./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/exponential-64.i --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/pthread-theta/exponential-64.i -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 c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:57:43,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:57:43,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:57:43,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:57:43,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:57:43,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:57:43,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:57:43,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:57:43,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:57:43,367 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:57:43,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:57:43,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:57:43,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:57:43,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:57:43,369 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:57:43,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:57:43,372 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:57:43,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:57:43,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:57:43,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:57:43,374 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:57:43,375 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:57:43,375 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:57:43,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:57:43,376 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:57:43,376 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:57:43,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:57:43,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:57:43,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:57:43,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:57:43,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:57:43,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:57:43,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:57:43,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:57:43,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:57:43,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:57:43,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:57:43,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:57:43,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:57:43,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:57:43,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:57:43,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:57:43,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-19 09:57:43,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:57:43,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:57:43,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:57:43,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:57:43,710 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:57:43,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-19 09:57:45,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:57:45,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:57:45,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-19 09:57:45,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01ba961b0/26303454fcfb4fc69894784f42c713b2/FLAGe35d793d1 [2024-11-19 09:57:45,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01ba961b0/26303454fcfb4fc69894784f42c713b2 [2024-11-19 09:57:45,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:57:45,428 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:57:45,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:57:45,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:57:45,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:57:45,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:45,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c82d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45, skipping insertion in model container [2024-11-19 09:57:45,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:45,483 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:57:45,826 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:57:45,836 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:57:45,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:57:45,942 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:57:45,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45 WrapperNode [2024-11-19 09:57:45,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:57:45,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:57:45,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:57:45,945 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:57:45,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:45,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:45,992 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-11-19 09:57:45,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:57:45,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:57:45,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:57:45,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:57:46,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,017 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 09:57:46,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,038 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:57:46,039 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:57:46,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:57:46,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:57:46,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (1/1) ... [2024-11-19 09:57:46,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:57:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:57:46,078 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 09:57:46,081 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 09:57:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:57:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-19 09:57:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-19 09:57:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-19 09:57:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-19 09:57:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:57:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:57:46,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:57:46,123 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 09:57:46,275 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:57:46,277 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:57:46,464 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:57:46,464 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:57:46,564 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:57:46,565 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:57:46,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:57:46 BoogieIcfgContainer [2024-11-19 09:57:46,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:57:46,569 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:57:46,569 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:57:46,574 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:57:46,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:57:45" (1/3) ... [2024-11-19 09:57:46,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da526ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:57:46, skipping insertion in model container [2024-11-19 09:57:46,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:57:45" (2/3) ... [2024-11-19 09:57:46,576 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da526ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:57:46, skipping insertion in model container [2024-11-19 09:57:46,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:57:46" (3/3) ... [2024-11-19 09:57:46,577 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-19 09:57:46,591 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:57:46,592 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 09:57:46,592 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:57:46,626 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:57:46,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-19 09:57:46,695 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-19 09:57:46,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:46,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2024-11-19 09:57:46,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-19 09:57:46,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 57 flow [2024-11-19 09:57:46,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:57:46,726 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:57:46,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:57:46,738 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:57:46,742 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:57:46,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:46,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:46,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:57:46,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:46,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:46,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1813756647, now seen corresponding path program 1 times [2024-11-19 09:57:46,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:46,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752549411] [2024-11-19 09:57:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:47,036 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 09:57:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752549411] [2024-11-19 09:57:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752549411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:47,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:47,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:57:47,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116899566] [2024-11-19 09:57:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:47,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:47,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:47,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:47,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:47,081 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-19 09:57:47,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 09:57:47,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:47,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-19 09:57:47,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:47,147 INFO L124 PetriNetUnfolderBase]: 31/91 cut-off events. [2024-11-19 09:57:47,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:47,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 91 events. 31/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 350 event pairs, 13 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 150. Up to 53 conditions per place. [2024-11-19 09:57:47,150 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2024-11-19 09:57:47,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 89 flow [2024-11-19 09:57:47,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-19 09:57:47,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-19 09:57:47,165 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 57 flow. Second operand 3 states and 49 transitions. [2024-11-19 09:57:47,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 89 flow [2024-11-19 09:57:47,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:47,170 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 58 flow [2024-11-19 09:57:47,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-19 09:57:47,178 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-11-19 09:57:47,178 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 58 flow [2024-11-19 09:57:47,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 09:57:47,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:47,179 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:47,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:57:47,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:47,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:47,181 INFO L85 PathProgramCache]: Analyzing trace with hash 641854484, now seen corresponding path program 1 times [2024-11-19 09:57:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:47,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396841199] [2024-11-19 09:57:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:47,220 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:57:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:47,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:57:47,262 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:57:47,264 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:57:47,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:57:47,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:57:47,266 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:57:47,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:57:47,266 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-19 09:57:47,269 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:57:47,270 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:57:47,299 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:57:47,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 90 flow [2024-11-19 09:57:47,325 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2024-11-19 09:57:47,326 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 09:57:47,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 64 events. 9/64 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2024-11-19 09:57:47,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 90 flow [2024-11-19 09:57:47,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2024-11-19 09:57:47,329 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:57:47,332 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:57:47,332 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:57:47,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:57:47,341 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:57:47,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:47,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:47,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:57:47,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:47,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash -778335687, now seen corresponding path program 1 times [2024-11-19 09:57:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976113272] [2024-11-19 09:57:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:47,439 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 09:57:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:47,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976113272] [2024-11-19 09:57:47,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976113272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:47,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:47,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:57:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026107464] [2024-11-19 09:57:47,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:47,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:47,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-19 09:57:47,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 09:57:47,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:47,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-19 09:57:47,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:47,652 INFO L124 PetriNetUnfolderBase]: 283/571 cut-off events. [2024-11-19 09:57:47,652 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-19 09:57:47,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 571 events. 283/571 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3203 event pairs, 111 based on Foata normal form. 40/541 useless extension candidates. Maximal degree in co-relation 444. Up to 433 conditions per place. [2024-11-19 09:57:47,666 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-19 09:57:47,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 132 flow [2024-11-19 09:57:47,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-19 09:57:47,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-19 09:57:47,669 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 3 states and 67 transitions. [2024-11-19 09:57:47,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 132 flow [2024-11-19 09:57:47,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 131 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:47,672 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 89 flow [2024-11-19 09:57:47,672 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-11-19 09:57:47,675 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-19 09:57:47,675 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 89 flow [2024-11-19 09:57:47,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 09:57:47,676 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:47,676 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:47,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:57:47,677 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:47,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 274581387, now seen corresponding path program 1 times [2024-11-19 09:57:47,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:47,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321169670] [2024-11-19 09:57:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:47,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321169670] [2024-11-19 09:57:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321169670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:47,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:57:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274314953] [2024-11-19 09:57:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:47,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:57:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:57:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:57:47,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-19 09:57:47,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 09:57:47,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:47,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-19 09:57:47,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:47,904 INFO L124 PetriNetUnfolderBase]: 319/627 cut-off events. [2024-11-19 09:57:47,904 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:57:47,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 627 events. 319/627 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3649 event pairs, 263 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 512. Up to 445 conditions per place. [2024-11-19 09:57:47,913 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 20 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-19 09:57:47,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 145 flow [2024-11-19 09:57:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:57:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:57:47,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-19 09:57:47,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-11-19 09:57:47,919 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 89 flow. Second operand 4 states and 79 transitions. [2024-11-19 09:57:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 145 flow [2024-11-19 09:57:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:47,921 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 101 flow [2024-11-19 09:57:47,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-19 09:57:47,922 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-19 09:57:47,923 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 101 flow [2024-11-19 09:57:47,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 09:57:47,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:47,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:47,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:57:47,923 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:47,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash -78730911, now seen corresponding path program 1 times [2024-11-19 09:57:47,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864700913] [2024-11-19 09:57:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:57:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864700913] [2024-11-19 09:57:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864700913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:47,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:47,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:57:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427291895] [2024-11-19 09:57:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:47,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:47,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-11-19 09:57:47,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:47,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:47,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-11-19 09:57:47,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:48,074 INFO L124 PetriNetUnfolderBase]: 319/607 cut-off events. [2024-11-19 09:57:48,075 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:57:48,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 607 events. 319/607 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3415 event pairs, 299 based on Foata normal form. 20/569 useless extension candidates. Maximal degree in co-relation 550. Up to 501 conditions per place. [2024-11-19 09:57:48,079 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 17 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2024-11-19 09:57:48,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 137 flow [2024-11-19 09:57:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:48,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-19 09:57:48,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-19 09:57:48,082 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 101 flow. Second operand 3 states and 57 transitions. [2024-11-19 09:57:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 137 flow [2024-11-19 09:57:48,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 131 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:57:48,086 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 93 flow [2024-11-19 09:57:48,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-19 09:57:48,088 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-19 09:57:48,088 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 93 flow [2024-11-19 09:57:48,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:48,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:48,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:48,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:57:48,090 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:48,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash -78730272, now seen corresponding path program 1 times [2024-11-19 09:57:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947899448] [2024-11-19 09:57:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947899448] [2024-11-19 09:57:48,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947899448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:57:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120782246] [2024-11-19 09:57:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:48,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:57:48,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:57:48,177 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 09:57:48,179 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 09:57:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:48,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:57:48,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:57:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:48,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:57:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120782246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:57:48,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:57:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 09:57:48,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979267456] [2024-11-19 09:57:48,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:57:48,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:57:48,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:48,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:57:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:57:48,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-19 09:57:48,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 93 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 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 09:57:48,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:48,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-19 09:57:48,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:48,459 INFO L124 PetriNetUnfolderBase]: 119/247 cut-off events. [2024-11-19 09:57:48,459 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-19 09:57:48,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 247 events. 119/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1140 event pairs, 15 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 512. Up to 96 conditions per place. [2024-11-19 09:57:48,462 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-19 09:57:48,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 131 flow [2024-11-19 09:57:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 09:57:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 09:57:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-19 09:57:48,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-11-19 09:57:48,464 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 93 flow. Second operand 5 states and 94 transitions. [2024-11-19 09:57:48,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 131 flow [2024-11-19 09:57:48,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:48,465 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 74 flow [2024-11-19 09:57:48,465 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2024-11-19 09:57:48,466 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-19 09:57:48,466 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 74 flow [2024-11-19 09:57:48,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 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 09:57:48,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:48,467 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:48,486 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 09:57:48,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 09:57:48,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:48,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2014220798, now seen corresponding path program 1 times [2024-11-19 09:57:48,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:48,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432850649] [2024-11-19 09:57:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:48,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:57:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:48,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:57:48,697 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:57:48,697 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:57:48,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:57:48,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:57:48,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:57:48,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:57:48,698 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:57:48,699 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:57:48,699 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:57:48,724 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:57:48,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 122 flow [2024-11-19 09:57:48,736 INFO L124 PetriNetUnfolderBase]: 12/88 cut-off events. [2024-11-19 09:57:48,736 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-19 09:57:48,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 88 events. 12/88 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2024-11-19 09:57:48,737 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 43 transitions, 122 flow [2024-11-19 09:57:48,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 41 transitions, 115 flow [2024-11-19 09:57:48,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:57:48,741 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:57:48,744 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:57:48,746 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:57:48,746 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:57:48,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:48,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:48,746 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:57:48,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:48,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:48,747 INFO L85 PathProgramCache]: Analyzing trace with hash 493752921, now seen corresponding path program 1 times [2024-11-19 09:57:48,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:48,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091248240] [2024-11-19 09:57:48,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:48,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:48,782 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 09:57:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091248240] [2024-11-19 09:57:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091248240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:48,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:57:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769416668] [2024-11-19 09:57:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:48,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:48,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:48,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:48,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:48,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-19 09:57:48,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 09:57:48,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:48,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-19 09:57:48,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:49,077 INFO L124 PetriNetUnfolderBase]: 1803/3003 cut-off events. [2024-11-19 09:57:49,078 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-19 09:57:49,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 3003 events. 1803/3003 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18879 event pairs, 1385 based on Foata normal form. 168/2846 useless extension candidates. Maximal degree in co-relation 2516. Up to 2465 conditions per place. [2024-11-19 09:57:49,105 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 24 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-19 09:57:49,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 171 flow [2024-11-19 09:57:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-19 09:57:49,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-19 09:57:49,109 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 115 flow. Second operand 3 states and 83 transitions. [2024-11-19 09:57:49,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 171 flow [2024-11-19 09:57:49,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 166 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:49,112 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 116 flow [2024-11-19 09:57:49,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-19 09:57:49,114 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-19 09:57:49,114 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 116 flow [2024-11-19 09:57:49,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 09:57:49,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:49,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:49,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:57:49,116 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:49,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -281942685, now seen corresponding path program 1 times [2024-11-19 09:57:49,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:49,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110583735] [2024-11-19 09:57:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:49,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110583735] [2024-11-19 09:57:49,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110583735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:49,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:49,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:57:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75512842] [2024-11-19 09:57:49,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:49,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:57:49,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:57:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:57:49,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-19 09:57:49,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 09:57:49,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:49,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-19 09:57:49,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:49,559 INFO L124 PetriNetUnfolderBase]: 2031/3315 cut-off events. [2024-11-19 09:57:49,559 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-11-19 09:57:49,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 3315 events. 2031/3315 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20932 event pairs, 1719 based on Foata normal form. 0/3106 useless extension candidates. Maximal degree in co-relation 2848. Up to 2477 conditions per place. [2024-11-19 09:57:49,582 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-19 09:57:49,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 188 flow [2024-11-19 09:57:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:57:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:57:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-19 09:57:49,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2024-11-19 09:57:49,585 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 116 flow. Second operand 4 states and 101 transitions. [2024-11-19 09:57:49,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 188 flow [2024-11-19 09:57:49,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:49,589 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 128 flow [2024-11-19 09:57:49,589 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-19 09:57:49,589 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-19 09:57:49,590 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 128 flow [2024-11-19 09:57:49,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 09:57:49,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:49,591 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:49,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:57:49,591 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:49,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -151107916, now seen corresponding path program 1 times [2024-11-19 09:57:49,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:49,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055359952] [2024-11-19 09:57:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:49,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:57:49,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055359952] [2024-11-19 09:57:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055359952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:49,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:57:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539020443] [2024-11-19 09:57:49,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:49,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:49,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-19 09:57:49,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 09:57:49,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:49,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-19 09:57:49,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:49,985 INFO L124 PetriNetUnfolderBase]: 2031/3231 cut-off events. [2024-11-19 09:57:49,985 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-19 09:57:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6806 conditions, 3231 events. 2031/3231 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19902 event pairs, 1947 based on Foata normal form. 84/3066 useless extension candidates. Maximal degree in co-relation 3014. Up to 2789 conditions per place. [2024-11-19 09:57:50,011 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-11-19 09:57:50,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 39 transitions, 172 flow [2024-11-19 09:57:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:50,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-19 09:57:50,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-19 09:57:50,014 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 128 flow. Second operand 3 states and 73 transitions. [2024-11-19 09:57:50,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 39 transitions, 172 flow [2024-11-19 09:57:50,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:57:50,023 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 120 flow [2024-11-19 09:57:50,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2024-11-19 09:57:50,026 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-19 09:57:50,026 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 120 flow [2024-11-19 09:57:50,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 09:57:50,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:50,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:50,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:57:50,027 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:50,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash -151107277, now seen corresponding path program 1 times [2024-11-19 09:57:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434027068] [2024-11-19 09:57:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:50,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:50,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434027068] [2024-11-19 09:57:50,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434027068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:57:50,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613385846] [2024-11-19 09:57:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:50,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:57:50,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:57:50,091 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 09:57:50,093 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 09:57:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:50,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:57:50,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:57:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:50,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:57:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:50,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613385846] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:57:50,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:57:50,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 09:57:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062767394] [2024-11-19 09:57:50,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:57:50,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:57:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:57:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:57:50,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-19 09:57:50,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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 09:57:50,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:50,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-19 09:57:50,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:50,428 INFO L124 PetriNetUnfolderBase]: 807/1335 cut-off events. [2024-11-19 09:57:50,428 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-19 09:57:50,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1335 events. 807/1335 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7307 event pairs, 135 based on Foata normal form. 84/1374 useless extension candidates. Maximal degree in co-relation 2752. Up to 528 conditions per place. [2024-11-19 09:57:50,437 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 31 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-11-19 09:57:50,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 204 flow [2024-11-19 09:57:50,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:57:50,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:57:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-19 09:57:50,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-19 09:57:50,439 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 120 flow. Second operand 6 states and 146 transitions. [2024-11-19 09:57:50,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 204 flow [2024-11-19 09:57:50,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:50,442 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 107 flow [2024-11-19 09:57:50,442 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2024-11-19 09:57:50,443 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-19 09:57:50,443 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 107 flow [2024-11-19 09:57:50,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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 09:57:50,444 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:50,444 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:50,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 09:57:50,646 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,SelfDestructingSolverStorable10 [2024-11-19 09:57:50,647 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:50,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 214581830, now seen corresponding path program 1 times [2024-11-19 09:57:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157840832] [2024-11-19 09:57:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:50,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:57:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:50,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:57:50,677 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:57:50,677 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:57:50,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:57:50,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:57:50,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:57:50,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:57:50,678 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:57:50,679 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:57:50,679 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-19 09:57:50,703 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:57:50,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 158 flow [2024-11-19 09:57:50,712 INFO L124 PetriNetUnfolderBase]: 15/112 cut-off events. [2024-11-19 09:57:50,712 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-19 09:57:50,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 112 events. 15/112 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 119. Up to 10 conditions per place. [2024-11-19 09:57:50,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 51 transitions, 158 flow [2024-11-19 09:57:50,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 49 transitions, 150 flow [2024-11-19 09:57:50,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:57:50,714 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:57:50,714 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:57:50,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:57:50,716 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:57:50,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:50,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:50,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:57:50,717 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:50,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:50,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2002509177, now seen corresponding path program 1 times [2024-11-19 09:57:50,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:50,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629482512] [2024-11-19 09:57:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:50,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:50,742 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 09:57:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:50,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629482512] [2024-11-19 09:57:50,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629482512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:50,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:50,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:57:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297908070] [2024-11-19 09:57:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:50,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:50,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:50,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-19 09:57:50,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-19 09:57:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:52,328 INFO L124 PetriNetUnfolderBase]: 9931/14779 cut-off events. [2024-11-19 09:57:52,328 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-19 09:57:52,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28636 conditions, 14779 events. 9931/14779 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 98366 event pairs, 8233 based on Foata normal form. 680/14101 useless extension candidates. Maximal degree in co-relation 12948. Up to 12641 conditions per place. [2024-11-19 09:57:52,460 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 28 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-11-19 09:57:52,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 214 flow [2024-11-19 09:57:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-19 09:57:52,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-11-19 09:57:52,462 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 150 flow. Second operand 3 states and 99 transitions. [2024-11-19 09:57:52,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 214 flow [2024-11-19 09:57:52,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 201 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:52,472 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 143 flow [2024-11-19 09:57:52,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-11-19 09:57:52,473 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-11-19 09:57:52,474 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 143 flow [2024-11-19 09:57:52,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:52,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:52,474 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:52,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:57:52,475 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:52,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1376707005, now seen corresponding path program 1 times [2024-11-19 09:57:52,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:52,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088909860] [2024-11-19 09:57:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:52,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088909860] [2024-11-19 09:57:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088909860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:52,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:52,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:57:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570429985] [2024-11-19 09:57:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:52,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:57:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:52,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:57:52,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:57:52,534 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-19 09:57:52,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:52,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:52,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-19 09:57:52,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:54,207 INFO L124 PetriNetUnfolderBase]: 11183/16371 cut-off events. [2024-11-19 09:57:54,208 INFO L125 PetriNetUnfolderBase]: For 1830/1830 co-relation queries the response was YES. [2024-11-19 09:57:54,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32074 conditions, 16371 events. 11183/16371 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 108062 event pairs, 9591 based on Foata normal form. 0/15521 useless extension candidates. Maximal degree in co-relation 14496. Up to 12653 conditions per place. [2024-11-19 09:57:54,442 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-19 09:57:54,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 231 flow [2024-11-19 09:57:54,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:57:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:57:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-19 09:57:54,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-11-19 09:57:54,443 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 143 flow. Second operand 4 states and 123 transitions. [2024-11-19 09:57:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 231 flow [2024-11-19 09:57:54,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:54,450 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 155 flow [2024-11-19 09:57:54,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-19 09:57:54,451 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-19 09:57:54,451 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 155 flow [2024-11-19 09:57:54,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:54,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:54,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:54,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:57:54,452 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:54,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 270936583, now seen corresponding path program 1 times [2024-11-19 09:57:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:54,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649633973] [2024-11-19 09:57:54,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:54,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:57:54,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:54,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649633973] [2024-11-19 09:57:54,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649633973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:54,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:54,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:57:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585683505] [2024-11-19 09:57:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:54,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:54,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-19 09:57:54,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:54,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:54,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-19 09:57:54,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:55,841 INFO L124 PetriNetUnfolderBase]: 11183/16031 cut-off events. [2024-11-19 09:57:55,841 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-11-19 09:57:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33432 conditions, 16031 events. 11183/16031 cut-off events. For 2170/2170 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 102274 event pairs, 10843 based on Foata normal form. 340/15353 useless extension candidates. Maximal degree in co-relation 15174. Up to 14245 conditions per place. [2024-11-19 09:57:55,942 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 25 selfloop transitions, 1 changer transitions 1/47 dead transitions. [2024-11-19 09:57:55,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 47 transitions, 207 flow [2024-11-19 09:57:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:57:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:57:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-19 09:57:55,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2024-11-19 09:57:55,944 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 155 flow. Second operand 3 states and 89 transitions. [2024-11-19 09:57:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 47 transitions, 207 flow [2024-11-19 09:57:55,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 47 transitions, 201 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:57:55,994 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 147 flow [2024-11-19 09:57:55,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-19 09:57:55,994 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-19 09:57:55,995 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 147 flow [2024-11-19 09:57:55,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:57:55,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:55,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:55,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:57:55,995 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:55,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 270937222, now seen corresponding path program 1 times [2024-11-19 09:57:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742537535] [2024-11-19 09:57:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:56,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:56,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742537535] [2024-11-19 09:57:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742537535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:57:56,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603142392] [2024-11-19 09:57:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:56,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:57:56,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:57:56,051 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 09:57:56,053 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 09:57:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:56,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:57:56,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:57:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:56,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:57:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:57:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603142392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:57:56,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:57:56,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 09:57:56,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633375117] [2024-11-19 09:57:56,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:57:56,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:57:56,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:56,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:57:56,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:57:56,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-19 09:57:56,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 147 flow. Second operand has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 09:57:56,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:56,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-19 09:57:56,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:57:57,357 INFO L124 PetriNetUnfolderBase]: 8935/12855 cut-off events. [2024-11-19 09:57:57,357 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-11-19 09:57:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26316 conditions, 12855 events. 8935/12855 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 78720 event pairs, 927 based on Foata normal form. 84/12593 useless extension candidates. Maximal degree in co-relation 26300. Up to 6657 conditions per place. [2024-11-19 09:57:57,477 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-19 09:57:57,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 319 flow [2024-11-19 09:57:57,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:57:57,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:57:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-11-19 09:57:57,479 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-11-19 09:57:57,479 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 147 flow. Second operand 6 states and 189 transitions. [2024-11-19 09:57:57,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 319 flow [2024-11-19 09:57:57,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:57:57,503 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 186 flow [2024-11-19 09:57:57,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-11-19 09:57:57,505 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2024-11-19 09:57:57,505 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 186 flow [2024-11-19 09:57:57,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 09:57:57,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:57,505 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:57:57,524 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 09:57:57,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:57:57,706 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:57,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1912241560, now seen corresponding path program 1 times [2024-11-19 09:57:57,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:57,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911480036] [2024-11-19 09:57:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:57,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:57,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:57:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:57:57,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:57:57,737 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:57:57,737 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:57:57,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:57:57,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:57:57,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:57:57,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 09:57:57,738 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:57:57,739 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:57:57,739 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-19 09:57:57,778 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:57:57,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 59 transitions, 198 flow [2024-11-19 09:57:57,794 INFO L124 PetriNetUnfolderBase]: 18/136 cut-off events. [2024-11-19 09:57:57,794 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-19 09:57:57,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 136 events. 18/136 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2024-11-19 09:57:57,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 59 transitions, 198 flow [2024-11-19 09:57:57,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 57 transitions, 189 flow [2024-11-19 09:57:57,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:57:57,798 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:57:57,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:57:57,801 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:57:57,801 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:57:57,801 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:57:57,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:57:57,801 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:57:57,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:57:57,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:57:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -547034215, now seen corresponding path program 1 times [2024-11-19 09:57:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:57:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147040353] [2024-11-19 09:57:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:57:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:57:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:57:57,831 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 09:57:57,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:57:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147040353] [2024-11-19 09:57:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147040353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:57:57,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:57:57,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:57:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395505527] [2024-11-19 09:57:57,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:57:57,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:57:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:57:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:57:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:57:57,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 09:57:57,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 09:57:57,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:57:57,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 09:57:57,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:03,167 INFO L124 PetriNetUnfolderBase]: 50635/70075 cut-off events. [2024-11-19 09:58:03,167 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-19 09:58:03,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137438 conditions, 70075 events. 50635/70075 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 480250 event pairs, 38367 based on Foata normal form. 2728/67353 useless extension candidates. Maximal degree in co-relation 63252. Up to 61537 conditions per place. [2024-11-19 09:58:03,947 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-19 09:58:03,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 59 transitions, 261 flow [2024-11-19 09:58:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-19 09:58:03,948 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2024-11-19 09:58:03,948 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 189 flow. Second operand 3 states and 115 transitions. [2024-11-19 09:58:03,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 59 transitions, 261 flow [2024-11-19 09:58:04,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 59 transitions, 236 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:04,025 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 170 flow [2024-11-19 09:58:04,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2024-11-19 09:58:04,025 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2024-11-19 09:58:04,026 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 170 flow [2024-11-19 09:58:04,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 09:58:04,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:04,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:04,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 09:58:04,026 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:04,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:04,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1285255723, now seen corresponding path program 1 times [2024-11-19 09:58:04,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:04,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150300592] [2024-11-19 09:58:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:04,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:04,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150300592] [2024-11-19 09:58:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150300592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:04,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 09:58:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774806403] [2024-11-19 09:58:04,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:04,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:58:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:58:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:58:04,078 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 09:58:04,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 09:58:04,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:04,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 09:58:04,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:10,494 INFO L124 PetriNetUnfolderBase]: 57007/77811 cut-off events. [2024-11-19 09:58:10,494 INFO L125 PetriNetUnfolderBase]: For 11430/11430 co-relation queries the response was YES. [2024-11-19 09:58:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152908 conditions, 77811 events. 57007/77811 cut-off events. For 11430/11430 co-relation queries the response was YES. Maximal size of possible extension queue 2864. Compared 528096 event pairs, 40519 based on Foata normal form. 0/74401 useless extension candidates. Maximal degree in co-relation 70304. Up to 61549 conditions per place. [2024-11-19 09:58:11,110 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 38 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-19 09:58:11,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 274 flow [2024-11-19 09:58:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:58:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:58:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-19 09:58:11,112 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614406779661017 [2024-11-19 09:58:11,112 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 170 flow. Second operand 4 states and 145 transitions. [2024-11-19 09:58:11,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 274 flow [2024-11-19 09:58:11,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:11,149 INFO L231 Difference]: Finished difference. Result has 80 places, 56 transitions, 182 flow [2024-11-19 09:58:11,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2024-11-19 09:58:11,149 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2024-11-19 09:58:11,149 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 182 flow [2024-11-19 09:58:11,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 09:58:11,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:11,150 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:11,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 09:58:11,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:11,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:11,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1187402586, now seen corresponding path program 1 times [2024-11-19 09:58:11,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:11,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122713667] [2024-11-19 09:58:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:11,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:58:11,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:11,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122713667] [2024-11-19 09:58:11,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122713667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:11,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:11,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 09:58:11,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610216563] [2024-11-19 09:58:11,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:11,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:11,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:11,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-19 09:58:11,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:11,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:11,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-19 09:58:11,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:17,465 INFO L124 PetriNetUnfolderBase]: 57007/76447 cut-off events. [2024-11-19 09:58:17,466 INFO L125 PetriNetUnfolderBase]: For 12794/12794 co-relation queries the response was YES. [2024-11-19 09:58:17,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158362 conditions, 76447 events. 57007/76447 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 496352 event pairs, 55643 based on Foata normal form. 1364/73721 useless extension candidates. Maximal degree in co-relation 73030. Up to 69285 conditions per place. [2024-11-19 09:58:18,051 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 29 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2024-11-19 09:58:18,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 55 transitions, 242 flow [2024-11-19 09:58:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:58:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:58:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-19 09:58:18,052 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-19 09:58:18,052 INFO L175 Difference]: Start difference. First operand has 80 places, 56 transitions, 182 flow. Second operand 3 states and 105 transitions. [2024-11-19 09:58:18,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 55 transitions, 242 flow [2024-11-19 09:58:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 55 transitions, 236 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-19 09:58:18,726 INFO L231 Difference]: Finished difference. Result has 79 places, 54 transitions, 174 flow [2024-11-19 09:58:18,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2024-11-19 09:58:18,726 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-19 09:58:18,726 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 174 flow [2024-11-19 09:58:18,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:58:18,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:18,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:18,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 09:58:18,727 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:18,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1187403225, now seen corresponding path program 1 times [2024-11-19 09:58:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:18,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626141818] [2024-11-19 09:58:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:18,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:18,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626141818] [2024-11-19 09:58:18,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626141818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:58:18,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760763793] [2024-11-19 09:58:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:18,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:58:18,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:58:18,775 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 09:58:18,776 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 09:58:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:18,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 09:58:18,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:58:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:18,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:58:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760763793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:58:18,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:58:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-19 09:58:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512278377] [2024-11-19 09:58:18,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:58:18,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 09:58:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 09:58:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 09:58:18,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 09:58:18,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 09:58:18,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:18,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 09:58:18,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:23,588 INFO L124 PetriNetUnfolderBase]: 49639/67127 cut-off events. [2024-11-19 09:58:23,588 INFO L125 PetriNetUnfolderBase]: For 13356/13356 co-relation queries the response was YES. [2024-11-19 09:58:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136910 conditions, 67127 events. 49639/67127 cut-off events. For 13356/13356 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 435952 event pairs, 8337 based on Foata normal form. 84/64225 useless extension candidates. Maximal degree in co-relation 136892. Up to 38401 conditions per place. [2024-11-19 09:58:24,048 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 55 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-11-19 09:58:24,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 362 flow [2024-11-19 09:58:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 09:58:24,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 09:58:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-11-19 09:58:24,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2024-11-19 09:58:24,050 INFO L175 Difference]: Start difference. First operand has 79 places, 54 transitions, 174 flow. Second operand 6 states and 219 transitions. [2024-11-19 09:58:24,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 362 flow [2024-11-19 09:58:24,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:58:24,530 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 213 flow [2024-11-19 09:58:24,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2024-11-19 09:58:24,531 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-11-19 09:58:24,531 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 213 flow [2024-11-19 09:58:24,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 09:58:24,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:24,531 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:24,549 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 09:58:24,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:58:24,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:24,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:24,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1416873895, now seen corresponding path program 1 times [2024-11-19 09:58:24,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071476582] [2024-11-19 09:58:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:24,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071476582] [2024-11-19 09:58:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071476582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 09:58:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271377560] [2024-11-19 09:58:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:24,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 09:58:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:58:24,843 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 09:58:24,845 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 09:58:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:24,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 09:58:24,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 09:58:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:25,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 09:58:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 09:58:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271377560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 09:58:25,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 09:58:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-19 09:58:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057298545] [2024-11-19 09:58:25,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 09:58:25,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 09:58:25,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 09:58:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-11-19 09:58:25,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-19 09:58:25,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 30.058823529411764) internal successors, (511), 17 states have internal predecessors, (511), 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 09:58:25,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:25,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-19 09:58:25,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:58:27,156 INFO L124 PetriNetUnfolderBase]: 23783/32311 cut-off events. [2024-11-19 09:58:27,157 INFO L125 PetriNetUnfolderBase]: For 20766/20766 co-relation queries the response was YES. [2024-11-19 09:58:27,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71372 conditions, 32311 events. 23783/32311 cut-off events. For 20766/20766 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 196583 event pairs, 1383 based on Foata normal form. 1280/33155 useless extension candidates. Maximal degree in co-relation 71355. Up to 13568 conditions per place. [2024-11-19 09:58:27,754 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 61 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-11-19 09:58:27,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 411 flow [2024-11-19 09:58:27,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 09:58:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 09:58:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-11-19 09:58:27,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586864406779661 [2024-11-19 09:58:27,756 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 213 flow. Second operand 8 states and 277 transitions. [2024-11-19 09:58:27,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 411 flow [2024-11-19 09:58:27,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 390 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-19 09:58:27,793 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 183 flow [2024-11-19 09:58:27,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2024-11-19 09:58:27,794 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-19 09:58:27,794 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 183 flow [2024-11-19 09:58:27,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.058823529411764) internal successors, (511), 17 states have internal predecessors, (511), 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 09:58:27,794 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:27,795 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:58:27,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 09:58:27,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 09:58:27,995 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:27,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1821035128, now seen corresponding path program 1 times [2024-11-19 09:58:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:27,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532754373] [2024-11-19 09:58:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:28,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:58:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:58:28,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:58:28,027 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:58:28,027 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-19 09:58:28,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-19 09:58:28,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-19 09:58:28,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-19 09:58:28,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 09:58:28,028 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-19 09:58:28,028 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:58:28,028 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-19 09:58:28,062 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:58:28,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 67 transitions, 242 flow [2024-11-19 09:58:28,072 INFO L124 PetriNetUnfolderBase]: 21/160 cut-off events. [2024-11-19 09:58:28,072 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-19 09:58:28,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 160 events. 21/160 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 193. Up to 14 conditions per place. [2024-11-19 09:58:28,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 67 transitions, 242 flow [2024-11-19 09:58:28,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 65 transitions, 232 flow [2024-11-19 09:58:28,075 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:58:28,076 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;@181b09e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:58:28,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 09:58:28,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:58:28,077 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 09:58:28,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:58:28,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:58:28,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 09:58:28,078 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 09:58:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:58:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1435057337, now seen corresponding path program 1 times [2024-11-19 09:58:28,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:58:28,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987161466] [2024-11-19 09:58:28,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:58:28,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:58:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:58:28,100 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 09:58:28,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:58:28,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987161466] [2024-11-19 09:58:28,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987161466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:58:28,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:58:28,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:58:28,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016540879] [2024-11-19 09:58:28,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:58:28,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:58:28,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:58:28,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:58:28,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:58:28,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-11-19 09:58:28,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 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 09:58:28,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:58:28,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-11-19 09:58:28,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand