./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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/mult-dist.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 c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:46:20,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:46:20,554 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:46:20,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:46:20,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:46:20,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:46:20,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:46:20,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:46:20,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:46:20,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:46:20,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:46:20,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:46:20,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:46:20,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:46:20,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:46:20,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:46:20,591 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:46:20,591 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:46:20,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:46:20,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:46:20,594 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:46:20,594 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:46:20,594 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:46:20,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:46:20,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:46:20,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:46:20,595 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:46:20,595 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:46:20,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:46:20,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:46:20,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:46:20,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:46:20,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:46:20,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:46:20,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:46:20,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:46:20,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:46:20,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2024-11-19 09:46:20,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:46:20,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:46:20,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:46:20,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:46:20,835 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:46:20,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-19 09:46:22,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:46:22,241 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:46:22,241 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2024-11-19 09:46:22,247 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdbd371c/a7c51a02145045299dbdd304be19d9f5/FLAGb17797a54 [2024-11-19 09:46:22,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acdbd371c/a7c51a02145045299dbdd304be19d9f5 [2024-11-19 09:46:22,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:46:22,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:46:22,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:46:22,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:46:22,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:46:22,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4a3a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22, skipping insertion in model container [2024-11-19 09:46:22,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:46:22,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:46:22,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:46:22,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:46:22,509 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:46:22,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22 WrapperNode [2024-11-19 09:46:22,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:46:22,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:46:22,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:46:22,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:46:22,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,552 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-19 09:46:22,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:46:22,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:46:22,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:46:22,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:46:22,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,567 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,582 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]. [2024-11-19 09:46:22,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:46:22,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:46:22,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:46:22,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:46:22,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (1/1) ... [2024-11-19 09:46:22,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:46:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:22,629 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) [2024-11-19 09:46:22,633 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 [2024-11-19 09:46:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:46:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 09:46:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 09:46:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 09:46:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 09:46:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 09:46:22,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 09:46:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:46:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:46:22,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:46:22,675 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:46:22,767 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:46:22,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:46:22,932 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:46:22,933 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:46:23,047 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:46:23,048 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 09:46:23,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:23 BoogieIcfgContainer [2024-11-19 09:46:23,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:46:23,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:46:23,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:46:23,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:46:23,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:46:22" (1/3) ... [2024-11-19 09:46:23,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1bd700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:46:23, skipping insertion in model container [2024-11-19 09:46:23,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:22" (2/3) ... [2024-11-19 09:46:23,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1bd700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:46:23, skipping insertion in model container [2024-11-19 09:46:23,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:23" (3/3) ... [2024-11-19 09:46:23,055 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-11-19 09:46:23,069 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:46:23,070 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:46:23,070 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:46:23,109 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 09:46:23,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-11-19 09:46:23,158 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-11-19 09:46:23,158 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:46:23,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-19 09:46:23,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-11-19 09:46:23,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-11-19 09:46:23,174 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:46:23,180 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;@211aa372, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:46:23,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 09:46:23,188 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:46:23,188 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:46:23,188 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:46:23,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:23,189 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:23,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:23,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1812680405, now seen corresponding path program 1 times [2024-11-19 09:46:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769864984] [2024-11-19 09:46:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:23,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:23,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769864984] [2024-11-19 09:46:23,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769864984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:23,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:23,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:46:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672968519] [2024-11-19 09:46:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:23,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:46:23,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:23,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:46:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:46:23,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:23,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-19 09:46:23,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:23,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:23,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:23,804 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-19 09:46:23,804 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-19 09:46:23,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1786 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-19 09:46:23,814 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-19 09:46:23,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-19 09:46:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:46:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:46:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-19 09:46:23,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 09:46:23,827 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-11-19 09:46:23,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-19 09:46:23,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 09:46:23,831 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-19 09:46:23,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-19 09:46:23,835 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-11-19 09:46:23,835 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-19 09:46:23,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-11-19 09:46:23,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:23,837 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:23,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:46:23,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:23,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1505537698, now seen corresponding path program 1 times [2024-11-19 09:46:23,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:23,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948840934] [2024-11-19 09:46:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:24,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948840934] [2024-11-19 09:46:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948840934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:24,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 09:46:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783182080] [2024-11-19 09:46:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:24,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:24,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:46:24,041 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:24,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:24,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:24,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:24,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:24,309 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events. [2024-11-19 09:46:24,310 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-19 09:46:24,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2530 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place. [2024-11-19 09:46:24,316 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions. [2024-11-19 09:46:24,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow [2024-11-19 09:46:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-19 09:46:24,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-11-19 09:46:24,318 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 94 transitions. [2024-11-19 09:46:24,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow [2024-11-19 09:46:24,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:24,321 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow [2024-11-19 09:46:24,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2024-11-19 09:46:24,323 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-11-19 09:46:24,323 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow [2024-11-19 09:46:24,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:24,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:24,323 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:46:24,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:24,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1455921082, now seen corresponding path program 2 times [2024-11-19 09:46:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:24,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18698136] [2024-11-19 09:46:24,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:24,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:24,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:24,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18698136] [2024-11-19 09:46:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18698136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:24,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782464611] [2024-11-19 09:46:24,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:24,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:24,548 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) [2024-11-19 09:46:24,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 09:46:24,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:24,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:24,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:24,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:24,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782464611] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:25,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:25,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2024-11-19 09:46:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557667185] [2024-11-19 09:46:25,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:25,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:46:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:25,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:46:25,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:46:25,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:25,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:25,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:25,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:25,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:25,521 INFO L124 PetriNetUnfolderBase]: 849/1221 cut-off events. [2024-11-19 09:46:25,521 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-11-19 09:46:25,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 1221 events. 849/1221 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4445 event pairs, 231 based on Foata normal form. 6/1227 useless extension candidates. Maximal degree in co-relation 2238. Up to 454 conditions per place. [2024-11-19 09:46:25,529 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 90 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-11-19 09:46:25,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 112 transitions, 700 flow [2024-11-19 09:46:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:46:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:46:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-11-19 09:46:25,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-11-19 09:46:25,532 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 8 states and 131 transitions. [2024-11-19 09:46:25,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 112 transitions, 700 flow [2024-11-19 09:46:25,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 112 transitions, 678 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:25,537 INFO L231 Difference]: Finished difference. Result has 45 places, 54 transitions, 331 flow [2024-11-19 09:46:25,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=331, PETRI_PLACES=45, PETRI_TRANSITIONS=54} [2024-11-19 09:46:25,537 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-11-19 09:46:25,538 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 331 flow [2024-11-19 09:46:25,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:25,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:25,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:25,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:25,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:25,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:25,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:25,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1391237324, now seen corresponding path program 3 times [2024-11-19 09:46:25,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:25,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069509236] [2024-11-19 09:46:25,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:25,765 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:25,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:25,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069509236] [2024-11-19 09:46:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069509236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507309348] [2024-11-19 09:46:25,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:25,893 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) [2024-11-19 09:46:25,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 09:46:25,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:25,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:25,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:25,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:25,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:25,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507309348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:25,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:25,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2024-11-19 09:46:25,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126470899] [2024-11-19 09:46:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:25,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:25,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:25,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:25,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:46:25,991 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:25,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:25,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:25,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:25,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:26,252 INFO L124 PetriNetUnfolderBase]: 1031/1462 cut-off events. [2024-11-19 09:46:26,253 INFO L125 PetriNetUnfolderBase]: For 3745/3745 co-relation queries the response was YES. [2024-11-19 09:46:26,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5870 conditions, 1462 events. 1031/1462 cut-off events. For 3745/3745 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5419 event pairs, 368 based on Foata normal form. 2/1464 useless extension candidates. Maximal degree in co-relation 3820. Up to 1080 conditions per place. [2024-11-19 09:46:26,260 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 67 selfloop transitions, 28 changer transitions 3/99 dead transitions. [2024-11-19 09:46:26,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 99 transitions, 778 flow [2024-11-19 09:46:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-19 09:46:26,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-11-19 09:46:26,263 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 331 flow. Second operand 7 states and 93 transitions. [2024-11-19 09:46:26,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 99 transitions, 778 flow [2024-11-19 09:46:26,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 99 transitions, 758 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:26,278 INFO L231 Difference]: Finished difference. Result has 54 places, 70 transitions, 529 flow [2024-11-19 09:46:26,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=54, PETRI_TRANSITIONS=70} [2024-11-19 09:46:26,280 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-11-19 09:46:26,280 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 70 transitions, 529 flow [2024-11-19 09:46:26,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:26,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:26,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:26,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 09:46:26,484 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,SelfDestructingSolverStorable3 [2024-11-19 09:46:26,485 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:26,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1422138076, now seen corresponding path program 4 times [2024-11-19 09:46:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272670711] [2024-11-19 09:46:26,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:26,498 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:26,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272670711] [2024-11-19 09:46:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272670711] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113350109] [2024-11-19 09:46:26,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:26,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:26,598 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) [2024-11-19 09:46:26,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 09:46:26,656 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:26,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:26,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:46:26,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:26,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:27,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113350109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:27,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:27,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-11-19 09:46:27,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395544520] [2024-11-19 09:46:27,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:27,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:46:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:46:27,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:46:27,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:27,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 70 transitions, 529 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:27,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:27,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:27,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:28,054 INFO L124 PetriNetUnfolderBase]: 1625/2434 cut-off events. [2024-11-19 09:46:28,054 INFO L125 PetriNetUnfolderBase]: For 8460/8460 co-relation queries the response was YES. [2024-11-19 09:46:28,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10777 conditions, 2434 events. 1625/2434 cut-off events. For 8460/8460 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11050 event pairs, 205 based on Foata normal form. 24/2458 useless extension candidates. Maximal degree in co-relation 6881. Up to 832 conditions per place. [2024-11-19 09:46:28,070 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 198 selfloop transitions, 79 changer transitions 0/278 dead transitions. [2024-11-19 09:46:28,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 278 transitions, 2239 flow [2024-11-19 09:46:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 09:46:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 09:46:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 321 transitions. [2024-11-19 09:46:28,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-11-19 09:46:28,072 INFO L175 Difference]: Start difference. First operand has 54 places, 70 transitions, 529 flow. Second operand 23 states and 321 transitions. [2024-11-19 09:46:28,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 278 transitions, 2239 flow [2024-11-19 09:46:28,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 278 transitions, 2153 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:28,093 INFO L231 Difference]: Finished difference. Result has 93 places, 126 transitions, 1253 flow [2024-11-19 09:46:28,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1253, PETRI_PLACES=93, PETRI_TRANSITIONS=126} [2024-11-19 09:46:28,094 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-11-19 09:46:28,094 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 126 transitions, 1253 flow [2024-11-19 09:46:28,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:28,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:28,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:28,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 09:46:28,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:28,296 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:28,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:28,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1221583312, now seen corresponding path program 1 times [2024-11-19 09:46:28,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:28,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599394333] [2024-11-19 09:46:28,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:28,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599394333] [2024-11-19 09:46:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599394333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 09:46:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141785102] [2024-11-19 09:46:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:28,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:46:28,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:28,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 126 transitions, 1253 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:28,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:28,752 INFO L124 PetriNetUnfolderBase]: 1701/2541 cut-off events. [2024-11-19 09:46:28,752 INFO L125 PetriNetUnfolderBase]: For 24645/24645 co-relation queries the response was YES. [2024-11-19 09:46:28,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14948 conditions, 2541 events. 1701/2541 cut-off events. For 24645/24645 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11697 event pairs, 535 based on Foata normal form. 4/2545 useless extension candidates. Maximal degree in co-relation 12150. Up to 1545 conditions per place. [2024-11-19 09:46:28,773 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 152 selfloop transitions, 45 changer transitions 5/203 dead transitions. [2024-11-19 09:46:28,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 203 transitions, 2337 flow [2024-11-19 09:46:28,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:28,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-11-19 09:46:28,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-19 09:46:28,774 INFO L175 Difference]: Start difference. First operand has 93 places, 126 transitions, 1253 flow. Second operand 7 states and 102 transitions. [2024-11-19 09:46:28,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 203 transitions, 2337 flow [2024-11-19 09:46:28,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 203 transitions, 2223 flow, removed 57 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:28,817 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1468 flow [2024-11-19 09:46:28,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1468, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-11-19 09:46:28,818 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-11-19 09:46:28,818 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1468 flow [2024-11-19 09:46:28,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:28,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:28,819 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:28,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:46:28,819 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:28,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1555422319, now seen corresponding path program 1 times [2024-11-19 09:46:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:28,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342499884] [2024-11-19 09:46:28,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:28,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:28,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:28,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342499884] [2024-11-19 09:46:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342499884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:28,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151127566] [2024-11-19 09:46:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:46:28,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:28,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:28,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:28,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 09:46:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:29,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:46:29,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151127566] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:29,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:29,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 11 [2024-11-19 09:46:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737792504] [2024-11-19 09:46:29,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:29,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:46:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:46:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-19 09:46:29,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:29,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1468 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:29,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:29,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:29,634 INFO L124 PetriNetUnfolderBase]: 1980/2938 cut-off events. [2024-11-19 09:46:29,635 INFO L125 PetriNetUnfolderBase]: For 40162/40162 co-relation queries the response was YES. [2024-11-19 09:46:29,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18717 conditions, 2938 events. 1980/2938 cut-off events. For 40162/40162 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13536 event pairs, 260 based on Foata normal form. 10/2948 useless extension candidates. Maximal degree in co-relation 18012. Up to 987 conditions per place. [2024-11-19 09:46:29,664 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 182 selfloop transitions, 55 changer transitions 0/238 dead transitions. [2024-11-19 09:46:29,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 238 transitions, 2905 flow [2024-11-19 09:46:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:46:29,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:46:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-11-19 09:46:29,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-11-19 09:46:29,667 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1468 flow. Second operand 8 states and 131 transitions. [2024-11-19 09:46:29,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 238 transitions, 2905 flow [2024-11-19 09:46:29,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 238 transitions, 2682 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:29,751 INFO L231 Difference]: Finished difference. Result has 111 places, 166 transitions, 1897 flow [2024-11-19 09:46:29,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1897, PETRI_PLACES=111, PETRI_TRANSITIONS=166} [2024-11-19 09:46:29,754 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-11-19 09:46:29,754 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 166 transitions, 1897 flow [2024-11-19 09:46:29,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:29,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:29,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:29,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 09:46:29,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:29,957 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:29,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:29,957 INFO L85 PathProgramCache]: Analyzing trace with hash 67295288, now seen corresponding path program 2 times [2024-11-19 09:46:29,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:29,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102067496] [2024-11-19 09:46:29,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:29,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:29,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:30,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:30,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:30,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102067496] [2024-11-19 09:46:30,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102067496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:30,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426886421] [2024-11-19 09:46:30,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:30,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:30,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:30,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:30,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 09:46:30,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:30,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:30,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:46:30,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:30,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:30,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426886421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:30,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:30,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2024-11-19 09:46:30,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867779421] [2024-11-19 09:46:30,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:30,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:30,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:30,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:46:30,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:30,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 166 transitions, 1897 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:30,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:30,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:30,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:30,605 INFO L124 PetriNetUnfolderBase]: 2223/3256 cut-off events. [2024-11-19 09:46:30,605 INFO L125 PetriNetUnfolderBase]: For 51524/51524 co-relation queries the response was YES. [2024-11-19 09:46:30,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21888 conditions, 3256 events. 2223/3256 cut-off events. For 51524/51524 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15039 event pairs, 780 based on Foata normal form. 4/3260 useless extension candidates. Maximal degree in co-relation 21144. Up to 2569 conditions per place. [2024-11-19 09:46:30,629 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 163 selfloop transitions, 92 changer transitions 5/261 dead transitions. [2024-11-19 09:46:30,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 261 transitions, 3592 flow [2024-11-19 09:46:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-11-19 09:46:30,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-19 09:46:30,631 INFO L175 Difference]: Start difference. First operand has 111 places, 166 transitions, 1897 flow. Second operand 7 states and 95 transitions. [2024-11-19 09:46:30,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 261 transitions, 3592 flow [2024-11-19 09:46:30,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 261 transitions, 3432 flow, removed 80 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:30,753 INFO L231 Difference]: Finished difference. Result has 122 places, 214 transitions, 2880 flow [2024-11-19 09:46:30,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2880, PETRI_PLACES=122, PETRI_TRANSITIONS=214} [2024-11-19 09:46:30,754 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-11-19 09:46:30,754 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 214 transitions, 2880 flow [2024-11-19 09:46:30,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:30,754 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:30,755 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:30,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 09:46:30,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:30,955 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:30,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1376317153, now seen corresponding path program 2 times [2024-11-19 09:46:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:30,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976614078] [2024-11-19 09:46:30,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:30,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:30,967 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:30,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976614078] [2024-11-19 09:46:31,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976614078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:31,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321640875] [2024-11-19 09:46:31,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:31,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:31,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 09:46:31,164 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:31,164 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:31,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:31,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:31,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:31,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321640875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:31,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:31,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2024-11-19 09:46:31,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578814083] [2024-11-19 09:46:31,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:31,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 09:46:31,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:31,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 09:46:31,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:46:31,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:31,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 214 transitions, 2880 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:31,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:31,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:31,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:32,807 INFO L124 PetriNetUnfolderBase]: 3430/4960 cut-off events. [2024-11-19 09:46:32,807 INFO L125 PetriNetUnfolderBase]: For 93492/93492 co-relation queries the response was YES. [2024-11-19 09:46:32,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35303 conditions, 4960 events. 3430/4960 cut-off events. For 93492/93492 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 24139 event pairs, 590 based on Foata normal form. 64/5024 useless extension candidates. Maximal degree in co-relation 34947. Up to 3197 conditions per place. [2024-11-19 09:46:32,841 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 276 selfloop transitions, 291 changer transitions 0/568 dead transitions. [2024-11-19 09:46:32,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 568 transitions, 8628 flow [2024-11-19 09:46:32,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-19 09:46:32,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-19 09:46:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 308 transitions. [2024-11-19 09:46:32,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4562962962962963 [2024-11-19 09:46:32,843 INFO L175 Difference]: Start difference. First operand has 122 places, 214 transitions, 2880 flow. Second operand 25 states and 308 transitions. [2024-11-19 09:46:32,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 568 transitions, 8628 flow [2024-11-19 09:46:33,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 568 transitions, 7906 flow, removed 361 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:33,131 INFO L231 Difference]: Finished difference. Result has 152 places, 447 transitions, 6747 flow [2024-11-19 09:46:33,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6747, PETRI_PLACES=152, PETRI_TRANSITIONS=447} [2024-11-19 09:46:33,132 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-11-19 09:46:33,132 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 447 transitions, 6747 flow [2024-11-19 09:46:33,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:33,133 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:33,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:33,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 09:46:33,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:33,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:33,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash -930522112, now seen corresponding path program 5 times [2024-11-19 09:46:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:33,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707273974] [2024-11-19 09:46:33,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:33,343 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:33,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707273974] [2024-11-19 09:46:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707273974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:33,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601143301] [2024-11-19 09:46:33,500 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:33,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:33,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 09:46:33,557 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:33,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:33,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:33,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601143301] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:33,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:33,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2024-11-19 09:46:33,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006839902] [2024-11-19 09:46:33,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:33,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:46:33,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:33,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:46:33,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:46:33,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:33,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 447 transitions, 6747 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:33,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:33,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:33,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:34,572 INFO L124 PetriNetUnfolderBase]: 3896/5627 cut-off events. [2024-11-19 09:46:34,572 INFO L125 PetriNetUnfolderBase]: For 99878/99878 co-relation queries the response was YES. [2024-11-19 09:46:34,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43692 conditions, 5627 events. 3896/5627 cut-off events. For 99878/99878 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 27916 event pairs, 319 based on Foata normal form. 5/5632 useless extension candidates. Maximal degree in co-relation 42736. Up to 2290 conditions per place. [2024-11-19 09:46:34,610 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 463 selfloop transitions, 129 changer transitions 1/594 dead transitions. [2024-11-19 09:46:34,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 594 transitions, 9933 flow [2024-11-19 09:46:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:46:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:46:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-11-19 09:46:34,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-19 09:46:34,612 INFO L175 Difference]: Start difference. First operand has 152 places, 447 transitions, 6747 flow. Second operand 8 states and 132 transitions. [2024-11-19 09:46:34,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 594 transitions, 9933 flow [2024-11-19 09:46:35,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 594 transitions, 8625 flow, removed 623 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:35,159 INFO L231 Difference]: Finished difference. Result has 163 places, 494 transitions, 6971 flow [2024-11-19 09:46:35,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5768, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6971, PETRI_PLACES=163, PETRI_TRANSITIONS=494} [2024-11-19 09:46:35,160 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-11-19 09:46:35,160 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 494 transitions, 6971 flow [2024-11-19 09:46:35,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:35,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:35,160 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:35,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 09:46:35,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:35,361 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:35,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2032447068, now seen corresponding path program 6 times [2024-11-19 09:46:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:35,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291332080] [2024-11-19 09:46:35,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:35,371 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:35,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291332080] [2024-11-19 09:46:35,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291332080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:35,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407041600] [2024-11-19 09:46:35,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:35,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:35,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:35,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:35,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 09:46:35,564 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:35,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:35,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:46:35,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:35,634 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:35,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407041600] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:35,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:35,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 16 [2024-11-19 09:46:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202228789] [2024-11-19 09:46:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:35,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-19 09:46:35,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:35,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 494 transitions, 6971 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:35,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:35,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:35,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:36,705 INFO L124 PetriNetUnfolderBase]: 4034/5921 cut-off events. [2024-11-19 09:46:36,705 INFO L125 PetriNetUnfolderBase]: For 89730/89730 co-relation queries the response was YES. [2024-11-19 09:46:36,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43062 conditions, 5921 events. 4034/5921 cut-off events. For 89730/89730 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 30425 event pairs, 357 based on Foata normal form. 5/5926 useless extension candidates. Maximal degree in co-relation 42099. Up to 2666 conditions per place. [2024-11-19 09:46:36,746 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 300 selfloop transitions, 342 changer transitions 4/647 dead transitions. [2024-11-19 09:46:36,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 647 transitions, 10321 flow [2024-11-19 09:46:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-11-19 09:46:36,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-11-19 09:46:36,747 INFO L175 Difference]: Start difference. First operand has 163 places, 494 transitions, 6971 flow. Second operand 7 states and 109 transitions. [2024-11-19 09:46:36,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 647 transitions, 10321 flow [2024-11-19 09:46:37,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 647 transitions, 10148 flow, removed 61 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:37,126 INFO L231 Difference]: Finished difference. Result has 173 places, 543 transitions, 8965 flow [2024-11-19 09:46:37,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8965, PETRI_PLACES=173, PETRI_TRANSITIONS=543} [2024-11-19 09:46:37,127 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-11-19 09:46:37,127 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 543 transitions, 8965 flow [2024-11-19 09:46:37,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:37,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:37,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:37,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:37,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 09:46:37,328 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:37,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1545181257, now seen corresponding path program 3 times [2024-11-19 09:46:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:37,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949508539] [2024-11-19 09:46:37,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:37,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:37,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:37,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:37,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:37,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949508539] [2024-11-19 09:46:37,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949508539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:37,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497789355] [2024-11-19 09:46:37,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:46:37,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:37,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:37,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:37,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 09:46:37,536 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:46:37,537 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:37,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:46:37,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:37,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:37,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497789355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:37,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-11-19 09:46:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960063803] [2024-11-19 09:46:37,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:37,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:46:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:46:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:46:37,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:37,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 543 transitions, 8965 flow. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:37,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:37,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:37,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:39,123 INFO L124 PetriNetUnfolderBase]: 4340/6398 cut-off events. [2024-11-19 09:46:39,123 INFO L125 PetriNetUnfolderBase]: For 115226/115226 co-relation queries the response was YES. [2024-11-19 09:46:39,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50303 conditions, 6398 events. 4340/6398 cut-off events. For 115226/115226 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34096 event pairs, 708 based on Foata normal form. 35/6433 useless extension candidates. Maximal degree in co-relation 49466. Up to 2616 conditions per place. [2024-11-19 09:46:39,166 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 440 selfloop transitions, 343 changer transitions 1/785 dead transitions. [2024-11-19 09:46:39,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 785 transitions, 13960 flow [2024-11-19 09:46:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:46:39,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:46:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-11-19 09:46:39,168 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-11-19 09:46:39,168 INFO L175 Difference]: Start difference. First operand has 173 places, 543 transitions, 8965 flow. Second operand 10 states and 154 transitions. [2024-11-19 09:46:39,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 785 transitions, 13960 flow [2024-11-19 09:46:39,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 785 transitions, 13720 flow, removed 69 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:39,576 INFO L231 Difference]: Finished difference. Result has 186 places, 640 transitions, 11656 flow [2024-11-19 09:46:39,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8808, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11656, PETRI_PLACES=186, PETRI_TRANSITIONS=640} [2024-11-19 09:46:39,577 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-11-19 09:46:39,577 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 640 transitions, 11656 flow [2024-11-19 09:46:39,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:46:39,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:39,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:39,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:39,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:39,778 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:39,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1816236760, now seen corresponding path program 7 times [2024-11-19 09:46:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:39,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790153962] [2024-11-19 09:46:39,779 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790153962] [2024-11-19 09:46:39,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790153962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921248311] [2024-11-19 09:46:39,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:39,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:39,881 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:39,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 09:46:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:39,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:46:39,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:40,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:40,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921248311] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:40,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:40,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2024-11-19 09:46:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642304206] [2024-11-19 09:46:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:40,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:46:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:40,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:46:40,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 09:46:40,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:40,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 640 transitions, 11656 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:40,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:40,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:40,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:41,263 INFO L124 PetriNetUnfolderBase]: 4354/6422 cut-off events. [2024-11-19 09:46:41,263 INFO L125 PetriNetUnfolderBase]: For 124690/124690 co-relation queries the response was YES. [2024-11-19 09:46:41,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52383 conditions, 6422 events. 4354/6422 cut-off events. For 124690/124690 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 34183 event pairs, 916 based on Foata normal form. 10/6432 useless extension candidates. Maximal degree in co-relation 51718. Up to 3176 conditions per place. [2024-11-19 09:46:41,391 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 622 selfloop transitions, 82 changer transitions 0/705 dead transitions. [2024-11-19 09:46:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 705 transitions, 13892 flow [2024-11-19 09:46:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:46:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:46:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-11-19 09:46:41,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2024-11-19 09:46:41,393 INFO L175 Difference]: Start difference. First operand has 186 places, 640 transitions, 11656 flow. Second operand 6 states and 92 transitions. [2024-11-19 09:46:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 705 transitions, 13892 flow [2024-11-19 09:46:41,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 705 transitions, 13788 flow, removed 52 selfloop flow, removed 0 redundant places. [2024-11-19 09:46:41,982 INFO L231 Difference]: Finished difference. Result has 193 places, 645 transitions, 11863 flow [2024-11-19 09:46:41,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11574, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11863, PETRI_PLACES=193, PETRI_TRANSITIONS=645} [2024-11-19 09:46:41,983 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-11-19 09:46:41,983 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 645 transitions, 11863 flow [2024-11-19 09:46:41,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:41,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:41,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:41,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 09:46:42,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 09:46:42,188 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:42,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1766921251, now seen corresponding path program 4 times [2024-11-19 09:46:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601829185] [2024-11-19 09:46:42,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:42,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:42,196 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:42,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601829185] [2024-11-19 09:46:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601829185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887924175] [2024-11-19 09:46:42,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:46:42,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:42,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:42,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:42,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 09:46:42,356 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:46:42,357 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:42,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:46:42,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:42,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887924175] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:42,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:46:42,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 12 [2024-11-19 09:46:42,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708990729] [2024-11-19 09:46:42,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:42,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:46:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:42,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:46:42,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-19 09:46:42,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:42,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 645 transitions, 11863 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:42,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:42,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:42,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:43,879 INFO L124 PetriNetUnfolderBase]: 4666/6826 cut-off events. [2024-11-19 09:46:43,879 INFO L125 PetriNetUnfolderBase]: For 135013/135013 co-relation queries the response was YES. [2024-11-19 09:46:43,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56354 conditions, 6826 events. 4666/6826 cut-off events. For 135013/135013 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 35976 event pairs, 752 based on Foata normal form. 10/6836 useless extension candidates. Maximal degree in co-relation 55716. Up to 4055 conditions per place. [2024-11-19 09:46:43,926 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 614 selfloop transitions, 119 changer transitions 0/734 dead transitions. [2024-11-19 09:46:43,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 734 transitions, 14628 flow [2024-11-19 09:46:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:46:43,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:46:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-11-19 09:46:43,927 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-19 09:46:43,927 INFO L175 Difference]: Start difference. First operand has 193 places, 645 transitions, 11863 flow. Second operand 6 states and 87 transitions. [2024-11-19 09:46:43,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 734 transitions, 14628 flow [2024-11-19 09:46:44,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 734 transitions, 14484 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-19 09:46:44,492 INFO L231 Difference]: Finished difference. Result has 200 places, 669 transitions, 12710 flow [2024-11-19 09:46:44,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11731, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12710, PETRI_PLACES=200, PETRI_TRANSITIONS=669} [2024-11-19 09:46:44,493 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-11-19 09:46:44,493 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 669 transitions, 12710 flow [2024-11-19 09:46:44,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:46:44,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:44,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:44,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:44,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 09:46:44,694 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:44,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -304919137, now seen corresponding path program 5 times [2024-11-19 09:46:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665354613] [2024-11-19 09:46:44,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:44,703 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:44,706 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665354613] [2024-11-19 09:46:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665354613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339594318] [2024-11-19 09:46:44,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:46:44,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:44,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:44,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:44,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 09:46:44,836 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:44,836 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:44,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:44,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:44,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:44,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339594318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:44,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2024-11-19 09:46:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218950398] [2024-11-19 09:46:44,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:44,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:44,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:44,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:46:44,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:44,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 669 transitions, 12710 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:44,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:44,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:44,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:46,289 INFO L124 PetriNetUnfolderBase]: 4744/6968 cut-off events. [2024-11-19 09:46:46,290 INFO L125 PetriNetUnfolderBase]: For 152148/152148 co-relation queries the response was YES. [2024-11-19 09:46:46,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58525 conditions, 6968 events. 4744/6968 cut-off events. For 152148/152148 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 37052 event pairs, 655 based on Foata normal form. 12/6980 useless extension candidates. Maximal degree in co-relation 57867. Up to 2818 conditions per place. [2024-11-19 09:46:46,345 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 393 selfloop transitions, 391 changer transitions 14/799 dead transitions. [2024-11-19 09:46:46,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 799 transitions, 16302 flow [2024-11-19 09:46:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-11-19 09:46:46,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-19 09:46:46,347 INFO L175 Difference]: Start difference. First operand has 200 places, 669 transitions, 12710 flow. Second operand 7 states and 95 transitions. [2024-11-19 09:46:46,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 799 transitions, 16302 flow [2024-11-19 09:46:47,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 799 transitions, 16178 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-11-19 09:46:47,080 INFO L231 Difference]: Finished difference. Result has 209 places, 686 transitions, 14002 flow [2024-11-19 09:46:47,080 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12624, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14002, PETRI_PLACES=209, PETRI_TRANSITIONS=686} [2024-11-19 09:46:47,081 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-11-19 09:46:47,081 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 686 transitions, 14002 flow [2024-11-19 09:46:47,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:47,081 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:47,081 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:47,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 09:46:47,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 09:46:47,282 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:47,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash -123891701, now seen corresponding path program 6 times [2024-11-19 09:46:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574880726] [2024-11-19 09:46:47,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:47,291 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:47,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574880726] [2024-11-19 09:46:47,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574880726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509052116] [2024-11-19 09:46:47,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 09:46:47,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:47,455 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:47,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 09:46:47,509 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 09:46:47,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:47,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 09:46:47,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:47,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:46:47,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:47,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509052116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:46:47,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:46:47,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-19 09:46:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965994244] [2024-11-19 09:46:47,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:46:47,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 09:46:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 09:46:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-19 09:46:48,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:48,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 686 transitions, 14002 flow. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 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) [2024-11-19 09:46:48,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:48,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:48,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:51,204 INFO L124 PetriNetUnfolderBase]: 7672/11173 cut-off events. [2024-11-19 09:46:51,204 INFO L125 PetriNetUnfolderBase]: For 273095/273095 co-relation queries the response was YES. [2024-11-19 09:46:51,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96641 conditions, 11173 events. 7672/11173 cut-off events. For 273095/273095 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 63906 event pairs, 786 based on Foata normal form. 65/11238 useless extension candidates. Maximal degree in co-relation 95930. Up to 4505 conditions per place. [2024-11-19 09:46:51,297 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 676 selfloop transitions, 783 changer transitions 1/1461 dead transitions. [2024-11-19 09:46:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1461 transitions, 29968 flow [2024-11-19 09:46:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 09:46:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-19 09:46:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 468 transitions. [2024-11-19 09:46:51,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-11-19 09:46:51,299 INFO L175 Difference]: Start difference. First operand has 209 places, 686 transitions, 14002 flow. Second operand 34 states and 468 transitions. [2024-11-19 09:46:51,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1461 transitions, 29968 flow [2024-11-19 09:46:52,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 1461 transitions, 28722 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-19 09:46:52,603 INFO L231 Difference]: Finished difference. Result has 263 places, 1075 transitions, 23766 flow [2024-11-19 09:46:52,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13319, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=23766, PETRI_PLACES=263, PETRI_TRANSITIONS=1075} [2024-11-19 09:46:52,604 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-11-19 09:46:52,604 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 1075 transitions, 23766 flow [2024-11-19 09:46:52,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 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) [2024-11-19 09:46:52,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:52,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:52,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 09:46:52,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 09:46:52,805 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:52,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -768376975, now seen corresponding path program 7 times [2024-11-19 09:46:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:52,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688401200] [2024-11-19 09:46:52,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 09:46:52,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:46:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688401200] [2024-11-19 09:46:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688401200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:52,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:46:52,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 09:46:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101334534] [2024-11-19 09:46:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:52,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:52,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:46:52,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:52,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 1075 transitions, 23766 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:52,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:52,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:52,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:46:55,897 INFO L124 PetriNetUnfolderBase]: 7737/11331 cut-off events. [2024-11-19 09:46:55,897 INFO L125 PetriNetUnfolderBase]: For 311030/311030 co-relation queries the response was YES. [2024-11-19 09:46:55,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108523 conditions, 11331 events. 7737/11331 cut-off events. For 311030/311030 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 65543 event pairs, 1727 based on Foata normal form. 24/11355 useless extension candidates. Maximal degree in co-relation 107731. Up to 9834 conditions per place. [2024-11-19 09:46:55,997 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 931 selfloop transitions, 220 changer transitions 11/1163 dead transitions. [2024-11-19 09:46:55,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1163 transitions, 27531 flow [2024-11-19 09:46:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:46:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:46:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-19 09:46:55,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-11-19 09:46:55,999 INFO L175 Difference]: Start difference. First operand has 263 places, 1075 transitions, 23766 flow. Second operand 7 states and 94 transitions. [2024-11-19 09:46:55,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1163 transitions, 27531 flow [2024-11-19 09:46:58,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1163 transitions, 26122 flow, removed 494 selfloop flow, removed 5 redundant places. [2024-11-19 09:46:58,112 INFO L231 Difference]: Finished difference. Result has 266 places, 1085 transitions, 23162 flow [2024-11-19 09:46:58,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22437, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1075, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=865, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23162, PETRI_PLACES=266, PETRI_TRANSITIONS=1085} [2024-11-19 09:46:58,113 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-11-19 09:46:58,113 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 1085 transitions, 23162 flow [2024-11-19 09:46:58,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:58,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:46:58,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:46:58,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:46:58,113 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:46:58,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:46:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1239779535, now seen corresponding path program 8 times [2024-11-19 09:46:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:46:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131259120] [2024-11-19 09:46:58,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:46:58,121 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:58,121 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:58,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:46:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131259120] [2024-11-19 09:46:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131259120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:46:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460598416] [2024-11-19 09:46:58,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:46:58,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:46:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:46:58,201 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:46:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 09:46:58,253 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:46:58,253 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:46:58,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:46:58,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:46:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:46:58,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:46:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460598416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:46:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:46:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2024-11-19 09:46:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941788771] [2024-11-19 09:46:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:46:58,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:46:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:46:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:46:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:46:58,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:46:58,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 1085 transitions, 23162 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:46:58,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:46:58,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:46:58,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:01,558 INFO L124 PetriNetUnfolderBase]: 7732/11379 cut-off events. [2024-11-19 09:47:01,558 INFO L125 PetriNetUnfolderBase]: For 276509/276509 co-relation queries the response was YES. [2024-11-19 09:47:01,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104104 conditions, 11379 events. 7732/11379 cut-off events. For 276509/276509 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 66516 event pairs, 1330 based on Foata normal form. 24/11403 useless extension candidates. Maximal degree in co-relation 103656. Up to 6619 conditions per place. [2024-11-19 09:47:01,813 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 960 selfloop transitions, 223 changer transitions 10/1194 dead transitions. [2024-11-19 09:47:01,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1194 transitions, 27096 flow [2024-11-19 09:47:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:47:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:47:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-19 09:47:01,815 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2024-11-19 09:47:01,815 INFO L175 Difference]: Start difference. First operand has 266 places, 1085 transitions, 23162 flow. Second operand 7 states and 103 transitions. [2024-11-19 09:47:01,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1194 transitions, 27096 flow [2024-11-19 09:47:03,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 1194 transitions, 26799 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-19 09:47:03,738 INFO L231 Difference]: Finished difference. Result has 270 places, 1082 transitions, 23301 flow [2024-11-19 09:47:03,739 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22871, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23301, PETRI_PLACES=270, PETRI_TRANSITIONS=1082} [2024-11-19 09:47:03,739 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-11-19 09:47:03,739 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 1082 transitions, 23301 flow [2024-11-19 09:47:03,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:03,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:03,740 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:03,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:03,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:03,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:03,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:03,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1283118762, now seen corresponding path program 8 times [2024-11-19 09:47:03,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:03,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748767777] [2024-11-19 09:47:03,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:47:03,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:03,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:03,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:04,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748767777] [2024-11-19 09:47:04,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748767777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:04,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970205183] [2024-11-19 09:47:04,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 09:47:04,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:04,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:04,084 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:04,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 09:47:04,133 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:04,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:04,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:47:04,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:04,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:04,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970205183] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:04,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:47:04,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 15 [2024-11-19 09:47:04,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985708108] [2024-11-19 09:47:04,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:04,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:47:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:47:04,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:47:04,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:04,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1082 transitions, 23301 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:04,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:04,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:04,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:07,397 INFO L124 PetriNetUnfolderBase]: 7904/11621 cut-off events. [2024-11-19 09:47:07,397 INFO L125 PetriNetUnfolderBase]: For 291215/291215 co-relation queries the response was YES. [2024-11-19 09:47:07,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107074 conditions, 11621 events. 7904/11621 cut-off events. For 291215/291215 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 67996 event pairs, 1378 based on Foata normal form. 4/11625 useless extension candidates. Maximal degree in co-relation 106621. Up to 6286 conditions per place. [2024-11-19 09:47:07,517 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 1037 selfloop transitions, 150 changer transitions 0/1188 dead transitions. [2024-11-19 09:47:07,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1188 transitions, 27213 flow [2024-11-19 09:47:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 09:47:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 09:47:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-19 09:47:07,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51440329218107 [2024-11-19 09:47:07,518 INFO L175 Difference]: Start difference. First operand has 270 places, 1082 transitions, 23301 flow. Second operand 9 states and 125 transitions. [2024-11-19 09:47:07,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1188 transitions, 27213 flow [2024-11-19 09:47:10,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1188 transitions, 26757 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-19 09:47:10,104 INFO L231 Difference]: Finished difference. Result has 277 places, 1114 transitions, 23973 flow [2024-11-19 09:47:10,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=22845, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23973, PETRI_PLACES=277, PETRI_TRANSITIONS=1114} [2024-11-19 09:47:10,105 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-11-19 09:47:10,106 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 1114 transitions, 23973 flow [2024-11-19 09:47:10,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:10,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:10,106 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:10,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 09:47:10,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:10,310 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:10,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1609140042, now seen corresponding path program 9 times [2024-11-19 09:47:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035444403] [2024-11-19 09:47:10,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:10,320 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:10,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:10,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035444403] [2024-11-19 09:47:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035444403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028407397] [2024-11-19 09:47:10,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:10,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:10,479 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:10,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 09:47:10,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:10,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:10,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:47:10,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:10,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:10,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028407397] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:10,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 09:47:10,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2024-11-19 09:47:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075380614] [2024-11-19 09:47:10,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:10,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:47:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:47:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-19 09:47:10,691 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:10,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 1114 transitions, 23973 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:47:10,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:10,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:10,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:13,613 INFO L124 PetriNetUnfolderBase]: 7880/11579 cut-off events. [2024-11-19 09:47:13,613 INFO L125 PetriNetUnfolderBase]: For 294216/294216 co-relation queries the response was YES. [2024-11-19 09:47:13,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107619 conditions, 11579 events. 7880/11579 cut-off events. For 294216/294216 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 67576 event pairs, 1360 based on Foata normal form. 20/11599 useless extension candidates. Maximal degree in co-relation 107170. Up to 5985 conditions per place. [2024-11-19 09:47:13,730 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 1010 selfloop transitions, 163 changer transitions 0/1174 dead transitions. [2024-11-19 09:47:13,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1174 transitions, 27142 flow [2024-11-19 09:47:13,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:47:13,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:47:13,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-19 09:47:13,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-19 09:47:13,732 INFO L175 Difference]: Start difference. First operand has 277 places, 1114 transitions, 23973 flow. Second operand 6 states and 93 transitions. [2024-11-19 09:47:13,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1174 transitions, 27142 flow [2024-11-19 09:47:16,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1174 transitions, 26982 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-11-19 09:47:16,141 INFO L231 Difference]: Finished difference. Result has 280 places, 1109 transitions, 24045 flow [2024-11-19 09:47:16,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=23706, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=24045, PETRI_PLACES=280, PETRI_TRANSITIONS=1109} [2024-11-19 09:47:16,142 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-11-19 09:47:16,142 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 1109 transitions, 24045 flow [2024-11-19 09:47:16,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:47:16,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:16,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:16,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 09:47:16,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:16,343 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:16,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 187743854, now seen corresponding path program 10 times [2024-11-19 09:47:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806446567] [2024-11-19 09:47:16,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:47:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:16,349 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:47:16,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:16,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:16,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:16,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806446567] [2024-11-19 09:47:16,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806446567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:16,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:16,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 09:47:16,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956507733] [2024-11-19 09:47:16,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:16,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:47:16,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:16,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:47:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 09:47:16,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:16,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1109 transitions, 24045 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:19,608 INFO L124 PetriNetUnfolderBase]: 7861/11551 cut-off events. [2024-11-19 09:47:19,608 INFO L125 PetriNetUnfolderBase]: For 292719/292719 co-relation queries the response was YES. [2024-11-19 09:47:19,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108189 conditions, 11551 events. 7861/11551 cut-off events. For 292719/292719 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 67605 event pairs, 928 based on Foata normal form. 17/11568 useless extension candidates. Maximal degree in co-relation 107731. Up to 5406 conditions per place. [2024-11-19 09:47:19,735 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 936 selfloop transitions, 312 changer transitions 0/1249 dead transitions. [2024-11-19 09:47:19,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 1249 transitions, 28611 flow [2024-11-19 09:47:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:47:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:47:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-11-19 09:47:19,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2024-11-19 09:47:19,736 INFO L175 Difference]: Start difference. First operand has 280 places, 1109 transitions, 24045 flow. Second operand 7 states and 107 transitions. [2024-11-19 09:47:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 1249 transitions, 28611 flow [2024-11-19 09:47:22,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1249 transitions, 28435 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-19 09:47:22,052 INFO L231 Difference]: Finished difference. Result has 285 places, 1114 transitions, 24798 flow [2024-11-19 09:47:22,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=23880, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24798, PETRI_PLACES=285, PETRI_TRANSITIONS=1114} [2024-11-19 09:47:22,053 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-11-19 09:47:22,054 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 1114 transitions, 24798 flow [2024-11-19 09:47:22,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:22,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:22,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:22,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 09:47:22,054 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:22,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1442813084, now seen corresponding path program 11 times [2024-11-19 09:47:22,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:22,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199323440] [2024-11-19 09:47:22,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:22,130 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 09:47:22,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199323440] [2024-11-19 09:47:22,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199323440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:22,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:47:22,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 09:47:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486278874] [2024-11-19 09:47:22,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:22,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:47:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:47:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:47:22,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:22,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1114 transitions, 24798 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:47:22,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:22,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:22,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:25,219 INFO L124 PetriNetUnfolderBase]: 7838/11499 cut-off events. [2024-11-19 09:47:25,219 INFO L125 PetriNetUnfolderBase]: For 301520/301520 co-relation queries the response was YES. [2024-11-19 09:47:25,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110266 conditions, 11499 events. 7838/11499 cut-off events. For 301520/301520 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 66846 event pairs, 1260 based on Foata normal form. 14/11513 useless extension candidates. Maximal degree in co-relation 109791. Up to 5395 conditions per place. [2024-11-19 09:47:25,350 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 988 selfloop transitions, 232 changer transitions 0/1221 dead transitions. [2024-11-19 09:47:25,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1221 transitions, 28765 flow [2024-11-19 09:47:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:47:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:47:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-11-19 09:47:25,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2024-11-19 09:47:25,351 INFO L175 Difference]: Start difference. First operand has 285 places, 1114 transitions, 24798 flow. Second operand 6 states and 92 transitions. [2024-11-19 09:47:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1221 transitions, 28765 flow [2024-11-19 09:47:27,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1221 transitions, 28501 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-19 09:47:27,915 INFO L231 Difference]: Finished difference. Result has 288 places, 1113 transitions, 24979 flow [2024-11-19 09:47:27,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24515, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=24979, PETRI_PLACES=288, PETRI_TRANSITIONS=1113} [2024-11-19 09:47:27,917 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-11-19 09:47:27,917 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 1113 transitions, 24979 flow [2024-11-19 09:47:27,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2024-11-19 09:47:27,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:27,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:27,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 09:47:27,917 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:27,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:27,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1043062351, now seen corresponding path program 9 times [2024-11-19 09:47:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638544093] [2024-11-19 09:47:27,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:27,933 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:27,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638544093] [2024-11-19 09:47:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638544093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023640810] [2024-11-19 09:47:28,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:28,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:28,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:28,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:28,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 09:47:28,140 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:28,140 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:28,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:47:28,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:28,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:47:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023640810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:28,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:47:28,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2024-11-19 09:47:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367300484] [2024-11-19 09:47:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:28,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:47:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:47:28,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:47:28,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:28,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 1113 transitions, 24979 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:28,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:28,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:28,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:31,395 INFO L124 PetriNetUnfolderBase]: 7846/11510 cut-off events. [2024-11-19 09:47:31,395 INFO L125 PetriNetUnfolderBase]: For 310752/310752 co-relation queries the response was YES. [2024-11-19 09:47:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111155 conditions, 11510 events. 7846/11510 cut-off events. For 310752/310752 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 66982 event pairs, 1421 based on Foata normal form. 3/11513 useless extension candidates. Maximal degree in co-relation 110680. Up to 6783 conditions per place. [2024-11-19 09:47:31,516 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1023 selfloop transitions, 182 changer transitions 1/1207 dead transitions. [2024-11-19 09:47:31,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1207 transitions, 28685 flow [2024-11-19 09:47:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:47:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:47:31,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-11-19 09:47:31,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.544973544973545 [2024-11-19 09:47:31,517 INFO L175 Difference]: Start difference. First operand has 288 places, 1113 transitions, 24979 flow. Second operand 7 states and 103 transitions. [2024-11-19 09:47:31,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1207 transitions, 28685 flow [2024-11-19 09:47:33,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 1207 transitions, 28209 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 09:47:33,780 INFO L231 Difference]: Finished difference. Result has 292 places, 1117 transitions, 24966 flow [2024-11-19 09:47:33,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24503, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=931, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24966, PETRI_PLACES=292, PETRI_TRANSITIONS=1117} [2024-11-19 09:47:33,781 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-11-19 09:47:33,781 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 1117 transitions, 24966 flow [2024-11-19 09:47:33,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:33,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:33,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:33,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:33,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:33,982 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:33,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 417543228, now seen corresponding path program 3 times [2024-11-19 09:47:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833808738] [2024-11-19 09:47:33,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:33,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:33,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833808738] [2024-11-19 09:47:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833808738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485391461] [2024-11-19 09:47:34,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 09:47:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:34,077 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:34,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 09:47:34,125 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 09:47:34,125 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:34,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 09:47:34,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:34,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 09:47:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485391461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:47:34,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 09:47:34,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2024-11-19 09:47:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208194240] [2024-11-19 09:47:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:47:34,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 09:47:34,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:34,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 09:47:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 09:47:34,152 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:34,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1117 transitions, 24966 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:34,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:34,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:37,139 INFO L124 PetriNetUnfolderBase]: 7849/11536 cut-off events. [2024-11-19 09:47:37,139 INFO L125 PetriNetUnfolderBase]: For 308005/308005 co-relation queries the response was YES. [2024-11-19 09:47:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111069 conditions, 11536 events. 7849/11536 cut-off events. For 308005/308005 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 67384 event pairs, 1421 based on Foata normal form. 12/11548 useless extension candidates. Maximal degree in co-relation 110584. Up to 6783 conditions per place. [2024-11-19 09:47:37,262 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 1024 selfloop transitions, 175 changer transitions 14/1214 dead transitions. [2024-11-19 09:47:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 1214 transitions, 28675 flow [2024-11-19 09:47:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 09:47:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 09:47:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-11-19 09:47:37,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-19 09:47:37,263 INFO L175 Difference]: Start difference. First operand has 292 places, 1117 transitions, 24966 flow. Second operand 7 states and 105 transitions. [2024-11-19 09:47:37,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 1214 transitions, 28675 flow [2024-11-19 09:47:39,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 1214 transitions, 28376 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-19 09:47:39,933 INFO L231 Difference]: Finished difference. Result has 298 places, 1115 transitions, 24988 flow [2024-11-19 09:47:39,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24667, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=942, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24988, PETRI_PLACES=298, PETRI_TRANSITIONS=1115} [2024-11-19 09:47:39,934 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-11-19 09:47:39,935 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 1115 transitions, 24988 flow [2024-11-19 09:47:39,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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) [2024-11-19 09:47:39,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:39,935 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:39,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 09:47:40,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:40,136 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:40,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash -637822911, now seen corresponding path program 10 times [2024-11-19 09:47:40,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133666065] [2024-11-19 09:47:40,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:47:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:40,143 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:47:40,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:40,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133666065] [2024-11-19 09:47:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133666065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112960185] [2024-11-19 09:47:40,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 09:47:40,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:40,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:40,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:40,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 09:47:40,354 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 09:47:40,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:40,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 09:47:40,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:40,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112960185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:40,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 09:47:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889610429] [2024-11-19 09:47:40,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:40,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 09:47:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:40,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 09:47:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-19 09:47:40,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:40,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1115 transitions, 24988 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:47:40,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:40,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:40,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:43,471 INFO L124 PetriNetUnfolderBase]: 7827/11496 cut-off events. [2024-11-19 09:47:43,472 INFO L125 PetriNetUnfolderBase]: For 308101/308101 co-relation queries the response was YES. [2024-11-19 09:47:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111264 conditions, 11496 events. 7827/11496 cut-off events. For 308101/308101 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 67108 event pairs, 1383 based on Foata normal form. 32/11528 useless extension candidates. Maximal degree in co-relation 110931. Up to 6783 conditions per place. [2024-11-19 09:47:43,599 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 988 selfloop transitions, 235 changer transitions 1/1225 dead transitions. [2024-11-19 09:47:43,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1225 transitions, 28899 flow [2024-11-19 09:47:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 09:47:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 09:47:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-11-19 09:47:43,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-11-19 09:47:43,600 INFO L175 Difference]: Start difference. First operand has 298 places, 1115 transitions, 24988 flow. Second operand 10 states and 136 transitions. [2024-11-19 09:47:43,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1225 transitions, 28899 flow [2024-11-19 09:47:45,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1225 transitions, 28537 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-19 09:47:45,834 INFO L231 Difference]: Finished difference. Result has 301 places, 1124 transitions, 25356 flow [2024-11-19 09:47:45,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24528, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=878, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25356, PETRI_PLACES=301, PETRI_TRANSITIONS=1124} [2024-11-19 09:47:45,835 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-11-19 09:47:45,835 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 1124 transitions, 25356 flow [2024-11-19 09:47:45,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:47:45,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:47:45,836 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:47:45,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 09:47:46,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:46,036 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 09:47:46,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:47:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash -98778041, now seen corresponding path program 11 times [2024-11-19 09:47:46,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:47:46,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42702042] [2024-11-19 09:47:46,037 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:47:46,045 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:46,045 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:47:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42702042] [2024-11-19 09:47:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42702042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:47:46,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398531165] [2024-11-19 09:47:46,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 09:47:46,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:47:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:47:46,167 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 09:47:46,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 09:47:46,216 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 09:47:46,217 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 09:47:46,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 09:47:46,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:47:46,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:46,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:47:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:47:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398531165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:47:46,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:47:46,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-19 09:47:46,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306817317] [2024-11-19 09:47:46,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:47:46,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:47:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:47:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:47:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:47:46,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-11-19 09:47:46,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1124 transitions, 25356 flow. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 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) [2024-11-19 09:47:46,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:47:46,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-11-19 09:47:46,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:47:50,422 INFO L124 PetriNetUnfolderBase]: 8840/13116 cut-off events. [2024-11-19 09:47:50,422 INFO L125 PetriNetUnfolderBase]: For 367589/367589 co-relation queries the response was YES. [2024-11-19 09:47:50,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128000 conditions, 13116 events. 8840/13116 cut-off events. For 367589/367589 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 79925 event pairs, 1082 based on Foata normal form. 25/13141 useless extension candidates. Maximal degree in co-relation 127509. Up to 5390 conditions per place. [2024-11-19 09:47:50,610 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1209 selfloop transitions, 357 changer transitions 1/1568 dead transitions. [2024-11-19 09:47:50,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1568 transitions, 36897 flow [2024-11-19 09:47:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 09:47:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-19 09:47:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 278 transitions. [2024-11-19 09:47:50,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.468013468013468 [2024-11-19 09:47:50,612 INFO L175 Difference]: Start difference. First operand has 301 places, 1124 transitions, 25356 flow. Second operand 22 states and 278 transitions. [2024-11-19 09:47:50,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1568 transitions, 36897 flow