./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:52:56,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:52:56,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:52:56,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:52:56,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:52:56,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:52:56,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:52:56,438 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:52:56,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:52:56,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:52:56,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:52:56,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:52:56,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:52:56,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:52:56,442 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:52:56,444 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:52:56,445 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:52:56,445 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:52:56,445 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:52:56,445 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:52:56,446 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:52:56,449 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:52:56,450 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:52:56,450 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:52:56,450 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:52:56,450 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:52:56,451 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:52:56,451 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:52:56,451 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:52:56,451 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:52:56,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:52:56,452 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:52:56,452 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:52:56,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:52:56,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:52:56,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:52:56,455 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:52:56,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:52:56,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:52:56,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:52:56,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:52:56,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:52:56,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-20 17:52:56,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:52:56,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:52:56,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:52:56,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:52:56,765 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:52:56,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-20 17:52:58,136 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:52:58,464 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:52:58,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-20 17:52:58,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e35fd0f/e713cf803553474b8afac7747a8aea2f/FLAG55d346de8 [2024-11-20 17:52:58,703 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e35fd0f/e713cf803553474b8afac7747a8aea2f [2024-11-20 17:52:58,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:52:58,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:52:58,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:52:58,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:52:58,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:52:58,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:58" (1/1) ... [2024-11-20 17:52:58,716 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35da138a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:58, skipping insertion in model container [2024-11-20 17:52:58,716 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:58" (1/1) ... [2024-11-20 17:52:58,766 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:52:59,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:52:59,205 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:52:59,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:52:59,309 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:52:59,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59 WrapperNode [2024-11-20 17:52:59,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:52:59,312 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:52:59,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:52:59,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:52:59,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,331 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,358 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 85 [2024-11-20 17:52:59,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:52:59,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:52:59,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:52:59,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:52:59,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,374 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,390 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]. [2024-11-20 17:52:59,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:52:59,410 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:52:59,410 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:52:59,410 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:52:59,411 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (1/1) ... [2024-11-20 17:52:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:52:59,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:52:59,460 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) [2024-11-20 17:52:59,466 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 [2024-11-20 17:52:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:52:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 17:52:59,513 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 17:52:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 17:52:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 17:52:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:52:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:52:59,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:52:59,516 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:52:59,771 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:52:59,773 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:52:59,966 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:52:59,967 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:53:00,087 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:53:00,088 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:53:00,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:00 BoogieIcfgContainer [2024-11-20 17:53:00,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:53:00,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:53:00,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:53:00,094 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:53:00,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:58" (1/3) ... [2024-11-20 17:53:00,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef98367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:00, skipping insertion in model container [2024-11-20 17:53:00,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:59" (2/3) ... [2024-11-20 17:53:00,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef98367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:00, skipping insertion in model container [2024-11-20 17:53:00,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:00" (3/3) ... [2024-11-20 17:53:00,098 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-20 17:53:00,118 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:53:00,119 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-20 17:53:00,119 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:53:00,180 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:53:00,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-20 17:53:00,245 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-20 17:53:00,245 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:53:00,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-20 17:53:00,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-20 17:53:00,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-20 17:53:00,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:00,278 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;@58492877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:00,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-20 17:53:00,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:00,288 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-20 17:53:00,288 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 17:53:00,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:00,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:00,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:00,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash 338354967, now seen corresponding path program 1 times [2024-11-20 17:53:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:00,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468100041] [2024-11-20 17:53:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:00,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:00,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468100041] [2024-11-20 17:53:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468100041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:00,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:00,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:00,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943688288] [2024-11-20 17:53:00,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:00,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:00,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:00,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:00,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:00,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:00,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-20 17:53:00,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:00,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:00,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:01,096 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-20 17:53:01,097 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-20 17:53:01,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3097 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-20 17:53:01,111 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-20 17:53:01,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-20 17:53:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:53:01,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:53:01,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-20 17:53:01,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-20 17:53:01,128 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-20 17:53:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-20 17:53:01,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:01,136 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-20 17:53:01,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-20 17:53:01,144 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-20 17:53:01,144 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-20 17:53:01,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-20 17:53:01,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:01,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:01,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:53:01,146 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:01,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1898083594, now seen corresponding path program 1 times [2024-11-20 17:53:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:01,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127451752] [2024-11-20 17:53:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127451752] [2024-11-20 17:53:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127451752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:53:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757735742] [2024-11-20 17:53:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:01,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:01,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:01,429 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) [2024-11-20 17:53:01,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:53:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:01,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 17:53:01,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:01,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:01,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757735742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:01,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:53:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-20 17:53:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570808791] [2024-11-20 17:53:01,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:01,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:53:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:53:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:53:01,694 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-20 17:53:01,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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) [2024-11-20 17:53:01,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:01,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-20 17:53:01,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:02,060 INFO L124 PetriNetUnfolderBase]: 513/1033 cut-off events. [2024-11-20 17:53:02,060 INFO L125 PetriNetUnfolderBase]: For 156/166 co-relation queries the response was YES. [2024-11-20 17:53:02,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1033 events. 513/1033 cut-off events. For 156/166 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5859 event pairs, 81 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 853. Up to 332 conditions per place. [2024-11-20 17:53:02,075 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-20 17:53:02,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2024-11-20 17:53:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:53:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:53:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-20 17:53:02,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-11-20 17:53:02,080 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2024-11-20 17:53:02,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2024-11-20 17:53:02,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 17:53:02,088 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2024-11-20 17:53:02,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-20 17:53:02,089 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-20 17:53:02,090 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2024-11-20 17:53:02,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 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) [2024-11-20 17:53:02,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:02,090 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:02,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 17:53:02,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:02,291 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:02,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1289936521, now seen corresponding path program 2 times [2024-11-20 17:53:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:02,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940864603] [2024-11-20 17:53:02,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:02,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:02,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940864603] [2024-11-20 17:53:02,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940864603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:53:02,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880547900] [2024-11-20 17:53:02,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:53:02,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:02,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:02,468 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) [2024-11-20 17:53:02,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:53:02,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:53:02,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:53:02,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:53:02,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:02,611 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:02,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880547900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:02,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 17:53:02,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-20 17:53:02,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663542559] [2024-11-20 17:53:02,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:02,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:53:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:53:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:53:02,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:02,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-11-20 17:53:02,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:02,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:02,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:02,943 INFO L124 PetriNetUnfolderBase]: 403/865 cut-off events. [2024-11-20 17:53:02,943 INFO L125 PetriNetUnfolderBase]: For 558/568 co-relation queries the response was YES. [2024-11-20 17:53:02,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 865 events. 403/865 cut-off events. For 558/568 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4926 event pairs, 101 based on Foata normal form. 26/838 useless extension candidates. Maximal degree in co-relation 1319. Up to 362 conditions per place. [2024-11-20 17:53:02,950 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 77 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-11-20 17:53:02,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 99 transitions, 505 flow [2024-11-20 17:53:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:53:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:53:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-20 17:53:02,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-20 17:53:02,952 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 10 states and 185 transitions. [2024-11-20 17:53:02,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 99 transitions, 505 flow [2024-11-20 17:53:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 99 transitions, 485 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-20 17:53:02,959 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 214 flow [2024-11-20 17:53:02,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-20 17:53:02,960 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-20 17:53:02,960 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 214 flow [2024-11-20 17:53:02,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2024-11-20 17:53:02,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:02,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:02,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:03,161 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,SelfDestructingSolverStorable2 [2024-11-20 17:53:03,163 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:03,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash 84955400, now seen corresponding path program 1 times [2024-11-20 17:53:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543995507] [2024-11-20 17:53:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:03,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:03,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543995507] [2024-11-20 17:53:03,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543995507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:03,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:03,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:03,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622548500] [2024-11-20 17:53:03,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:03,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:03,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:03,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-20 17:53:03,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:03,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:03,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:03,511 INFO L124 PetriNetUnfolderBase]: 473/1010 cut-off events. [2024-11-20 17:53:03,511 INFO L125 PetriNetUnfolderBase]: For 986/1004 co-relation queries the response was YES. [2024-11-20 17:53:03,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1010 events. 473/1010 cut-off events. For 986/1004 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5894 event pairs, 154 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 1783. Up to 489 conditions per place. [2024-11-20 17:53:03,521 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 64 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-20 17:53:03,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 575 flow [2024-11-20 17:53:03,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:53:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:53:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-20 17:53:03,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-20 17:53:03,523 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 214 flow. Second operand 7 states and 132 transitions. [2024-11-20 17:53:03,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 575 flow [2024-11-20 17:53:03,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 558 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 17:53:03,533 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 262 flow [2024-11-20 17:53:03,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=262, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-11-20 17:53:03,534 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-20 17:53:03,535 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 262 flow [2024-11-20 17:53:03,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-20 17:53:03,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:03,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:03,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:53:03,536 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:03,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1662335674, now seen corresponding path program 1 times [2024-11-20 17:53:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:03,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942801161] [2024-11-20 17:53:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:03,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942801161] [2024-11-20 17:53:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942801161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:53:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324335438] [2024-11-20 17:53:03,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:03,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:03,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:03,633 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) [2024-11-20 17:53:03,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:53:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:03,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:53:03,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:03,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:03,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324335438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:03,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:53:03,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-20 17:53:03,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419390873] [2024-11-20 17:53:03,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:03,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:53:03,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:53:03,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:53:03,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:03,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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) [2024-11-20 17:53:03,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:03,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:03,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:04,149 INFO L124 PetriNetUnfolderBase]: 543/1153 cut-off events. [2024-11-20 17:53:04,150 INFO L125 PetriNetUnfolderBase]: For 1395/1419 co-relation queries the response was YES. [2024-11-20 17:53:04,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 1153 events. 543/1153 cut-off events. For 1395/1419 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6878 event pairs, 136 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2372. Up to 489 conditions per place. [2024-11-20 17:53:04,159 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-20 17:53:04,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 798 flow [2024-11-20 17:53:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:53:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:53:04,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-20 17:53:04,161 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-20 17:53:04,161 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 262 flow. Second operand 9 states and 169 transitions. [2024-11-20 17:53:04,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 798 flow [2024-11-20 17:53:04,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 782 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 17:53:04,172 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 312 flow [2024-11-20 17:53:04,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=312, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-20 17:53:04,174 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-20 17:53:04,175 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 312 flow [2024-11-20 17:53:04,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 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) [2024-11-20 17:53:04,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:04,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:04,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 17:53:04,376 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 [2024-11-20 17:53:04,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:04,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1032604834, now seen corresponding path program 1 times [2024-11-20 17:53:04,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:04,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643607692] [2024-11-20 17:53:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:04,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643607692] [2024-11-20 17:53:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643607692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869929000] [2024-11-20 17:53:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:04,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:04,452 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:04,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:04,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:04,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:04,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:04,646 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2024-11-20 17:53:04,647 INFO L125 PetriNetUnfolderBase]: For 1685/1707 co-relation queries the response was YES. [2024-11-20 17:53:04,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3390 conditions, 997 events. 473/997 cut-off events. For 1685/1707 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5551 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2138. Up to 522 conditions per place. [2024-11-20 17:53:04,655 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-20 17:53:04,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 576 flow [2024-11-20 17:53:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:53:04,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:53:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-20 17:53:04,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-20 17:53:04,657 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 312 flow. Second operand 6 states and 111 transitions. [2024-11-20 17:53:04,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 576 flow [2024-11-20 17:53:04,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 527 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-20 17:53:04,665 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 293 flow [2024-11-20 17:53:04,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-11-20 17:53:04,666 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-11-20 17:53:04,666 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 293 flow [2024-11-20 17:53:04,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:04,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:04,667 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:04,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:53:04,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1116409153, now seen corresponding path program 1 times [2024-11-20 17:53:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535978434] [2024-11-20 17:53:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:04,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:04,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535978434] [2024-11-20 17:53:04,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535978434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:04,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:04,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412571373] [2024-11-20 17:53:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:04,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:04,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:04,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:04,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:04,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:04,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:04,936 INFO L124 PetriNetUnfolderBase]: 487/1034 cut-off events. [2024-11-20 17:53:04,937 INFO L125 PetriNetUnfolderBase]: For 1802/1834 co-relation queries the response was YES. [2024-11-20 17:53:04,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3344 conditions, 1034 events. 487/1034 cut-off events. For 1802/1834 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5818 event pairs, 161 based on Foata normal form. 0/988 useless extension candidates. Maximal degree in co-relation 2151. Up to 546 conditions per place. [2024-11-20 17:53:04,945 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-20 17:53:04,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 582 flow [2024-11-20 17:53:04,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:53:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:53:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-20 17:53:04,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-20 17:53:04,947 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 293 flow. Second operand 6 states and 115 transitions. [2024-11-20 17:53:04,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 582 flow [2024-11-20 17:53:04,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 553 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:04,954 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 310 flow [2024-11-20 17:53:04,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2024-11-20 17:53:04,955 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-20 17:53:04,955 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 310 flow [2024-11-20 17:53:04,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:04,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:04,956 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:04,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:53:04,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:04,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash 6215880, now seen corresponding path program 2 times [2024-11-20 17:53:04,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:04,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499262710] [2024-11-20 17:53:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:04,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:53:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499262710] [2024-11-20 17:53:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499262710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:53:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648316953] [2024-11-20 17:53:05,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:53:05,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:05,095 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) [2024-11-20 17:53:05,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:53:05,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:53:05,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:53:05,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 17:53:05,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:05,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648316953] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:05,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:53:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-20 17:53:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730551274] [2024-11-20 17:53:05,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:05,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 17:53:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:53:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 17:53:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-20 17:53:05,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-11-20 17:53:05,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 310 flow. Second operand has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 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) [2024-11-20 17:53:05,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:05,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-11-20 17:53:05,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:06,181 INFO L124 PetriNetUnfolderBase]: 513/995 cut-off events. [2024-11-20 17:53:06,181 INFO L125 PetriNetUnfolderBase]: For 2152/2186 co-relation queries the response was YES. [2024-11-20 17:53:06,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 995 events. 513/995 cut-off events. For 2152/2186 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5229 event pairs, 63 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 2830. Up to 188 conditions per place. [2024-11-20 17:53:06,192 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 124 selfloop transitions, 23 changer transitions 0/155 dead transitions. [2024-11-20 17:53:06,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 155 transitions, 1204 flow [2024-11-20 17:53:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 17:53:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-20 17:53:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 247 transitions. [2024-11-20 17:53:06,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-11-20 17:53:06,196 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 310 flow. Second operand 14 states and 247 transitions. [2024-11-20 17:53:06,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 155 transitions, 1204 flow [2024-11-20 17:53:06,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 1155 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:06,207 INFO L231 Difference]: Finished difference. Result has 84 places, 58 transitions, 407 flow [2024-11-20 17:53:06,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=407, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2024-11-20 17:53:06,208 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2024-11-20 17:53:06,208 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 407 flow [2024-11-20 17:53:06,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.35) internal successors, (207), 20 states have internal predecessors, (207), 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) [2024-11-20 17:53:06,209 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:06,209 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:06,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 17:53:06,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:53:06,410 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:06,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1678074481, now seen corresponding path program 1 times [2024-11-20 17:53:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:53:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341176298] [2024-11-20 17:53:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:53:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:06,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:06,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 17:53:06,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:06,465 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-20 17:53:06,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-20 17:53:06,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:53:06,468 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-20 17:53:06,509 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:53:06,509 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:53:06,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:53:06 BasicIcfg [2024-11-20 17:53:06,516 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:53:06,516 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:53:06,516 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:53:06,516 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:53:06,517 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:00" (3/4) ... [2024-11-20 17:53:06,519 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 17:53:06,520 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:53:06,522 INFO L158 Benchmark]: Toolchain (without parser) took 7814.28ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 122.0MB in the beginning and 112.8MB in the end (delta: 9.2MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,522 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:06,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.52ms. Allocated memory is still 153.1MB. Free memory was 122.0MB in the beginning and 99.1MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.07ms. Allocated memory is still 153.1MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,523 INFO L158 Benchmark]: Boogie Preprocessor took 49.66ms. Allocated memory is still 153.1MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,523 INFO L158 Benchmark]: RCFGBuilder took 678.59ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 107.4MB in the end (delta: -12.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,525 INFO L158 Benchmark]: TraceAbstraction took 6424.96ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 106.3MB in the beginning and 112.8MB in the end (delta: -6.5MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2024-11-20 17:53:06,525 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 234.9MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:06,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.52ms. Allocated memory is still 153.1MB. Free memory was 122.0MB in the beginning and 99.1MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.07ms. Allocated memory is still 153.1MB. Free memory was 99.1MB in the beginning and 97.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.66ms. Allocated memory is still 153.1MB. Free memory was 97.0MB in the beginning and 94.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 678.59ms. Allocated memory is still 153.1MB. Free memory was 94.9MB in the beginning and 107.4MB in the end (delta: -12.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6424.96ms. Allocated memory was 153.1MB in the beginning and 234.9MB in the end (delta: 81.8MB). Free memory was 106.3MB in the beginning and 112.8MB in the end (delta: -6.5MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 234.9MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=-2] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=-2, t2=-1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1024 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1010 mSDsluCounter, 175 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1702 IncrementalHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 38 mSDtfsCounter, 1702 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 165 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=407occurred in iteration=8, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 560 SizeOfPredicates, 18 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 5/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-20 17:53:06,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:53:08,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:53:08,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-20 17:53:08,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:53:08,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:53:08,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:53:08,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:53:08,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:53:08,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:53:08,912 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:53:08,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:53:08,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:53:08,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:53:08,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:53:08,915 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:53:08,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:53:08,915 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:53:08,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:53:08,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:53:08,916 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:53:08,916 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:53:08,917 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:53:08,918 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:53:08,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:53:08,919 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:53:08,919 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-20 17:53:08,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:53:08,919 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-20 17:53:08,920 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:53:08,920 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:53:08,920 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:53:08,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:53:08,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:53:08,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:53:08,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:53:08,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:08,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:53:08,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:53:08,924 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-20 17:53:08,924 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-20 17:53:08,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:53:08,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:53:08,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:53:08,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:53:08,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2024-11-20 17:53:09,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:53:09,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:53:09,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:53:09,300 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:53:09,300 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:53:09,302 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-20 17:53:10,924 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:53:11,178 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:53:11,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2024-11-20 17:53:11,194 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee10ac12/c2621f07f8c54909959194ddaf5dc729/FLAGd75d21831 [2024-11-20 17:53:11,501 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ee10ac12/c2621f07f8c54909959194ddaf5dc729 [2024-11-20 17:53:11,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:53:11,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:53:11,507 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:11,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:53:11,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:53:11,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:11" (1/1) ... [2024-11-20 17:53:11,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154bbf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:11, skipping insertion in model container [2024-11-20 17:53:11,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:11" (1/1) ... [2024-11-20 17:53:11,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:53:11,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:12,009 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:53:12,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:53:12,124 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:53:12,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12 WrapperNode [2024-11-20 17:53:12,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:53:12,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:12,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:53:12,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:53:12,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,194 INFO L138 Inliner]: procedures = 170, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 86 [2024-11-20 17:53:12,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:53:12,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:53:12,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:53:12,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:53:12,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,237 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]. [2024-11-20 17:53:12,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:53:12,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:53:12,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:53:12,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:53:12,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (1/1) ... [2024-11-20 17:53:12,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:53:12,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:53:12,310 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) [2024-11-20 17:53:12,315 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 [2024-11-20 17:53:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:53:12,361 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 17:53:12,361 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 17:53:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 17:53:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 17:53:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-20 17:53:12,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:53:12,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:53:12,364 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:53:12,540 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:53:12,542 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:53:12,758 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:53:12,758 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:53:12,922 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:53:12,922 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 17:53:12,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:12 BoogieIcfgContainer [2024-11-20 17:53:12,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:53:12,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:53:12,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:53:12,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:53:12,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:11" (1/3) ... [2024-11-20 17:53:12,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be2b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:12, skipping insertion in model container [2024-11-20 17:53:12,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:12" (2/3) ... [2024-11-20 17:53:12,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be2b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:12, skipping insertion in model container [2024-11-20 17:53:12,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:12" (3/3) ... [2024-11-20 17:53:12,938 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2024-11-20 17:53:12,956 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:53:12,956 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-20 17:53:12,956 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:53:13,013 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 17:53:13,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-20 17:53:13,087 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-20 17:53:13,089 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 17:53:13,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-20 17:53:13,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-20 17:53:13,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 82 flow [2024-11-20 17:53:13,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:53:13,121 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;@4e9896b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:53:13,121 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-20 17:53:13,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:53:13,132 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-20 17:53:13,132 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 17:53:13,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:13,133 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:13,133 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:13,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:13,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2043240985, now seen corresponding path program 1 times [2024-11-20 17:53:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:13,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359645371] [2024-11-20 17:53:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:13,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:13,164 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:13,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-20 17:53:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:13,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:53:13,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:13,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:13,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359645371] [2024-11-20 17:53:13,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359645371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:13,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:13,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:13,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822857014] [2024-11-20 17:53:13,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:13,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:13,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:13,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:13,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-20 17:53:13,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:13,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:13,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:13,810 INFO L124 PetriNetUnfolderBase]: 287/602 cut-off events. [2024-11-20 17:53:13,810 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-20 17:53:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 602 events. 287/602 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3114 event pairs, 42 based on Foata normal form. 112/658 useless extension candidates. Maximal degree in co-relation 1048. Up to 215 conditions per place. [2024-11-20 17:53:13,818 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 58 selfloop transitions, 8 changer transitions 0/74 dead transitions. [2024-11-20 17:53:13,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 74 transitions, 307 flow [2024-11-20 17:53:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:53:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:53:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-11-20 17:53:13,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-20 17:53:13,832 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 82 flow. Second operand 7 states and 152 transitions. [2024-11-20 17:53:13,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 74 transitions, 307 flow [2024-11-20 17:53:13,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:13,845 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 111 flow [2024-11-20 17:53:13,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-20 17:53:13,850 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-20 17:53:13,851 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 111 flow [2024-11-20 17:53:13,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-20 17:53:13,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:13,851 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:13,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-20 17:53:14,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:14,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:14,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1085024694, now seen corresponding path program 1 times [2024-11-20 17:53:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:14,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326200965] [2024-11-20 17:53:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:14,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:14,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:14,058 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:14,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-20 17:53:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:14,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:53:14,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:14,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:14,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:14,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326200965] [2024-11-20 17:53:14,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326200965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:14,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:53:14,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2024-11-20 17:53:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623692807] [2024-11-20 17:53:14,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:14,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 17:53:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:14,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 17:53:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-20 17:53:14,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-20 17:53:14,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2024-11-20 17:53:14,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:14,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-20 17:53:14,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:14,804 INFO L124 PetriNetUnfolderBase]: 513/1019 cut-off events. [2024-11-20 17:53:14,805 INFO L125 PetriNetUnfolderBase]: For 115/117 co-relation queries the response was YES. [2024-11-20 17:53:14,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2281 conditions, 1019 events. 513/1019 cut-off events. For 115/117 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5773 event pairs, 45 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 850. Up to 332 conditions per place. [2024-11-20 17:53:14,816 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 73 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-11-20 17:53:14,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 98 transitions, 438 flow [2024-11-20 17:53:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:53:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:53:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-11-20 17:53:14,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5380116959064327 [2024-11-20 17:53:14,820 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 111 flow. Second operand 9 states and 184 transitions. [2024-11-20 17:53:14,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 98 transitions, 438 flow [2024-11-20 17:53:14,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 98 transitions, 427 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 17:53:14,831 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 170 flow [2024-11-20 17:53:14,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=170, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-11-20 17:53:14,833 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2024-11-20 17:53:14,833 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 170 flow [2024-11-20 17:53:14,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 10 states have internal predecessors, (121), 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) [2024-11-20 17:53:14,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:14,834 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:14,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-20 17:53:15,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:15,035 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:15,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 722987065, now seen corresponding path program 2 times [2024-11-20 17:53:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558073652] [2024-11-20 17:53:15,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:53:15,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:15,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:15,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-20 17:53:15,131 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:53:15,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:53:15,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:53:15,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:15,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:15,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558073652] [2024-11-20 17:53:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558073652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:15,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:53:15,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-20 17:53:15,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155583018] [2024-11-20 17:53:15,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:15,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:53:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:53:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:53:15,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:15,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 170 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:53:15,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:15,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:15,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:15,871 INFO L124 PetriNetUnfolderBase]: 403/859 cut-off events. [2024-11-20 17:53:15,872 INFO L125 PetriNetUnfolderBase]: For 545/555 co-relation queries the response was YES. [2024-11-20 17:53:15,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 859 events. 403/859 cut-off events. For 545/555 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4866 event pairs, 25 based on Foata normal form. 26/834 useless extension candidates. Maximal degree in co-relation 1315. Up to 233 conditions per place. [2024-11-20 17:53:15,877 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-11-20 17:53:15,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 546 flow [2024-11-20 17:53:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 17:53:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-20 17:53:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 216 transitions. [2024-11-20 17:53:15,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-20 17:53:15,881 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 170 flow. Second operand 12 states and 216 transitions. [2024-11-20 17:53:15,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 546 flow [2024-11-20 17:53:15,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 526 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-20 17:53:15,893 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 228 flow [2024-11-20 17:53:15,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=228, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-11-20 17:53:15,894 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-11-20 17:53:15,894 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 228 flow [2024-11-20 17:53:15,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:53:15,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:15,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:15,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:16,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:16,096 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:16,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2097878986, now seen corresponding path program 1 times [2024-11-20 17:53:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53148429] [2024-11-20 17:53:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:16,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:16,100 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:16,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-20 17:53:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:16,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:53:16,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:16,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:16,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:16,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53148429] [2024-11-20 17:53:16,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53148429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:16,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:16,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958699086] [2024-11-20 17:53:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:16,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:16,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:16,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:16,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-20 17:53:16,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:16,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:16,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:16,448 INFO L124 PetriNetUnfolderBase]: 473/1018 cut-off events. [2024-11-20 17:53:16,449 INFO L125 PetriNetUnfolderBase]: For 1134/1152 co-relation queries the response was YES. [2024-11-20 17:53:16,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1018 events. 473/1018 cut-off events. For 1134/1152 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6020 event pairs, 136 based on Foata normal form. 0/961 useless extension candidates. Maximal degree in co-relation 1851. Up to 489 conditions per place. [2024-11-20 17:53:16,455 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 66 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-20 17:53:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 613 flow [2024-11-20 17:53:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:53:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:53:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-20 17:53:16,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49624060150375937 [2024-11-20 17:53:16,457 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 228 flow. Second operand 7 states and 132 transitions. [2024-11-20 17:53:16,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 613 flow [2024-11-20 17:53:16,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 582 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:16,462 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 267 flow [2024-11-20 17:53:16,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-11-20 17:53:16,463 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-11-20 17:53:16,463 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 267 flow [2024-11-20 17:53:16,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 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) [2024-11-20 17:53:16,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:16,463 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:16,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-20 17:53:16,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:16,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:16,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 608753350, now seen corresponding path program 1 times [2024-11-20 17:53:16,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:16,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298382181] [2024-11-20 17:53:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:16,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:16,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:16,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:16,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-20 17:53:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:16,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:53:16,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:16,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:16,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298382181] [2024-11-20 17:53:16,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298382181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:16,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:53:16,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-20 17:53:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652789382] [2024-11-20 17:53:16,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:16,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:53:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:53:16,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:53:16,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:16,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 267 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-11-20 17:53:16,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:16,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:16,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:17,292 INFO L124 PetriNetUnfolderBase]: 543/1151 cut-off events. [2024-11-20 17:53:17,293 INFO L125 PetriNetUnfolderBase]: For 1508/1532 co-relation queries the response was YES. [2024-11-20 17:53:17,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1151 events. 543/1151 cut-off events. For 1508/1532 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6885 event pairs, 154 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2406. Up to 489 conditions per place. [2024-11-20 17:53:17,302 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 87 selfloop transitions, 15 changer transitions 0/112 dead transitions. [2024-11-20 17:53:17,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 112 transitions, 837 flow [2024-11-20 17:53:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 17:53:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 17:53:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-11-20 17:53:17,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-11-20 17:53:17,303 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 267 flow. Second operand 9 states and 169 transitions. [2024-11-20 17:53:17,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 112 transitions, 837 flow [2024-11-20 17:53:17,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 112 transitions, 821 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 17:53:17,312 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 316 flow [2024-11-20 17:53:17,312 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=316, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-11-20 17:53:17,314 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-20 17:53:17,315 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 316 flow [2024-11-20 17:53:17,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-11-20 17:53:17,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:17,315 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:17,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-20 17:53:17,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:17,517 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:17,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash 139544498, now seen corresponding path program 1 times [2024-11-20 17:53:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:17,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887950983] [2024-11-20 17:53:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:17,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:17,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:17,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-20 17:53:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:17,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:53:17,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:17,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:17,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887950983] [2024-11-20 17:53:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887950983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:17,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866098708] [2024-11-20 17:53:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:17,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:17,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:17,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:17,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:17,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:17,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:17,853 INFO L124 PetriNetUnfolderBase]: 473/997 cut-off events. [2024-11-20 17:53:17,853 INFO L125 PetriNetUnfolderBase]: For 1781/1803 co-relation queries the response was YES. [2024-11-20 17:53:17,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 997 events. 473/997 cut-off events. For 1781/1803 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5565 event pairs, 150 based on Foata normal form. 14/963 useless extension candidates. Maximal degree in co-relation 2144. Up to 522 conditions per place. [2024-11-20 17:53:17,861 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 55 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-11-20 17:53:17,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 583 flow [2024-11-20 17:53:17,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:53:17,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:53:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-20 17:53:17,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-11-20 17:53:17,862 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 316 flow. Second operand 6 states and 111 transitions. [2024-11-20 17:53:17,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 583 flow [2024-11-20 17:53:17,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 534 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-20 17:53:17,869 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 297 flow [2024-11-20 17:53:17,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-11-20 17:53:17,869 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-11-20 17:53:17,869 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 297 flow [2024-11-20 17:53:17,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:17,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:17,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:17,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:18,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,070 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:18,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 106162721, now seen corresponding path program 1 times [2024-11-20 17:53:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:18,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518916331] [2024-11-20 17:53:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:18,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:18,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:18,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-20 17:53:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:53:18,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 17:53:18,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:18,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:53:18,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:18,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518916331] [2024-11-20 17:53:18,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518916331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:53:18,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:53:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:53:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876519332] [2024-11-20 17:53:18,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:53:18,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:53:18,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:53:18,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:53:18,182 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-20 17:53:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:18,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:18,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-20 17:53:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:18,411 INFO L124 PetriNetUnfolderBase]: 487/1036 cut-off events. [2024-11-20 17:53:18,412 INFO L125 PetriNetUnfolderBase]: For 1854/1884 co-relation queries the response was YES. [2024-11-20 17:53:18,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1036 events. 487/1036 cut-off events. For 1854/1884 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5875 event pairs, 152 based on Foata normal form. 0/990 useless extension candidates. Maximal degree in co-relation 2161. Up to 546 conditions per place. [2024-11-20 17:53:18,420 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 60 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-20 17:53:18,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 590 flow [2024-11-20 17:53:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:53:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:53:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-20 17:53:18,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-11-20 17:53:18,422 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 297 flow. Second operand 6 states and 115 transitions. [2024-11-20 17:53:18,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 590 flow [2024-11-20 17:53:18,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 81 transitions, 551 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-20 17:53:18,429 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 306 flow [2024-11-20 17:53:18,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-11-20 17:53:18,431 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2024-11-20 17:53:18,431 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 306 flow [2024-11-20 17:53:18,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2024-11-20 17:53:18,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:18,432 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:18,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-20 17:53:18,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,636 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:18,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1690498890, now seen corresponding path program 2 times [2024-11-20 17:53:18,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:18,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240768117] [2024-11-20 17:53:18,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 17:53:18,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:18,639 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:18,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-20 17:53:18,679 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 17:53:18,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 17:53:18,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 17:53:18,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:53:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:18,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:53:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:53:18,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-20 17:53:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240768117] [2024-11-20 17:53:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240768117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:53:18,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 17:53:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-20 17:53:18,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109892578] [2024-11-20 17:53:18,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 17:53:18,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 17:53:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-20 17:53:18,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 17:53:18,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 17:53:18,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-20 17:53:18,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 306 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2024-11-20 17:53:18,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:53:18,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-20 17:53:18,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:53:19,325 INFO L124 PetriNetUnfolderBase]: 809/1592 cut-off events. [2024-11-20 17:53:19,325 INFO L125 PetriNetUnfolderBase]: For 3218/3302 co-relation queries the response was YES. [2024-11-20 17:53:19,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5498 conditions, 1592 events. 809/1592 cut-off events. For 3218/3302 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9646 event pairs, 114 based on Foata normal form. 16/1457 useless extension candidates. Maximal degree in co-relation 4315. Up to 517 conditions per place. [2024-11-20 17:53:19,336 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 122 selfloop transitions, 17 changer transitions 0/156 dead transitions. [2024-11-20 17:53:19,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 1232 flow [2024-11-20 17:53:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 17:53:19,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 17:53:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-11-20 17:53:19,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-11-20 17:53:19,338 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 306 flow. Second operand 10 states and 196 transitions. [2024-11-20 17:53:19,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 1232 flow [2024-11-20 17:53:19,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 156 transitions, 1186 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-20 17:53:19,348 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 366 flow [2024-11-20 17:53:19,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=366, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-11-20 17:53:19,349 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-11-20 17:53:19,349 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 366 flow [2024-11-20 17:53:19,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2024-11-20 17:53:19,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:53:19,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:53:19,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:19,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,551 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-20 17:53:19,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:53:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash 921125357, now seen corresponding path program 1 times [2024-11-20 17:53:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 17:53:19,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269958491] [2024-11-20 17:53:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:53:19,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 17:53:19,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 17:53:19,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-20 17:53:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:19,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 17:53:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 17:53:19,646 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-20 17:53:19,646 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 17:53:19,647 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-20 17:53:19,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-20 17:53:19,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2024-11-20 17:53:19,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 17:53:19,853 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-20 17:53:19,882 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:53:19,882 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:53:19,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:53:19 BasicIcfg [2024-11-20 17:53:19,886 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:53:19,887 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:53:19,887 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:53:19,887 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:53:19,887 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:12" (3/4) ... [2024-11-20 17:53:19,889 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 17:53:19,890 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:53:19,891 INFO L158 Benchmark]: Toolchain (without parser) took 8386.44ms. Allocated memory was 54.5MB in the beginning and 125.8MB in the end (delta: 71.3MB). Free memory was 23.8MB in the beginning and 41.9MB in the end (delta: -18.1MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,891 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 54.5MB. Free memory is still 31.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:19,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 619.18ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 23.5MB in the beginning and 30.2MB in the end (delta: -6.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.38ms. Allocated memory is still 71.3MB. Free memory was 30.2MB in the beginning and 49.4MB in the end (delta: -19.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,892 INFO L158 Benchmark]: Boogie Preprocessor took 76.27ms. Allocated memory is still 71.3MB. Free memory was 49.4MB in the beginning and 47.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,893 INFO L158 Benchmark]: RCFGBuilder took 649.78ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 41.6MB in the end (delta: 5.4MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,893 INFO L158 Benchmark]: TraceAbstraction took 6957.00ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 40.8MB in the beginning and 41.9MB in the end (delta: -1.0MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. [2024-11-20 17:53:19,896 INFO L158 Benchmark]: Witness Printer took 3.68ms. Allocated memory is still 125.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:53:19,898 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09ms. Allocated memory is still 54.5MB. Free memory is still 31.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 619.18ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 23.5MB in the beginning and 30.2MB in the end (delta: -6.7MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.38ms. Allocated memory is still 71.3MB. Free memory was 30.2MB in the beginning and 49.4MB in the end (delta: -19.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.27ms. Allocated memory is still 71.3MB. Free memory was 49.4MB in the beginning and 47.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.78ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 41.6MB in the end (delta: 5.4MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6957.00ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 40.8MB in the beginning and 41.9MB in the end (delta: -1.0MB). Peak memory consumption was 54.3MB. Max. memory is 16.1GB. * Witness Printer took 3.68ms. Allocated memory is still 125.8MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L775] 0 _N = 1 [L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L777] 0 pthread_t t1, t2; [L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=1, limit=0, t1=0] [L757] 1 int i, bound; [L758] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=0] [L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=1, limit=0, t1=0, t2=1] [L766] 2 int i, bound; [L767] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=0] [L768] 2 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=2, limit=2] [L759] 1 limit = lim VAL [\old(arg)={0:0}, _N=1, arg={0:0}, lim=1, limit=1] [L769] 2 bound = limit [L770] 2 i = 0 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=0, lim=2, limit=1] [L770] COND TRUE 2 i < bound [L770] 2 i++ VAL [\old(arg)={0:0}, _N=1, arg={0:0}, bound=1, i=1, lim=2, limit=1] [L770] COND FALSE 2 !(i < bound) [L771] CALL 2 __VERIFIER_assert(i == lim) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [_N=1, limit=1] [L752] 2 __assert_fail ("0", "generated/unwind2.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=1, limit=1] - UnprovableResult [Line: 774]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 904 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 894 mSDsluCounter, 126 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1981 IncrementalHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 25 mSDtfsCounter, 1981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=8, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 388 SizeOfPredicates, 26 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 4/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-20 17:53:19,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample