./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp2x4.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 f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:45:15,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:45:15,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:45:15,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:45:15,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:45:15,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:45:15,686 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:45:15,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:45:15,687 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:45:15,687 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:45:15,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:45:15,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:45:15,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:45:15,689 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:45:15,689 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:45:15,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:45:15,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:45:15,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:45:15,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:45:15,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:45:15,692 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:45:15,693 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:45:15,693 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:45:15,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:45:15,693 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:45:15,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:45:15,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:45:15,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:45:15,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:45:15,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:45:15,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:45:15,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 [2024-11-09 10:45:15,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:45:15,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:45:15,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:45:15,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:45:15,934 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:45:15,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-11-09 10:45:17,095 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:45:17,262 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:45:17,263 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-11-09 10:45:17,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188160553/71793e8cbe1b4364bda562faf17ca5b5/FLAGce3e4f44c [2024-11-09 10:45:17,665 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/188160553/71793e8cbe1b4364bda562faf17ca5b5 [2024-11-09 10:45:17,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:45:17,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:45:17,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:45:17,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:45:17,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:45:17,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4ae4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17, skipping insertion in model container [2024-11-09 10:45:17,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:45:17,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:45:17,852 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:45:17,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:45:17,891 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:45:17,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17 WrapperNode [2024-11-09 10:45:17,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:45:17,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:45:17,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:45:17,894 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:45:17,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,927 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-09 10:45:17,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:45:17,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:45:17,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:45:17,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:45:17,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,950 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]. [2024-11-09 10:45:17,950 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,950 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,957 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:45:17,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:45:17,958 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:45:17,958 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:45:17,959 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (1/1) ... [2024-11-09 10:45:17,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:45:17,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:45:17,989 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) [2024-11-09 10:45:17,992 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 [2024-11-09 10:45:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:45:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:45:18,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:45:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:45:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:45:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 10:45:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 10:45:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-09 10:45:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-09 10:45:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:45:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:45:18,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:45:18,031 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:45:18,114 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:45:18,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:45:18,294 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:45:18,294 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:45:18,404 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:45:18,404 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 10:45:18,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:18 BoogieIcfgContainer [2024-11-09 10:45:18,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:45:18,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:45:18,406 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:45:18,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:45:18,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:45:17" (1/3) ... [2024-11-09 10:45:18,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488c1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:18, skipping insertion in model container [2024-11-09 10:45:18,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:45:17" (2/3) ... [2024-11-09 10:45:18,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488c1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:45:18, skipping insertion in model container [2024-11-09 10:45:18,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:45:18" (3/3) ... [2024-11-09 10:45:18,415 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2024-11-09 10:45:18,428 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:45:18,429 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:45:18,429 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:45:18,494 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-09 10:45:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2024-11-09 10:45:18,554 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-09 10:45:18,555 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 10:45:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-09 10:45:18,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2024-11-09 10:45:18,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 29 transitions, 82 flow [2024-11-09 10:45:18,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:45:18,573 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;@6068c742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:45:18,573 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:45:18,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:45:18,582 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-09 10:45:18,582 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-09 10:45:18,582 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:18,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:18,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:18,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash -155691460, now seen corresponding path program 1 times [2024-11-09 10:45:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:18,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424974437] [2024-11-09 10:45:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:18,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:18,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:18,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424974437] [2024-11-09 10:45:18,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424974437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:45:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106121462] [2024-11-09 10:45:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:18,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:45:18,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:45:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:45:19,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:19,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-09 10:45:19,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:19,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:19,246 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-09 10:45:19,246 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 10:45:19,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5541 event pairs, 123 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-09 10:45:19,261 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-09 10:45:19,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-09 10:45:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:45:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:45:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-09 10:45:19,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-09 10:45:19,272 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 73 transitions. [2024-11-09 10:45:19,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-09 10:45:19,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-09 10:45:19,281 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-09 10:45:19,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-09 10:45:19,286 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-11-09 10:45:19,286 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-09 10:45:19,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-09 10:45:19,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:19,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:19,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:45:19,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:19,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1450891758, now seen corresponding path program 1 times [2024-11-09 10:45:19,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010901927] [2024-11-09 10:45:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:19,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:19,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:19,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010901927] [2024-11-09 10:45:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010901927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:19,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17519341] [2024-11-09 10:45:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:19,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:19,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:19,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:19,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:19,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:19,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:19,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:19,646 INFO L124 PetriNetUnfolderBase]: 1587/2032 cut-off events. [2024-11-09 10:45:19,646 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-11-09 10:45:19,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 2032 events. 1587/2032 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7016 event pairs, 112 based on Foata normal form. 34/2064 useless extension candidates. Maximal degree in co-relation 1261. Up to 839 conditions per place. [2024-11-09 10:45:19,660 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-09 10:45:19,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-09 10:45:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-09 10:45:19,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-11-09 10:45:19,664 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 120 transitions. [2024-11-09 10:45:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-09 10:45:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:19,666 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-09 10:45:19,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-09 10:45:19,668 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-11-09 10:45:19,668 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-09 10:45:19,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:19,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:19,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:19,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:45:19,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:19,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash -58212751, now seen corresponding path program 1 times [2024-11-09 10:45:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:19,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969262084] [2024-11-09 10:45:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:19,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:19,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:19,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969262084] [2024-11-09 10:45:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969262084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:19,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311440316] [2024-11-09 10:45:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:19,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:19,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:19,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:19,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:19,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:19,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:19,979 INFO L124 PetriNetUnfolderBase]: 1541/1986 cut-off events. [2024-11-09 10:45:19,980 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-11-09 10:45:19,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 1986 events. 1541/1986 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6946 event pairs, 94 based on Foata normal form. 46/2030 useless extension candidates. Maximal degree in co-relation 2813. Up to 810 conditions per place. [2024-11-09 10:45:19,990 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-09 10:45:19,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-11-09 10:45:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-09 10:45:19,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-11-09 10:45:19,993 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 118 transitions. [2024-11-09 10:45:19,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-11-09 10:45:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:45:19,997 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-11-09 10:45:19,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-09 10:45:19,999 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-11-09 10:45:19,999 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-11-09 10:45:19,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:19,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:19,999 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:19,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:45:19,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:20,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:20,000 INFO L85 PathProgramCache]: Analyzing trace with hash 131235292, now seen corresponding path program 1 times [2024-11-09 10:45:20,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:20,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560633758] [2024-11-09 10:45:20,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:20,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560633758] [2024-11-09 10:45:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560633758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:45:20,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575201307] [2024-11-09 10:45:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:20,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:45:20,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:45:20,100 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) [2024-11-09 10:45:20,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:45:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:20,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:45:20,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:45:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:20,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:45:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575201307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:45:20,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:45:20,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 10:45:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402900850] [2024-11-09 10:45:20,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:45:20,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:45:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:20,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:45:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:45:20,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:20,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-09 10:45:20,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:20,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:20,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:20,590 INFO L124 PetriNetUnfolderBase]: 1869/2497 cut-off events. [2024-11-09 10:45:20,591 INFO L125 PetriNetUnfolderBase]: For 4481/4481 co-relation queries the response was YES. [2024-11-09 10:45:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 2497 events. 1869/2497 cut-off events. For 4481/4481 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10091 event pairs, 284 based on Foata normal form. 64/2557 useless extension candidates. Maximal degree in co-relation 4039. Up to 1031 conditions per place. [2024-11-09 10:45:20,602 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-09 10:45:20,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 622 flow [2024-11-09 10:45:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:20,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-09 10:45:20,605 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-11-09 10:45:20,605 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 113 transitions. [2024-11-09 10:45:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 622 flow [2024-11-09 10:45:20,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:20,611 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 217 flow [2024-11-09 10:45:20,611 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-09 10:45:20,612 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2024-11-09 10:45:20,612 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 217 flow [2024-11-09 10:45:20,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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) [2024-11-09 10:45:20,612 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:20,612 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:20,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 10:45:20,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:45:20,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:20,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1229232657, now seen corresponding path program 1 times [2024-11-09 10:45:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593297693] [2024-11-09 10:45:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:20,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593297693] [2024-11-09 10:45:20,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593297693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:20,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:20,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629517263] [2024-11-09 10:45:20,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:20,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:20,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:20,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:20,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:20,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:20,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:21,098 INFO L124 PetriNetUnfolderBase]: 1836/2452 cut-off events. [2024-11-09 10:45:21,099 INFO L125 PetriNetUnfolderBase]: For 5141/5141 co-relation queries the response was YES. [2024-11-09 10:45:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 2452 events. 1836/2452 cut-off events. For 5141/5141 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9547 event pairs, 70 based on Foata normal form. 33/2481 useless extension candidates. Maximal degree in co-relation 4857. Up to 1016 conditions per place. [2024-11-09 10:45:21,115 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-09 10:45:21,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 687 flow [2024-11-09 10:45:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-09 10:45:21,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-11-09 10:45:21,118 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 217 flow. Second operand 5 states and 111 transitions. [2024-11-09 10:45:21,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 687 flow [2024-11-09 10:45:21,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:45:21,126 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 280 flow [2024-11-09 10:45:21,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-11-09 10:45:21,128 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2024-11-09 10:45:21,128 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 280 flow [2024-11-09 10:45:21,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:21,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:21,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:21,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:45:21,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:21,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash -817991374, now seen corresponding path program 2 times [2024-11-09 10:45:21,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:21,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978374242] [2024-11-09 10:45:21,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:21,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:21,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:21,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978374242] [2024-11-09 10:45:21,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978374242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:21,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:21,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:21,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956542840] [2024-11-09 10:45:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:21,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:21,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:21,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:21,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:21,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:21,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:21,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:21,378 INFO L124 PetriNetUnfolderBase]: 1653/2199 cut-off events. [2024-11-09 10:45:21,378 INFO L125 PetriNetUnfolderBase]: For 5407/5407 co-relation queries the response was YES. [2024-11-09 10:45:21,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 2199 events. 1653/2199 cut-off events. For 5407/5407 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8268 event pairs, 90 based on Foata normal form. 31/2226 useless extension candidates. Maximal degree in co-relation 5202. Up to 877 conditions per place. [2024-11-09 10:45:21,411 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 76 selfloop transitions, 9 changer transitions 4/94 dead transitions. [2024-11-09 10:45:21,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 696 flow [2024-11-09 10:45:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:21,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:21,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-09 10:45:21,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-11-09 10:45:21,413 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 280 flow. Second operand 5 states and 111 transitions. [2024-11-09 10:45:21,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 696 flow [2024-11-09 10:45:21,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 683 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:21,421 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 280 flow [2024-11-09 10:45:21,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-09 10:45:21,422 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-09 10:45:21,422 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 280 flow [2024-11-09 10:45:21,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:21,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:21,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:21,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:45:21,424 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:21,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1848087545, now seen corresponding path program 2 times [2024-11-09 10:45:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268121671] [2024-11-09 10:45:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:21,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:21,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268121671] [2024-11-09 10:45:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268121671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:45:21,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973793054] [2024-11-09 10:45:21,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:45:21,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:45:21,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:45:21,476 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) [2024-11-09 10:45:21,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:45:21,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:45:21,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:45:21,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:45:21,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:45:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:21,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:45:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973793054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:45:21,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:45:21,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-09 10:45:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042607409] [2024-11-09 10:45:21,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:45:21,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:45:21,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:45:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:45:21,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:21,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-09 10:45:21,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:21,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:21,958 INFO L124 PetriNetUnfolderBase]: 1591/2149 cut-off events. [2024-11-09 10:45:21,958 INFO L125 PetriNetUnfolderBase]: For 5641/5641 co-relation queries the response was YES. [2024-11-09 10:45:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9229 conditions, 2149 events. 1591/2149 cut-off events. For 5641/5641 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8554 event pairs, 257 based on Foata normal form. 62/2207 useless extension candidates. Maximal degree in co-relation 5857. Up to 1162 conditions per place. [2024-11-09 10:45:21,975 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-09 10:45:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 708 flow [2024-11-09 10:45:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-09 10:45:21,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-11-09 10:45:21,977 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 280 flow. Second operand 5 states and 108 transitions. [2024-11-09 10:45:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 708 flow [2024-11-09 10:45:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:21,983 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 321 flow [2024-11-09 10:45:21,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-09 10:45:21,984 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2024-11-09 10:45:21,984 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 321 flow [2024-11-09 10:45:21,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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) [2024-11-09 10:45:21,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:21,984 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:22,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:45:22,185 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,SelfDestructingSolverStorable6 [2024-11-09 10:45:22,186 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:22,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash -448556108, now seen corresponding path program 2 times [2024-11-09 10:45:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475514341] [2024-11-09 10:45:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:22,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:22,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:22,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475514341] [2024-11-09 10:45:22,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475514341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:22,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:22,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248195894] [2024-11-09 10:45:22,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:22,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:22,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:22,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:22,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:22,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:22,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:22,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:22,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:22,424 INFO L124 PetriNetUnfolderBase]: 1515/2055 cut-off events. [2024-11-09 10:45:22,425 INFO L125 PetriNetUnfolderBase]: For 6311/6327 co-relation queries the response was YES. [2024-11-09 10:45:22,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2055 events. 1515/2055 cut-off events. For 6311/6327 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8457 event pairs, 349 based on Foata normal form. 84/2137 useless extension candidates. Maximal degree in co-relation 8219. Up to 1174 conditions per place. [2024-11-09 10:45:22,436 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-09 10:45:22,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 1050 flow [2024-11-09 10:45:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-09 10:45:22,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-09 10:45:22,437 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 321 flow. Second operand 5 states and 119 transitions. [2024-11-09 10:45:22,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 1050 flow [2024-11-09 10:45:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 992 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-09 10:45:22,442 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 351 flow [2024-11-09 10:45:22,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-11-09 10:45:22,444 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2024-11-09 10:45:22,444 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 351 flow [2024-11-09 10:45:22,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:22,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:22,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:22,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:45:22,445 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:22,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1762802453, now seen corresponding path program 2 times [2024-11-09 10:45:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756148802] [2024-11-09 10:45:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756148802] [2024-11-09 10:45:22,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756148802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:45:22,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:45:22,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:45:22,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616801560] [2024-11-09 10:45:22,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:45:22,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:45:22,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:45:22,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:45:22,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:45:22,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:45:22,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:22,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:45:22,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:45:22,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:45:22,681 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-09 10:45:22,681 INFO L125 PetriNetUnfolderBase]: For 6552/6568 co-relation queries the response was YES. [2024-11-09 10:45:22,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 1987 events. 1447/1987 cut-off events. For 6552/6568 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8163 event pairs, 375 based on Foata normal form. 72/2057 useless extension candidates. Maximal degree in co-relation 8462. Up to 1150 conditions per place. [2024-11-09 10:45:22,694 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-09 10:45:22,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1043 flow [2024-11-09 10:45:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:45:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:45:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-09 10:45:22,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-11-09 10:45:22,695 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 351 flow. Second operand 5 states and 116 transitions. [2024-11-09 10:45:22,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1043 flow [2024-11-09 10:45:22,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 10:45:22,703 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-11-09 10:45:22,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-09 10:45:22,705 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-11-09 10:45:22,705 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-11-09 10:45:22,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-09 10:45:22,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:45:22,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:45:22,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:45:22,706 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:45:22,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:45:22,706 INFO L85 PathProgramCache]: Analyzing trace with hash 347724471, now seen corresponding path program 1 times [2024-11-09 10:45:22,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:45:22,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842654154] [2024-11-09 10:45:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:22,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:45:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:45:23,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:45:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842654154] [2024-11-09 10:45:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842654154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:45:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81450384] [2024-11-09 10:45:23,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:45:23,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:45:23,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:45:23,045 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) [2024-11-09 10:45:23,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:45:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:45:23,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 10:45:23,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:46:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:46:21,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:46:32,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:46:32,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81450384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:46:32,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:46:32,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-09 10:46:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761979068] [2024-11-09 10:46:32,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:46:32,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:46:32,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:46:32,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:46:32,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2024-11-09 10:46:32,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-09 10:46:32,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 14.0) internal successors, (196), 14 states have internal predecessors, (196), 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) [2024-11-09 10:46:32,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:46:32,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-09 10:46:32,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:46:38,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:46:43,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:46:47,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:47:01,555 WARN L286 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 59 DAG size of output: 32 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)