./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/exponential-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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-nondet.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 f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:44:49,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:44:50,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:44:50,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:44:50,052 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:44:50,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:44:50,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:44:50,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:44:50,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:44:50,084 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:44:50,084 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:44:50,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:44:50,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:44:50,089 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:44:50,089 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:44:50,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:44:50,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:44:50,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:44:50,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:44:50,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:44:50,090 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:44:50,091 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:44:50,091 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:44:50,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:44:50,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:44:50,092 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:44:50,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:44:50,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:44:50,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:44:50,093 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:44:50,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:44:50,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:44:50,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:44:50,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:44:50,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:44:50,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:44:50,094 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:44:50,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:44:50,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:44:50,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:44:50,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:44:50,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:44:50,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f87ddde6d61a5d434f69c49dc65eaf95f54327ebb0ef5acca382e4d4744605ae [2024-11-17 03:44:50,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:44:50,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:44:50,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:44:50,381 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:44:50,381 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:44:50,382 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-17 03:44:51,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:44:52,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:44:52,093 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-nondet.i [2024-11-17 03:44:52,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191ef6f50/feb86121c2264d7a90d3f84fbad3932c/FLAG35148c697 [2024-11-17 03:44:52,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191ef6f50/feb86121c2264d7a90d3f84fbad3932c [2024-11-17 03:44:52,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:44:52,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:44:52,387 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:44:52,387 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:44:52,391 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:44:52,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:52,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30be0681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52, skipping insertion in model container [2024-11-17 03:44:52,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:52,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:44:52,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:44:52,832 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:44:52,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:44:52,944 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:44:52,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52 WrapperNode [2024-11-17 03:44:52,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:44:52,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:44:52,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:44:52,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:44:52,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:52,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:52,996 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2024-11-17 03:44:52,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:44:52,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:44:52,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:44:52,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:44:53,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,024 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]. [2024-11-17 03:44:53,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,030 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:44:53,035 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:44:53,035 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:44:53,036 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:44:53,036 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (1/1) ... [2024-11-17 03:44:53,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:44:53,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:53,073 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) [2024-11-17 03:44:53,075 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 [2024-11-17 03:44:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:44:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-17 03:44:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-17 03:44:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-17 03:44:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-17 03:44:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:44:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:44:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:44:53,127 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:44:53,255 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:44:53,256 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:44:53,460 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:44:53,460 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:44:53,571 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:44:53,572 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:44:53,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:44:53 BoogieIcfgContainer [2024-11-17 03:44:53,572 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:44:53,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:44:53,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:44:53,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:44:53,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:44:52" (1/3) ... [2024-11-17 03:44:53,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47e0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:44:53, skipping insertion in model container [2024-11-17 03:44:53,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:44:52" (2/3) ... [2024-11-17 03:44:53,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d47e0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:44:53, skipping insertion in model container [2024-11-17 03:44:53,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:44:53" (3/3) ... [2024-11-17 03:44:53,581 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-nondet.i [2024-11-17 03:44:53,593 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:44:53,594 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:44:53,594 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:44:53,639 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:44:53,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 33 transitions, 74 flow [2024-11-17 03:44:53,697 INFO L124 PetriNetUnfolderBase]: 10/52 cut-off events. [2024-11-17 03:44:53,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:44:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 52 events. 10/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 107 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2024-11-17 03:44:53,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 33 transitions, 74 flow [2024-11-17 03:44:53,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 31 transitions, 69 flow [2024-11-17 03:44:53,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:44:53,722 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;@6a7121b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:44:53,723 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:44:53,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:44:53,731 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-17 03:44:53,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:44:53,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:53,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:53,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:53,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1692362913, now seen corresponding path program 1 times [2024-11-17 03:44:53,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:53,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035725236] [2024-11-17 03:44:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:53,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:53,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035725236] [2024-11-17 03:44:53,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035725236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:53,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:53,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:44:53,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479017501] [2024-11-17 03:44:53,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:53,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:44:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:44:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:44:53,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-17 03:44:53,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 69 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-17 03:44:53,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:53,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-17 03:44:53,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:54,020 INFO L124 PetriNetUnfolderBase]: 90/230 cut-off events. [2024-11-17 03:44:54,020 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 03:44:54,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 230 events. 90/230 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1036 event pairs, 80 based on Foata normal form. 40/261 useless extension candidates. Maximal degree in co-relation 371. Up to 166 conditions per place. [2024-11-17 03:44:54,028 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 15 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-11-17 03:44:54,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 89 flow [2024-11-17 03:44:54,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:44:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:44:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2024-11-17 03:44:54,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-11-17 03:44:54,045 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 69 flow. Second operand 2 states and 43 transitions. [2024-11-17 03:44:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 89 flow [2024-11-17 03:44:54,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:44:54,049 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2024-11-17 03:44:54,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-11-17 03:44:54,053 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2024-11-17 03:44:54,054 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2024-11-17 03:44:54,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-17 03:44:54,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:54,054 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:54,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:44:54,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:54,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:54,056 INFO L85 PathProgramCache]: Analyzing trace with hash -926693480, now seen corresponding path program 1 times [2024-11-17 03:44:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:54,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146760119] [2024-11-17 03:44:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:54,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:44:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:54,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:44:54,160 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:44:54,161 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:44:54,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:44:54,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:44:54,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-17 03:44:54,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:44:54,164 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:44:54,167 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:44:54,168 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:44:54,199 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:44:54,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 41 transitions, 102 flow [2024-11-17 03:44:54,228 INFO L124 PetriNetUnfolderBase]: 15/82 cut-off events. [2024-11-17 03:44:54,228 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:44:54,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 82 events. 15/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2024-11-17 03:44:54,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 41 transitions, 102 flow [2024-11-17 03:44:54,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 39 transitions, 96 flow [2024-11-17 03:44:54,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:44:54,233 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;@6a7121b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:44:54,233 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:44:54,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:44:54,239 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-17 03:44:54,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:44:54,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:54,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:54,240 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:54,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -10748961, now seen corresponding path program 1 times [2024-11-17 03:44:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116109412] [2024-11-17 03:44:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:54,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:54,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:54,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116109412] [2024-11-17 03:44:54,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116109412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:54,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:44:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575026245] [2024-11-17 03:44:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:54,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:44:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:44:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:44:54,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 03:44:54,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 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) [2024-11-17 03:44:54,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:54,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 03:44:54,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:54,658 INFO L124 PetriNetUnfolderBase]: 1719/2825 cut-off events. [2024-11-17 03:44:54,659 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-17 03:44:54,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5362 conditions, 2825 events. 1719/2825 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16579 event pairs, 1628 based on Foata normal form. 364/3081 useless extension candidates. Maximal degree in co-relation 1470. Up to 2416 conditions per place. [2024-11-17 03:44:54,685 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-17 03:44:54,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 128 flow [2024-11-17 03:44:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:44:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:44:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 53 transitions. [2024-11-17 03:44:54,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6463414634146342 [2024-11-17 03:44:54,688 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 96 flow. Second operand 2 states and 53 transitions. [2024-11-17 03:44:54,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 128 flow [2024-11-17 03:44:54,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:44:54,693 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 85 flow [2024-11-17 03:44:54,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-11-17 03:44:54,694 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2024-11-17 03:44:54,696 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 85 flow [2024-11-17 03:44:54,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 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) [2024-11-17 03:44:54,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:54,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:54,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:44:54,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:54,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash 658242777, now seen corresponding path program 1 times [2024-11-17 03:44:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:54,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011189881] [2024-11-17 03:44:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:54,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:54,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:54,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011189881] [2024-11-17 03:44:54,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011189881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:54,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:54,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:44:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228874039] [2024-11-17 03:44:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:54,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:44:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:54,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:44:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:44:54,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-11-17 03:44:54,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-17 03:44:54,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:54,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-11-17 03:44:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:55,125 INFO L124 PetriNetUnfolderBase]: 1719/2782 cut-off events. [2024-11-17 03:44:55,126 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-11-17 03:44:55,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5319 conditions, 2782 events. 1719/2782 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16016 event pairs, 1628 based on Foata normal form. 91/2765 useless extension candidates. Maximal degree in co-relation 5313. Up to 2415 conditions per place. [2024-11-17 03:44:55,144 INFO L140 encePairwiseOnDemand]: 39/41 looper letters, 19 selfloop transitions, 1 changer transitions 1/33 dead transitions. [2024-11-17 03:44:55,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 125 flow [2024-11-17 03:44:55,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:44:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:44:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-11-17 03:44:55,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-11-17 03:44:55,148 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 85 flow. Second operand 3 states and 61 transitions. [2024-11-17 03:44:55,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 125 flow [2024-11-17 03:44:55,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 125 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:44:55,151 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 83 flow [2024-11-17 03:44:55,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-17 03:44:55,153 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-11-17 03:44:55,154 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 83 flow [2024-11-17 03:44:55,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-11-17 03:44:55,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:55,155 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:55,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:44:55,155 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:55,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 658243618, now seen corresponding path program 1 times [2024-11-17 03:44:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28925754] [2024-11-17 03:44:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:44:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379125710] [2024-11-17 03:44:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:55,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:55,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:44:55,189 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) [2024-11-17 03:44:55,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:44:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:55,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:44:55,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:44:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:55,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:44:55,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:55,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28925754] [2024-11-17 03:44:55,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:44:55,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379125710] [2024-11-17 03:44:55,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379125710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:55,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:55,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:44:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368989769] [2024-11-17 03:44:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:55,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:44:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:44:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:44:55,322 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-11-17 03:44:55,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-17 03:44:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-11-17 03:44:55,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:55,641 INFO L124 PetriNetUnfolderBase]: 1571/2485 cut-off events. [2024-11-17 03:44:55,641 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-17 03:44:55,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4850 conditions, 2485 events. 1571/2485 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13258 event pairs, 304 based on Foata normal form. 91/2561 useless extension candidates. Maximal degree in co-relation 4843. Up to 1877 conditions per place. [2024-11-17 03:44:55,663 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 31 selfloop transitions, 3 changer transitions 15/61 dead transitions. [2024-11-17 03:44:55,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 251 flow [2024-11-17 03:44:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:44:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:44:55,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-17 03:44:55,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902439024390244 [2024-11-17 03:44:55,667 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 83 flow. Second operand 5 states and 121 transitions. [2024-11-17 03:44:55,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 251 flow [2024-11-17 03:44:55,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:44:55,669 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 109 flow [2024-11-17 03:44:55,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2024-11-17 03:44:55,670 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2024-11-17 03:44:55,670 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 109 flow [2024-11-17 03:44:55,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-17 03:44:55,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:55,671 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:55,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:44:55,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:44:55,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:55,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:55,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1916549983, now seen corresponding path program 1 times [2024-11-17 03:44:55,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:55,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967418791] [2024-11-17 03:44:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:55,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:44:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:44:55,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:44:55,924 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:44:55,924 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:44:55,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:44:55,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:44:55,925 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-17 03:44:55,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:44:55,925 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-17 03:44:55,926 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:44:55,926 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:44:55,956 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:44:55,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 134 flow [2024-11-17 03:44:55,969 INFO L124 PetriNetUnfolderBase]: 20/112 cut-off events. [2024-11-17 03:44:55,969 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-17 03:44:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 112 events. 20/112 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 281 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 103. Up to 8 conditions per place. [2024-11-17 03:44:55,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 134 flow [2024-11-17 03:44:55,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 127 flow [2024-11-17 03:44:55,973 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:44:55,973 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;@6a7121b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:44:55,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:44:55,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:44:55,977 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-17 03:44:55,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:44:55,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:55,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:55,978 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:55,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1475208287, now seen corresponding path program 1 times [2024-11-17 03:44:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486768966] [2024-11-17 03:44:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486768966] [2024-11-17 03:44:56,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486768966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:56,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:44:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222027839] [2024-11-17 03:44:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:56,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:44:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:44:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:44:56,006 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-17 03:44:56,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-17 03:44:56,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:56,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-17 03:44:56,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:44:59,479 INFO L124 PetriNetUnfolderBase]: 23832/33650 cut-off events. [2024-11-17 03:44:59,479 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-11-17 03:44:59,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65187 conditions, 33650 events. 23832/33650 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 220193 event pairs, 23012 based on Foata normal form. 3280/35931 useless extension candidates. Maximal degree in co-relation 18927. Up to 30118 conditions per place. [2024-11-17 03:44:59,788 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 27 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2024-11-17 03:44:59,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 171 flow [2024-11-17 03:44:59,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:44:59,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:44:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 63 transitions. [2024-11-17 03:44:59,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-17 03:44:59,792 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 127 flow. Second operand 2 states and 63 transitions. [2024-11-17 03:44:59,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 171 flow [2024-11-17 03:44:59,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 166 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-17 03:44:59,825 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 112 flow [2024-11-17 03:44:59,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-17 03:44:59,827 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-17 03:44:59,828 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 112 flow [2024-11-17 03:44:59,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-11-17 03:44:59,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:44:59,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:44:59,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:44:59,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:44:59,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:44:59,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1560949895, now seen corresponding path program 1 times [2024-11-17 03:44:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:44:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120976403] [2024-11-17 03:44:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:44:59,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:44:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:44:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:44:59,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:44:59,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120976403] [2024-11-17 03:44:59,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120976403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:44:59,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:44:59,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:44:59,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795051147] [2024-11-17 03:44:59,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:44:59,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:44:59,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:44:59,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:44:59,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:44:59,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-17 03:44:59,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 112 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) [2024-11-17 03:44:59,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:44:59,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-17 03:44:59,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:02,457 INFO L124 PetriNetUnfolderBase]: 23832/33283 cut-off events. [2024-11-17 03:45:02,457 INFO L125 PetriNetUnfolderBase]: For 1285/1285 co-relation queries the response was YES. [2024-11-17 03:45:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64496 conditions, 33283 events. 23832/33283 cut-off events. For 1285/1285 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 213254 event pairs, 23012 based on Foata normal form. 820/33104 useless extension candidates. Maximal degree in co-relation 64488. Up to 30117 conditions per place. [2024-11-17 03:45:02,626 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 25 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-17 03:45:02,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 164 flow [2024-11-17 03:45:02,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:45:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:45:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-17 03:45:02,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4965986394557823 [2024-11-17 03:45:02,628 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 112 flow. Second operand 3 states and 73 transitions. [2024-11-17 03:45:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 164 flow [2024-11-17 03:45:02,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:45:02,632 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 110 flow [2024-11-17 03:45:02,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-17 03:45:02,633 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-11-17 03:45:02,633 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 110 flow [2024-11-17 03:45:02,633 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) [2024-11-17 03:45:02,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:02,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:02,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:45:02,634 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:45:02,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1560949054, now seen corresponding path program 1 times [2024-11-17 03:45:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443910661] [2024-11-17 03:45:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:45:02,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519052617] [2024-11-17 03:45:02,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:02,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:02,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:02,648 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) [2024-11-17 03:45:02,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:45:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:02,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 03:45:02,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:02,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:45:02,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443910661] [2024-11-17 03:45:02,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:45:02,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519052617] [2024-11-17 03:45:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519052617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:02,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:02,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:45:02,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286976348] [2024-11-17 03:45:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:02,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:45:02,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:45:02,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:45:02,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-17 03:45:02,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:02,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:02,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-17 03:45:02,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:04,493 INFO L124 PetriNetUnfolderBase]: 22712/29866 cut-off events. [2024-11-17 03:45:04,493 INFO L125 PetriNetUnfolderBase]: For 619/619 co-relation queries the response was YES. [2024-11-17 03:45:04,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59881 conditions, 29866 events. 22712/29866 cut-off events. For 619/619 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 163857 event pairs, 5494 based on Foata normal form. 820/30635 useless extension candidates. Maximal degree in co-relation 59872. Up to 25235 conditions per place. [2024-11-17 03:45:04,674 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 41 selfloop transitions, 4 changer transitions 22/81 dead transitions. [2024-11-17 03:45:04,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 348 flow [2024-11-17 03:45:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:45:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:45:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-17 03:45:04,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6081632653061224 [2024-11-17 03:45:04,676 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 110 flow. Second operand 5 states and 149 transitions. [2024-11-17 03:45:04,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 348 flow [2024-11-17 03:45:04,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:04,678 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 145 flow [2024-11-17 03:45:04,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2024-11-17 03:45:04,679 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-11-17 03:45:04,679 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 145 flow [2024-11-17 03:45:04,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:45:04,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:04,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:04,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:45:04,886 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,SelfDestructingSolverStorable8 [2024-11-17 03:45:04,887 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:45:04,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:04,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1319932483, now seen corresponding path program 1 times [2024-11-17 03:45:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:04,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913763968] [2024-11-17 03:45:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:04,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:05,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913763968] [2024-11-17 03:45:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913763968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:45:05,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780014743] [2024-11-17 03:45:05,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:05,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:05,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:05,198 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) [2024-11-17 03:45:05,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:45:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:05,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:45:05,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:05,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:45:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:05,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780014743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:45:05,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:45:05,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-17 03:45:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110934411] [2024-11-17 03:45:05,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:45:05,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 03:45:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 03:45:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-17 03:45:05,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-17 03:45:05,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 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) [2024-11-17 03:45:05,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:05,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-17 03:45:05,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:08,199 INFO L124 PetriNetUnfolderBase]: 29780/40956 cut-off events. [2024-11-17 03:45:08,199 INFO L125 PetriNetUnfolderBase]: For 22279/22279 co-relation queries the response was YES. [2024-11-17 03:45:08,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96810 conditions, 40956 events. 29780/40956 cut-off events. For 22279/22279 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 258073 event pairs, 20698 based on Foata normal form. 0/39042 useless extension candidates. Maximal degree in co-relation 96798. Up to 33632 conditions per place. [2024-11-17 03:45:08,500 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 49 selfloop transitions, 5 changer transitions 4/70 dead transitions. [2024-11-17 03:45:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 339 flow [2024-11-17 03:45:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:45:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:45:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-11-17 03:45:08,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-11-17 03:45:08,501 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 145 flow. Second operand 6 states and 137 transitions. [2024-11-17 03:45:08,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 339 flow [2024-11-17 03:45:08,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-17 03:45:08,538 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 169 flow [2024-11-17 03:45:08,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2024-11-17 03:45:08,539 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-11-17 03:45:08,539 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 169 flow [2024-11-17 03:45:08,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 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) [2024-11-17 03:45:08,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:08,539 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:08,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:45:08,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:08,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:45:08,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1148600082, now seen corresponding path program 1 times [2024-11-17 03:45:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:08,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593837906] [2024-11-17 03:45:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 03:45:08,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910396716] [2024-11-17 03:45:08,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:08,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:08,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:45:08,764 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) [2024-11-17 03:45:08,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:45:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:08,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 03:45:08,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:45:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:08,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:45:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:45:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593837906] [2024-11-17 03:45:09,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 03:45:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910396716] [2024-11-17 03:45:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910396716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:45:09,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 03:45:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-17 03:45:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389625240] [2024-11-17 03:45:09,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 03:45:09,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:45:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:45:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:45:09,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-17 03:45:09,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-17 03:45:09,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:09,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-17 03:45:09,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:45:13,176 INFO L124 PetriNetUnfolderBase]: 37117/52190 cut-off events. [2024-11-17 03:45:13,177 INFO L125 PetriNetUnfolderBase]: For 26537/28127 co-relation queries the response was YES. [2024-11-17 03:45:13,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128104 conditions, 52190 events. 37117/52190 cut-off events. For 26537/28127 co-relation queries the response was YES. Maximal size of possible extension queue 1956. Compared 343053 event pairs, 2888 based on Foata normal form. 2142/54298 useless extension candidates. Maximal degree in co-relation 128090. Up to 13091 conditions per place. [2024-11-17 03:45:13,545 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 83 selfloop transitions, 24 changer transitions 38/159 dead transitions. [2024-11-17 03:45:13,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 159 transitions, 827 flow [2024-11-17 03:45:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:45:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:45:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-11-17 03:45:13,547 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6040816326530613 [2024-11-17 03:45:13,547 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 169 flow. Second operand 10 states and 296 transitions. [2024-11-17 03:45:13,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 159 transitions, 827 flow [2024-11-17 03:45:13,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 159 transitions, 826 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:45:13,587 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 389 flow [2024-11-17 03:45:13,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=389, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-17 03:45:13,588 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 22 predicate places. [2024-11-17 03:45:13,588 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 389 flow [2024-11-17 03:45:13,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2024-11-17 03:45:13,589 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:13,589 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:13,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:45:13,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:45:13,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:45:13,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:13,790 INFO L85 PathProgramCache]: Analyzing trace with hash 640798918, now seen corresponding path program 1 times [2024-11-17 03:45:13,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:13,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16952453] [2024-11-17 03:45:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:13,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:13,806 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:45:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:45:13,825 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:45:13,826 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:45:13,826 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-17 03:45:13,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-17 03:45:13,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-17 03:45:13,826 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-17 03:45:13,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:45:13,827 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-17 03:45:13,827 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:45:13,828 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-17 03:45:13,853 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:45:13,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 57 transitions, 170 flow [2024-11-17 03:45:13,863 INFO L124 PetriNetUnfolderBase]: 25/142 cut-off events. [2024-11-17 03:45:13,863 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-17 03:45:13,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 142 events. 25/142 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 339 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 143. Up to 10 conditions per place. [2024-11-17 03:45:13,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 57 transitions, 170 flow [2024-11-17 03:45:13,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 162 flow [2024-11-17 03:45:13,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:45:13,867 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;@6a7121b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:45:13,868 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:45:13,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:45:13,869 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-11-17 03:45:13,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:45:13,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:45:13,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:45:13,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:45:13,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:45:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1529458465, now seen corresponding path program 1 times [2024-11-17 03:45:13,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:45:13,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047492070] [2024-11-17 03:45:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:45:13,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:45:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:45:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:45:13,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:45:13,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047492070] [2024-11-17 03:45:13,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047492070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:45:13,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:45:13,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:45:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044159873] [2024-11-17 03:45:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:45:13,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:45:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:45:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:45:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:45:13,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-11-17 03:45:13,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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) [2024-11-17 03:45:13,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:45:13,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-11-17 03:45:13,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand