INFO L231 Difference]: Finished difference. Result has 277 places, 495 transitions, 13234 flow [2024-11-22 21:48:05,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13411, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13234, PETRI_PLACES=277, PETRI_TRANSITIONS=495} [2024-11-22 21:48:05,559 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 251 predicate places. [2024-11-22 21:48:05,559 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 495 transitions, 13234 flow [2024-11-22 21:48:05,559 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) [2024-11-22 21:48:05,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:05,560 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:05,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-22 21:48:05,760 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 [2024-11-22 21:48:05,760 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)] === [2024-11-22 21:48:05,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:05,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1006449971, now seen corresponding path program 15 times [2024-11-22 21:48:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603954572] [2024-11-22 21:48:05,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:48:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:05,767 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:48:05,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:05,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603954572] [2024-11-22 21:48:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603954572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:48:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930760649] [2024-11-22 21:48:05,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:48:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:48:05,826 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) [2024-11-22 21:48:05,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 21:48:05,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-22 21:48:05,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:05,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:48:05,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:48:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:05,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:48:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:06,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930760649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:48:06,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:48:06,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-22 21:48:06,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471357840] [2024-11-22 21:48:06,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:48:06,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 21:48:06,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:06,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 21:48:06,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:48:06,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:48:06,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 495 transitions, 13234 flow. Second operand has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:48:06,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:06,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:48:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:10,053 INFO L124 PetriNetUnfolderBase]: 9772/15983 cut-off events. [2024-11-22 21:48:10,054 INFO L125 PetriNetUnfolderBase]: For 1164594/1164594 co-relation queries the response was YES. [2024-11-22 21:48:10,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181411 conditions, 15983 events. 9772/15983 cut-off events. For 1164594/1164594 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 108903 event pairs, 357 based on Foata normal form. 185/16168 useless extension candidates. Maximal degree in co-relation 179650. Up to 4435 conditions per place. [2024-11-22 21:48:10,227 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 441 selfloop transitions, 598 changer transitions 28/1068 dead transitions. [2024-11-22 21:48:10,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1068 transitions, 28522 flow [2024-11-22 21:48:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-22 21:48:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-22 21:48:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 403 transitions. [2024-11-22 21:48:10,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4418859649122807 [2024-11-22 21:48:10,228 INFO L175 Difference]: Start difference. First operand has 277 places, 495 transitions, 13234 flow. Second operand 38 states and 403 transitions. [2024-11-22 21:48:10,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1068 transitions, 28522 flow [2024-11-22 21:48:16,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 1068 transitions, 28364 flow, removed 79 selfloop flow, removed 0 redundant places. [2024-11-22 21:48:16,830 INFO L231 Difference]: Finished difference. Result has 332 places, 730 transitions, 22369 flow [2024-11-22 21:48:16,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13226, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=22369, PETRI_PLACES=332, PETRI_TRANSITIONS=730} [2024-11-22 21:48:16,830 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 306 predicate places. [2024-11-22 21:48:16,830 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 730 transitions, 22369 flow [2024-11-22 21:48:16,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0588235294117645) internal successors, (120), 17 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:48:16,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:16,831 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:16,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 21:48:17,031 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 [2024-11-22 21:48:17,031 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)] === [2024-11-22 21:48:17,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 81474871, now seen corresponding path program 16 times [2024-11-22 21:48:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:17,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342742988] [2024-11-22 21:48:17,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:48:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:17,036 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:48:17,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:17,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:17,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342742988] [2024-11-22 21:48:17,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342742988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:48:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32580303] [2024-11-22 21:48:17,082 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:48:17,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:17,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:48:17,084 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) [2024-11-22 21:48:17,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 21:48:17,113 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:48:17,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:17,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:48:17,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:48:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:17,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:48:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:17,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32580303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:48:17,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:48:17,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-22 21:48:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39165305] [2024-11-22 21:48:17,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:48:17,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:48:17,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:48:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:48:17,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:48:17,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 730 transitions, 22369 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) [2024-11-22 21:48:17,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:17,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:48:17,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:48:22,652 INFO L124 PetriNetUnfolderBase]: 11804/19308 cut-off events. [2024-11-22 21:48:22,652 INFO L125 PetriNetUnfolderBase]: For 1768702/1768702 co-relation queries the response was YES. [2024-11-22 21:48:22,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238378 conditions, 19308 events. 11804/19308 cut-off events. For 1768702/1768702 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 134889 event pairs, 592 based on Foata normal form. 71/19379 useless extension candidates. Maximal degree in co-relation 236289. Up to 6340 conditions per place. [2024-11-22 21:48:23,043 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 437 selfloop transitions, 854 changer transitions 73/1365 dead transitions. [2024-11-22 21:48:23,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 1365 transitions, 42507 flow [2024-11-22 21:48:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 21:48:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-22 21:48:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2024-11-22 21:48:23,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-11-22 21:48:23,045 INFO L175 Difference]: Start difference. First operand has 332 places, 730 transitions, 22369 flow. Second operand 19 states and 202 transitions. [2024-11-22 21:48:23,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 1365 transitions, 42507 flow [2024-11-22 21:48:39,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 1365 transitions, 40510 flow, removed 659 selfloop flow, removed 10 redundant places. [2024-11-22 21:48:39,643 INFO L231 Difference]: Finished difference. Result has 349 places, 1096 transitions, 36054 flow [2024-11-22 21:48:39,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21549, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=36054, PETRI_PLACES=349, PETRI_TRANSITIONS=1096} [2024-11-22 21:48:39,644 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 323 predicate places. [2024-11-22 21:48:39,644 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 1096 transitions, 36054 flow [2024-11-22 21:48:39,644 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) [2024-11-22 21:48:39,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:48:39,644 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:48:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-22 21:48:39,844 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 [2024-11-22 21:48:39,845 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)] === [2024-11-22 21:48:39,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:48:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1829267253, now seen corresponding path program 17 times [2024-11-22 21:48:39,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:48:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544825628] [2024-11-22 21:48:39,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:48:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:48:39,850 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-22 21:48:39,850 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:48:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544825628] [2024-11-22 21:48:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544825628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:48:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084257757] [2024-11-22 21:48:39,896 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:48:39,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:48:39,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:48:39,898 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) [2024-11-22 21:48:39,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 21:48:39,935 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-22 21:48:39,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:48:39,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:48:39,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:48:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:39,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:48:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:48:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084257757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:48:40,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:48:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-22 21:48:40,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465450943] [2024-11-22 21:48:40,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:48:40,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:48:40,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:48:40,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:48:40,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:48:40,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-22 21:48:40,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1096 transitions, 36054 flow. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 14 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:48:40,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:48:40,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-22 21:48:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand