./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/fib_unsafe-5.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/fib_unsafe-5.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 e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:04:15,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:04:15,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:04:15,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:04:15,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:04:15,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:04:15,123 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:04:15,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:04:15,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:04:15,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:04:15,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:04:15,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:04:15,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:04:15,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:04:15,128 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:04:15,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:04:15,130 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:04:15,130 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:04:15,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:04:15,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:04:15,131 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:04:15,134 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:04:15,135 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:04:15,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:04:15,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:04:15,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:04:15,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:04:15,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:04:15,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:04:15,136 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:04:15,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:04:15,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:04:15,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:04:15,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:04:15,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:04:15,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:04:15,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:04:15,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:04:15,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:04:15,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:04:15,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:04:15,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:04:15,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0f90189cbea201dcd094fc9e84327a00ade17017ada90c5df84c8712afaf176 [2024-11-17 03:04:15,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:04:15,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:04:15,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:04:15,422 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:04:15,422 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:04:15,424 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-17 03:04:16,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:04:17,084 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:04:17,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/fib_unsafe-5.i [2024-11-17 03:04:17,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9bcbb4c/e5f313e38b134aef9d92898dd1a0811d/FLAG0de664c33 [2024-11-17 03:04:17,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a9bcbb4c/e5f313e38b134aef9d92898dd1a0811d [2024-11-17 03:04:17,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:04:17,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:04:17,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:04:17,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:04:17,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:04:17,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,137 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461a708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17, skipping insertion in model container [2024-11-17 03:04:17,137 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:04:17,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:04:17,571 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:04:17,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:04:17,698 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:04:17,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17 WrapperNode [2024-11-17 03:04:17,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:04:17,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:04:17,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:04:17,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:04:17,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,744 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-17 03:04:17,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:04:17,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:04:17,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:04:17,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:04:17,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,777 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 03:04:17,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,785 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:04:17,792 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:04:17,792 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:04:17,792 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:04:17,793 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (1/1) ... [2024-11-17 03:04:17,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:04:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:17,828 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 03:04:17,831 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 03:04:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 03:04:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 03:04:17,874 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 03:04:17,874 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 03:04:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:04:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:04:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:04:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:04:17,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:04:17,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:04:17,877 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 03:04:17,995 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:04:17,997 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:04:18,158 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:04:18,158 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:04:18,272 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:04:18,272 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:04:18,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:04:18 BoogieIcfgContainer [2024-11-17 03:04:18,272 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:04:18,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:04:18,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:04:18,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:04:18,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:04:17" (1/3) ... [2024-11-17 03:04:18,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596391c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:18, skipping insertion in model container [2024-11-17 03:04:18,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:04:17" (2/3) ... [2024-11-17 03:04:18,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2596391c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:04:18, skipping insertion in model container [2024-11-17 03:04:18,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:04:18" (3/3) ... [2024-11-17 03:04:18,282 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2024-11-17 03:04:18,299 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:04:18,299 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-17 03:04:18,299 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:04:18,332 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:04:18,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:04:18,402 INFO L124 PetriNetUnfolderBase]: 8/41 cut-off events. [2024-11-17 03:04:18,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:18,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 41 events. 8/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-17 03:04:18,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 43 transitions, 94 flow [2024-11-17 03:04:18,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 41 transitions, 88 flow [2024-11-17 03:04:18,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:04:18,426 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;@4c253385, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:04:18,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-17 03:04:18,448 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:04:18,448 INFO L124 PetriNetUnfolderBase]: 8/38 cut-off events. [2024-11-17 03:04:18,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:18,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:18,451 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:18,452 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 03:04:18,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1705527034, now seen corresponding path program 1 times [2024-11-17 03:04:18,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:18,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65889425] [2024-11-17 03:04:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:18,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:18,679 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 03:04:18,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:18,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65889425] [2024-11-17 03:04:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65889425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:04:18,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:04:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631613224] [2024-11-17 03:04:18,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:18,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:04:18,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:04:18,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:04:18,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-17 03:04:18,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 03:04:18,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:18,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-17 03:04:18,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:18,966 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:04:18,966 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:04:18,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 519 events. 265/519 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2572 event pairs, 183 based on Foata normal form. 114/597 useless extension candidates. Maximal degree in co-relation 922. Up to 406 conditions per place. [2024-11-17 03:04:18,977 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 22 selfloop transitions, 0 changer transitions 1/35 dead transitions. [2024-11-17 03:04:18,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 122 flow [2024-11-17 03:04:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:04:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:04:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-17 03:04:18,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-17 03:04:18,992 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 88 flow. Second operand 2 states and 56 transitions. [2024-11-17 03:04:18,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 122 flow [2024-11-17 03:04:18,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:04:18,998 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 72 flow [2024-11-17 03:04:19,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-17 03:04:19,005 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-17 03:04:19,006 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 72 flow [2024-11-17 03:04:19,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 03:04:19,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:19,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:19,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:04:19,007 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 03:04:19,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:19,009 INFO L85 PathProgramCache]: Analyzing trace with hash 869894088, now seen corresponding path program 1 times [2024-11-17 03:04:19,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:19,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671644556] [2024-11-17 03:04:19,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:19,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:19,157 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 03:04:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:19,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671644556] [2024-11-17 03:04:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671644556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:19,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:04:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:04:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224217048] [2024-11-17 03:04:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:19,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:04:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:04:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:04:19,162 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:19,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 03:04:19,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:19,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:19,293 INFO L124 PetriNetUnfolderBase]: 297/567 cut-off events. [2024-11-17 03:04:19,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:04:19,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 567 events. 297/567 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2757 event pairs, 39 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 1030. Up to 353 conditions per place. [2024-11-17 03:04:19,303 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 30 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-17 03:04:19,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 154 flow [2024-11-17 03:04:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:04:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:04:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-17 03:04:19,308 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-11-17 03:04:19,308 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-11-17 03:04:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 154 flow [2024-11-17 03:04:19,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 154 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:04:19,311 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 84 flow [2024-11-17 03:04:19,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-17 03:04:19,313 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:04:19,315 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 84 flow [2024-11-17 03:04:19,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 03:04:19,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:19,316 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 03:04:19,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:04:19,316 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:19,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -584403430, now seen corresponding path program 1 times [2024-11-17 03:04:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723166921] [2024-11-17 03:04:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:19,439 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 03:04:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723166921] [2024-11-17 03:04:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723166921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675048592] [2024-11-17 03:04:19,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:19,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:19,444 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 03:04:19,445 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 03:04:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:19,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-17 03:04:19,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:04:19,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:04:19,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675048592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:04:19,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:04:19,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-17 03:04:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158610302] [2024-11-17 03:04:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:04:19,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:04:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:04:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:04:19,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:19,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:19,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:19,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:19,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:19,645 INFO L124 PetriNetUnfolderBase]: 265/519 cut-off events. [2024-11-17 03:04:19,646 INFO L125 PetriNetUnfolderBase]: For 32/40 co-relation queries the response was YES. [2024-11-17 03:04:19,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 519 events. 265/519 cut-off events. For 32/40 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2529 event pairs, 183 based on Foata normal form. 16/491 useless extension candidates. Maximal degree in co-relation 987. Up to 405 conditions per place. [2024-11-17 03:04:19,649 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/34 dead transitions. [2024-11-17 03:04:19,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 128 flow [2024-11-17 03:04:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:04:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:04:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-11-17 03:04:19,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4806201550387597 [2024-11-17 03:04:19,651 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 84 flow. Second operand 3 states and 62 transitions. [2024-11-17 03:04:19,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 128 flow [2024-11-17 03:04:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:19,653 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 80 flow [2024-11-17 03:04:19,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-17 03:04:19,654 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-11-17 03:04:19,654 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 80 flow [2024-11-17 03:04:19,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:04:19,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:19,655 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 03:04:19,673 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 03:04:19,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:19,856 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 03:04:19,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -584402535, now seen corresponding path program 1 times [2024-11-17 03:04:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425728476] [2024-11-17 03:04:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:19,907 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 03:04:19,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:19,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425728476] [2024-11-17 03:04:19,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425728476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:19,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603892785] [2024-11-17 03:04:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:19,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:19,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:19,911 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 03:04:19,913 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 03:04:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:19,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-17 03:04:19,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:20,056 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 03:04:20,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:20,093 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 03:04:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603892785] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:20,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:20,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-17 03:04:20,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93623518] [2024-11-17 03:04:20,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:20,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:04:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:04:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 03:04:20,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:20,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 03:04:20,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:20,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:20,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:20,282 INFO L124 PetriNetUnfolderBase]: 361/695 cut-off events. [2024-11-17 03:04:20,283 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-17 03:04:20,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1357 conditions, 695 events. 361/695 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3359 event pairs, 39 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1352. Up to 305 conditions per place. [2024-11-17 03:04:20,286 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 53 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2024-11-17 03:04:20,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 68 transitions, 272 flow [2024-11-17 03:04:20,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:04:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:04:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-11-17 03:04:20,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5387596899224806 [2024-11-17 03:04:20,292 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 80 flow. Second operand 6 states and 139 transitions. [2024-11-17 03:04:20,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 68 transitions, 272 flow [2024-11-17 03:04:20,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:20,294 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 115 flow [2024-11-17 03:04:20,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-17 03:04:20,296 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-17 03:04:20,296 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 115 flow [2024-11-17 03:04:20,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 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 03:04:20,297 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:20,297 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:20,313 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 03:04:20,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-17 03:04:20,502 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 03:04:20,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1788020337, now seen corresponding path program 2 times [2024-11-17 03:04:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841456843] [2024-11-17 03:04:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:20,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841456843] [2024-11-17 03:04:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841456843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344163289] [2024-11-17 03:04:20,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:04:20,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:20,619 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 03:04:20,620 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 03:04:20,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:04:20,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:20,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:04:20,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:20,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:20,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344163289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:20,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:20,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-17 03:04:20,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816978995] [2024-11-17 03:04:20,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:20,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:04:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:04:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:04:20,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:20,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 115 flow. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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 03:04:20,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:20,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:21,110 INFO L124 PetriNetUnfolderBase]: 553/1079 cut-off events. [2024-11-17 03:04:21,111 INFO L125 PetriNetUnfolderBase]: For 1792/1792 co-relation queries the response was YES. [2024-11-17 03:04:21,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1079 events. 553/1079 cut-off events. For 1792/1792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5302 event pairs, 39 based on Foata normal form. 96/1155 useless extension candidates. Maximal degree in co-relation 2393. Up to 305 conditions per place. [2024-11-17 03:04:21,118 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 101 selfloop transitions, 11 changer transitions 0/122 dead transitions. [2024-11-17 03:04:21,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 535 flow [2024-11-17 03:04:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 03:04:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-17 03:04:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-17 03:04:21,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-11-17 03:04:21,123 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 115 flow. Second operand 12 states and 274 transitions. [2024-11-17 03:04:21,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 535 flow [2024-11-17 03:04:21,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 527 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-17 03:04:21,129 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 191 flow [2024-11-17 03:04:21,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=191, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2024-11-17 03:04:21,130 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-17 03:04:21,131 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 191 flow [2024-11-17 03:04:21,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 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 03:04:21,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:21,131 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:21,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:04:21,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:21,333 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:21,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash -406525957, now seen corresponding path program 3 times [2024-11-17 03:04:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382864527] [2024-11-17 03:04:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:21,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:21,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382864527] [2024-11-17 03:04:21,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382864527] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:21,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734780251] [2024-11-17 03:04:21,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:04:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:21,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:21,612 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 03:04:21,613 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 03:04:21,725 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-17 03:04:21,726 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:21,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:04:21,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:21,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734780251] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:21,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-11-17 03:04:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448522383] [2024-11-17 03:04:21,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:21,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 03:04:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 03:04:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-17 03:04:21,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:21,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 191 flow. Second operand has 15 states, 15 states have (on average 14.866666666666667) internal successors, (223), 15 states have internal predecessors, (223), 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 03:04:21,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:21,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:21,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:22,264 INFO L124 PetriNetUnfolderBase]: 617/1207 cut-off events. [2024-11-17 03:04:22,265 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-11-17 03:04:22,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 1207 events. 617/1207 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5974 event pairs, 39 based on Foata normal form. 32/1219 useless extension candidates. Maximal degree in co-relation 3033. Up to 305 conditions per place. [2024-11-17 03:04:22,275 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 117 selfloop transitions, 13 changer transitions 0/140 dead transitions. [2024-11-17 03:04:22,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 659 flow [2024-11-17 03:04:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 03:04:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-17 03:04:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 314 transitions. [2024-11-17 03:04:22,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.521594684385382 [2024-11-17 03:04:22,278 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 191 flow. Second operand 14 states and 314 transitions. [2024-11-17 03:04:22,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 659 flow [2024-11-17 03:04:22,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 140 transitions, 619 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-17 03:04:22,292 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 203 flow [2024-11-17 03:04:22,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=203, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2024-11-17 03:04:22,293 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 32 predicate places. [2024-11-17 03:04:22,294 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 203 flow [2024-11-17 03:04:22,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.866666666666667) internal successors, (223), 15 states have internal predecessors, (223), 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 03:04:22,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:22,294 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:22,312 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 03:04:22,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:22,495 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:22,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1471118879, now seen corresponding path program 4 times [2024-11-17 03:04:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:22,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934132046] [2024-11-17 03:04:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:23,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934132046] [2024-11-17 03:04:23,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934132046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707295543] [2024-11-17 03:04:23,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:04:23,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:23,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:04:23,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:04:23,634 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:04:23,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:04:23,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-17 03:04:23,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 110 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:24,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:25,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707295543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:25,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:25,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 53 [2024-11-17 03:04:25,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565519073] [2024-11-17 03:04:25,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:25,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-17 03:04:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-17 03:04:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2455, Unknown=0, NotChecked=0, Total=2862 [2024-11-17 03:04:25,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:25,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 203 flow. Second operand has 54 states, 54 states have (on average 14.314814814814815) internal successors, (773), 54 states have internal predecessors, (773), 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 03:04:25,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:25,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:25,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:04:39,586 INFO L124 PetriNetUnfolderBase]: 12397/24562 cut-off events. [2024-11-17 03:04:39,587 INFO L125 PetriNetUnfolderBase]: For 29828/30054 co-relation queries the response was YES. [2024-11-17 03:04:39,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56398 conditions, 24562 events. 12397/24562 cut-off events. For 29828/30054 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 210543 event pairs, 313 based on Foata normal form. 0/22685 useless extension candidates. Maximal degree in co-relation 56381. Up to 4032 conditions per place. [2024-11-17 03:04:39,754 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 493 selfloop transitions, 445 changer transitions 613/1561 dead transitions. [2024-11-17 03:04:39,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1561 transitions, 8580 flow [2024-11-17 03:04:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-17 03:04:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2024-11-17 03:04:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 3261 transitions. [2024-11-17 03:04:39,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49566803465572273 [2024-11-17 03:04:39,765 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 203 flow. Second operand 153 states and 3261 transitions. [2024-11-17 03:04:39,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 1561 transitions, 8580 flow [2024-11-17 03:04:39,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1561 transitions, 7718 flow, removed 150 selfloop flow, removed 11 redundant places. [2024-11-17 03:04:39,847 INFO L231 Difference]: Finished difference. Result has 275 places, 533 transitions, 3747 flow [2024-11-17 03:04:39,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=153, PETRI_FLOW=3747, PETRI_PLACES=275, PETRI_TRANSITIONS=533} [2024-11-17 03:04:39,851 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-11-17 03:04:39,851 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 533 transitions, 3747 flow [2024-11-17 03:04:39,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 14.314814814814815) internal successors, (773), 54 states have internal predecessors, (773), 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 03:04:39,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:04:39,852 INFO L204 CegarLoopForPetriNet]: trace histogram [13, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:04:39,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:04:40,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:40,053 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-17 03:04:40,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:04:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 443950672, now seen corresponding path program 1 times [2024-11-17 03:04:40,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:04:40,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819180061] [2024-11-17 03:04:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:40,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:04:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:41,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:04:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819180061] [2024-11-17 03:04:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819180061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:04:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109447359] [2024-11-17 03:04:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:04:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:04:41,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:04:41,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:04:41,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:04:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:04:41,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-17 03:04:41,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:04:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 100 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:41,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:04:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:04:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109447359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:04:42,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:04:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 60 [2024-11-17 03:04:42,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011905637] [2024-11-17 03:04:42,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:04:42,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-17 03:04:42,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:04:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-17 03:04:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=3217, Unknown=0, NotChecked=0, Total=3660 [2024-11-17 03:04:42,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-17 03:04:42,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 533 transitions, 3747 flow. Second operand has 61 states, 61 states have (on average 14.360655737704919) internal successors, (876), 61 states have internal predecessors, (876), 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 03:04:42,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:04:42,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-17 03:04:42,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand