./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.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 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:25:27,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:25:27,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:25:27,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:25:27,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:25:27,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:25:27,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:25:27,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:25:27,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:25:27,465 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:25:27,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:25:27,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:25:27,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:25:27,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:25:27,467 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:25:27,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:25:27,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:25:27,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:25:27,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:25:27,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:25:27,469 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:25:27,469 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:25:27,470 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:25:27,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:25:27,470 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:25:27,470 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:25:27,471 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:25:27,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:25:27,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:25:27,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:25:27,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:25:27,472 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:25:27,472 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:25:27,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:25:27,473 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:25:27,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:25:27,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:25:27,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:25:27,474 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:25:27,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:25:27,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:25:27,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:25:27,477 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 [2024-11-09 10:25:27,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:25:27,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:25:27,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:25:27,713 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:25:27,713 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:25:27,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-11-09 10:25:29,108 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:25:29,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:25:29,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-11-09 10:25:29,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a821af19/575381ebe0c745d7be748354bd89cb06/FLAGeecad249f [2024-11-09 10:25:29,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a821af19/575381ebe0c745d7be748354bd89cb06 [2024-11-09 10:25:29,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:25:29,405 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:25:29,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:25:29,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:25:29,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:25:29,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2ee13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29, skipping insertion in model container [2024-11-09 10:25:29,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:25:29,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:25:29,862 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:25:29,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:25:29,944 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:25:29,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29 WrapperNode [2024-11-09 10:25:29,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:25:29,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:25:29,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:25:29,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:25:29,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,985 INFO L138 Inliner]: procedures = 164, calls = 17, calls flagged for inlining = 4, calls inlined = 5, statements flattened = 67 [2024-11-09 10:25:29,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:25:29,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:25:29,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:25:29,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:25:29,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:29,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,018 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-09 10:25:30,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:25:30,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:25:30,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:25:30,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:25:30,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (1/1) ... [2024-11-09 10:25:30,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:25:30,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:25:30,085 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) [2024-11-09 10:25:30,089 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 [2024-11-09 10:25:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:25:30,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:25:30,147 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:25:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:25:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:25:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:25:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:25:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:25:30,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:25:30,150 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:25:30,281 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:25:30,284 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:25:30,427 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:25:30,427 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:25:30,541 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:25:30,541 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 10:25:30,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:25:30 BoogieIcfgContainer [2024-11-09 10:25:30,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:25:30,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:25:30,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:25:30,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:25:30,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:25:29" (1/3) ... [2024-11-09 10:25:30,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68093aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:25:30, skipping insertion in model container [2024-11-09 10:25:30,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:25:29" (2/3) ... [2024-11-09 10:25:30,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68093aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:25:30, skipping insertion in model container [2024-11-09 10:25:30,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:25:30" (3/3) ... [2024-11-09 10:25:30,550 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-11-09 10:25:30,565 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:25:30,566 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 10:25:30,566 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:25:30,600 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:25:30,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-11-09 10:25:30,659 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-11-09 10:25:30,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:25:30,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 8/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2024-11-09 10:25:30,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-11-09 10:25:30,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-11-09 10:25:30,672 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:25:30,677 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;@6135ffe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:25:30,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:25:30,688 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:25:30,688 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-09 10:25:30,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:25:30,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:30,689 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-09 10:25:30,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2024-11-09 10:25:30,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash 157571686, now seen corresponding path program 1 times [2024-11-09 10:25:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:30,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648934506] [2024-11-09 10:25:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:30,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:25:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:30,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:25:30,854 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:25:30,854 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 10:25:30,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-09 10:25:30,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-09 10:25:30,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-09 10:25:30,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-09 10:25:30,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:25:30,857 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 10:25:30,862 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:25:30,863 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:25:30,879 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:25:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 108 flow [2024-11-09 10:25:30,907 INFO L124 PetriNetUnfolderBase]: 13/87 cut-off events. [2024-11-09 10:25:30,907 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:25:30,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 87 events. 13/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2024-11-09 10:25:30,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 108 flow [2024-11-09 10:25:30,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 49 transitions, 108 flow [2024-11-09 10:25:30,913 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:25:30,914 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;@6135ffe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:25:30,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:25:30,919 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:25:30,919 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-09 10:25:30,920 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:25:30,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:30,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:30,920 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-09 10:25:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 743436492, now seen corresponding path program 1 times [2024-11-09 10:25:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480016342] [2024-11-09 10:25:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:30,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480016342] [2024-11-09 10:25:30,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480016342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:30,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:30,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:25:30,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233671293] [2024-11-09 10:25:30,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:25:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:25:31,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:25:31,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-09 10:25:31,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:31,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:31,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-09 10:25:31,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:31,285 INFO L124 PetriNetUnfolderBase]: 680/1512 cut-off events. [2024-11-09 10:25:31,285 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 10:25:31,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1512 events. 680/1512 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10268 event pairs, 680 based on Foata normal form. 354/1782 useless extension candidates. Maximal degree in co-relation 1927. Up to 1154 conditions per place. [2024-11-09 10:25:31,297 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-11-09 10:25:31,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 134 flow [2024-11-09 10:25:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:25:31,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:25:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-11-09 10:25:31,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-11-09 10:25:31,307 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 108 flow. Second operand 2 states and 62 transitions. [2024-11-09 10:25:31,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 134 flow [2024-11-09 10:25:31,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:31,311 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2024-11-09 10:25:31,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-09 10:25:31,315 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-11-09 10:25:31,315 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2024-11-09 10:25:31,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:31,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:31,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:31,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:25:31,317 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-09 10:25:31,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1986174764, now seen corresponding path program 1 times [2024-11-09 10:25:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129011115] [2024-11-09 10:25:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:31,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129011115] [2024-11-09 10:25:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129011115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:31,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:31,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:25:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125071031] [2024-11-09 10:25:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:31,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:25:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:25:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:25:31,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-09 10:25:31,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:31,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:31,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-09 10:25:31,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:31,711 INFO L124 PetriNetUnfolderBase]: 1080/2300 cut-off events. [2024-11-09 10:25:31,711 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-11-09 10:25:31,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 2300 events. 1080/2300 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16251 event pairs, 687 based on Foata normal form. 206/2448 useless extension candidates. Maximal degree in co-relation 4141. Up to 1386 conditions per place. [2024-11-09 10:25:31,721 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-09 10:25:31,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 229 flow [2024-11-09 10:25:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:25:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:25:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-09 10:25:31,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-11-09 10:25:31,726 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 89 transitions. [2024-11-09 10:25:31,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 229 flow [2024-11-09 10:25:31,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:31,729 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 142 flow [2024-11-09 10:25:31,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-11-09 10:25:31,730 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-09 10:25:31,731 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 142 flow [2024-11-09 10:25:31,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:31,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:31,731 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-11-09 10:25:31,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:25:31,731 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-11-09 10:25:31,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 547898454, now seen corresponding path program 1 times [2024-11-09 10:25:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168023098] [2024-11-09 10:25:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:31,750 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:25:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:31,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:25:31,760 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:25:31,760 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 10:25:31,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:25:31,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:25:31,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-09 10:25:31,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:25:31,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:25:31,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:25:31,761 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-09 10:25:31,762 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:25:31,762 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:25:31,782 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:25:31,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 63 transitions, 144 flow [2024-11-09 10:25:31,794 INFO L124 PetriNetUnfolderBase]: 18/120 cut-off events. [2024-11-09 10:25:31,794 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:25:31,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 18/120 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 93. Up to 8 conditions per place. [2024-11-09 10:25:31,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 63 transitions, 144 flow [2024-11-09 10:25:31,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 144 flow [2024-11-09 10:25:31,797 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:25:31,800 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;@6135ffe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:25:31,800 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 10:25:31,802 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:25:31,802 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-09 10:25:31,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:25:31,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:31,803 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:31,803 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 10:25:31,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 813252684, now seen corresponding path program 1 times [2024-11-09 10:25:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786148374] [2024-11-09 10:25:31,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:31,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:31,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786148374] [2024-11-09 10:25:31,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786148374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:31,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:31,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:25:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800559603] [2024-11-09 10:25:31,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:31,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:25:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:25:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:25:31,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-11-09 10:25:31,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:31,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:31,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-11-09 10:25:31,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:32,670 INFO L124 PetriNetUnfolderBase]: 6440/11494 cut-off events. [2024-11-09 10:25:32,671 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-11-09 10:25:32,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20952 conditions, 11494 events. 6440/11494 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 91646 event pairs, 6440 based on Foata normal form. 3066/14061 useless extension candidates. Maximal degree in co-relation 4459. Up to 9290 conditions per place. [2024-11-09 10:25:32,751 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 29 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-09 10:25:32,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 176 flow [2024-11-09 10:25:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:25:32,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:25:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-11-09 10:25:32,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-11-09 10:25:32,754 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 144 flow. Second operand 2 states and 80 transitions. [2024-11-09 10:25:32,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 176 flow [2024-11-09 10:25:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:32,756 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-11-09 10:25:32,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-11-09 10:25:32,756 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-11-09 10:25:32,757 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-11-09 10:25:32,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:32,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:32,757 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:32,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:25:32,758 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 10:25:32,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 178127251, now seen corresponding path program 1 times [2024-11-09 10:25:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177620849] [2024-11-09 10:25:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:32,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:32,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177620849] [2024-11-09 10:25:32,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177620849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:32,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:25:32,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567132394] [2024-11-09 10:25:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:32,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:25:32,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:25:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:25:32,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2024-11-09 10:25:32,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:32,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:32,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2024-11-09 10:25:32,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:34,598 INFO L124 PetriNetUnfolderBase]: 13477/23774 cut-off events. [2024-11-09 10:25:34,599 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-11-09 10:25:34,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43372 conditions, 23774 events. 13477/23774 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 206991 event pairs, 8161 based on Foata normal form. 2081/25389 useless extension candidates. Maximal degree in co-relation 43366. Up to 14060 conditions per place. [2024-11-09 10:25:34,704 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 52 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-11-09 10:25:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 300 flow [2024-11-09 10:25:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:25:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:25:34,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-09 10:25:34,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2024-11-09 10:25:34,709 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 115 transitions. [2024-11-09 10:25:34,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 300 flow [2024-11-09 10:25:34,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:34,711 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 188 flow [2024-11-09 10:25:34,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-09 10:25:34,712 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 10:25:34,712 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 188 flow [2024-11-09 10:25:34,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:34,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:34,715 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:34,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:25:34,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 10:25:34,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash -618648839, now seen corresponding path program 1 times [2024-11-09 10:25:34,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036220571] [2024-11-09 10:25:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:34,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:34,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:34,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036220571] [2024-11-09 10:25:34,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036220571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:34,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:34,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:25:34,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065560972] [2024-11-09 10:25:34,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:34,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:25:34,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:25:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:25:34,762 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-11-09 10:25:34,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2024-11-09 10:25:34,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:34,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-11-09 10:25:34,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:36,054 INFO L124 PetriNetUnfolderBase]: 10881/20172 cut-off events. [2024-11-09 10:25:36,054 INFO L125 PetriNetUnfolderBase]: For 7378/7528 co-relation queries the response was YES. [2024-11-09 10:25:36,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44689 conditions, 20172 events. 10881/20172 cut-off events. For 7378/7528 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 180863 event pairs, 9371 based on Foata normal form. 127/19604 useless extension candidates. Maximal degree in co-relation 44681. Up to 14599 conditions per place. [2024-11-09 10:25:36,202 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-11-09 10:25:36,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 252 flow [2024-11-09 10:25:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:25:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:25:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-11-09 10:25:36,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-09 10:25:36,204 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 188 flow. Second operand 3 states and 90 transitions. [2024-11-09 10:25:36,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 252 flow [2024-11-09 10:25:36,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:25:36,220 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 172 flow [2024-11-09 10:25:36,220 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-09 10:25:36,220 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:25:36,221 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 172 flow [2024-11-09 10:25:36,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 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) [2024-11-09 10:25:36,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:36,221 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-11-09 10:25:36,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:25:36,222 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-09 10:25:36,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:36,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1328592853, now seen corresponding path program 1 times [2024-11-09 10:25:36,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:36,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963149421] [2024-11-09 10:25:36,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:36,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:36,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:25:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:25:36,241 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:25:36,241 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:25:36,241 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-09 10:25:36,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-09 10:25:36,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-09 10:25:36,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-09 10:25:36,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-09 10:25:36,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-09 10:25:36,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-09 10:25:36,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:25:36,243 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 10:25:36,243 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:25:36,244 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 10:25:36,262 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:25:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 182 flow [2024-11-09 10:25:36,273 INFO L124 PetriNetUnfolderBase]: 23/153 cut-off events. [2024-11-09 10:25:36,274 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:25:36,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 153 events. 23/153 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 621 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2024-11-09 10:25:36,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 77 transitions, 182 flow [2024-11-09 10:25:36,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 182 flow [2024-11-09 10:25:36,276 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:25:36,276 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;@6135ffe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:25:36,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 10:25:36,279 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:25:36,279 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-09 10:25:36,279 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:25:36,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:36,279 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:36,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-09 10:25:36,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash -533072180, now seen corresponding path program 1 times [2024-11-09 10:25:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:36,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504926865] [2024-11-09 10:25:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:36,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504926865] [2024-11-09 10:25:36,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504926865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:36,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:36,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:25:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161731417] [2024-11-09 10:25:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:36,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:25:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:25:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:25:36,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-11-09 10:25:36,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:36,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:36,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-11-09 10:25:36,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:41,552 INFO L124 PetriNetUnfolderBase]: 52880/83510 cut-off events. [2024-11-09 10:25:41,553 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-11-09 10:25:41,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154745 conditions, 83510 events. 52880/83510 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 3449. Compared 738053 event pairs, 52880 based on Foata normal form. 24138/104741 useless extension candidates. Maximal degree in co-relation 21051. Up to 69986 conditions per place. [2024-11-09 10:25:42,016 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 35 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-11-09 10:25:42,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 220 flow [2024-11-09 10:25:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:25:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:25:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-11-09 10:25:42,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-09 10:25:42,018 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 182 flow. Second operand 2 states and 98 transitions. [2024-11-09 10:25:42,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 220 flow [2024-11-09 10:25:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:42,021 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 144 flow [2024-11-09 10:25:42,021 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-11-09 10:25:42,022 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-11-09 10:25:42,022 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 144 flow [2024-11-09 10:25:42,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:42,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:42,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:42,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:25:42,023 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-09 10:25:42,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1391729504, now seen corresponding path program 1 times [2024-11-09 10:25:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:42,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614279836] [2024-11-09 10:25:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:42,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:42,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:42,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614279836] [2024-11-09 10:25:42,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614279836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:42,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:42,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:25:42,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929788788] [2024-11-09 10:25:42,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:42,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:25:42,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:25:42,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:25:42,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-11-09 10:25:42,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:42,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:42,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-11-09 10:25:42,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:25:55,854 INFO L124 PetriNetUnfolderBase]: 141969/224625 cut-off events. [2024-11-09 10:25:55,854 INFO L125 PetriNetUnfolderBase]: For 2050/2050 co-relation queries the response was YES. [2024-11-09 10:25:56,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414310 conditions, 224625 events. 141969/224625 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 8636. Compared 2193521 event pairs, 82899 based on Foata normal form. 19479/240392 useless extension candidates. Maximal degree in co-relation 414303. Up to 130411 conditions per place. [2024-11-09 10:25:57,349 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 63 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-11-09 10:25:57,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 371 flow [2024-11-09 10:25:57,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:25:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:25:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-09 10:25:57,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2024-11-09 10:25:57,351 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 144 flow. Second operand 3 states and 141 transitions. [2024-11-09 10:25:57,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 371 flow [2024-11-09 10:25:57,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:25:57,357 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 234 flow [2024-11-09 10:25:57,357 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-09 10:25:57,358 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-09 10:25:57,358 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 234 flow [2024-11-09 10:25:57,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:25:57,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:25:57,359 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:25:57,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 10:25:57,359 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-09 10:25:57,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:25:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1716981542, now seen corresponding path program 1 times [2024-11-09 10:25:57,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:25:57,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365754424] [2024-11-09 10:25:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:25:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:25:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:25:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:25:57,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:25:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365754424] [2024-11-09 10:25:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365754424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:25:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:25:57,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:25:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919235226] [2024-11-09 10:25:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:25:57,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:25:57,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:25:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:25:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:25:57,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-11-09 10:25:57,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 10:25:57,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:25:57,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-11-09 10:25:57,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:26:10,550 INFO L124 PetriNetUnfolderBase]: 117405/192139 cut-off events. [2024-11-09 10:26:10,550 INFO L125 PetriNetUnfolderBase]: For 69658/70744 co-relation queries the response was YES. [2024-11-09 10:26:11,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432668 conditions, 192139 events. 117405/192139 cut-off events. For 69658/70744 co-relation queries the response was YES. Maximal size of possible extension queue 7913. Compared 1939272 event pairs, 99665 based on Foata normal form. 783/187295 useless extension candidates. Maximal degree in co-relation 432659. Up to 142201 conditions per place. [2024-11-09 10:26:11,908 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 39 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-11-09 10:26:11,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 312 flow [2024-11-09 10:26:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:26:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:26:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-09 10:26:11,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-11-09 10:26:11,910 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 234 flow. Second operand 3 states and 111 transitions. [2024-11-09 10:26:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 312 flow [2024-11-09 10:26:12,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:26:12,157 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 214 flow [2024-11-09 10:26:12,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-11-09 10:26:12,160 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-09 10:26:12,161 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 214 flow [2024-11-09 10:26:12,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-11-09 10:26:12,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:26:12,161 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2024-11-09 10:26:12,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:26:12,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-09 10:26:12,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:26:12,165 INFO L85 PathProgramCache]: Analyzing trace with hash 321063247, now seen corresponding path program 1 times [2024-11-09 10:26:12,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:26:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351067923] [2024-11-09 10:26:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:26:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:26:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:26:12,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:26:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:26:12,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:26:12,229 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:26:12,229 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-09 10:26:12,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-09 10:26:12,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-09 10:26:12,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-09 10:26:12,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-09 10:26:12,230 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-09 10:26:12,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-09 10:26:12,231 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-09 10:26:12,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:26:12,232 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-09 10:26:12,233 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:26:12,233 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 10:26:12,267 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:26:12,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 222 flow [2024-11-09 10:26:12,290 INFO L124 PetriNetUnfolderBase]: 28/186 cut-off events. [2024-11-09 10:26:12,291 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 10:26:12,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 186 events. 28/186 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 781 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2024-11-09 10:26:12,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 222 flow [2024-11-09 10:26:12,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 91 transitions, 222 flow [2024-11-09 10:26:12,293 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:26:12,293 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;@6135ffe6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:26:12,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-09 10:26:12,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:26:12,295 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-09 10:26:12,295 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 10:26:12,295 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:26:12,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:26:12,295 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-11-09 10:26:12,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:26:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 999429196, now seen corresponding path program 1 times [2024-11-09 10:26:12,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:26:12,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550305327] [2024-11-09 10:26:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:26:12,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:26:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:26:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:26:12,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:26:12,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550305327] [2024-11-09 10:26:12,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550305327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:26:12,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:26:12,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:26:12,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741264735] [2024-11-09 10:26:12,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:26:12,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:26:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:26:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:26:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:26:12,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 91 [2024-11-09 10:26:12,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:26:12,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:26:12,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 91 [2024-11-09 10:26:12,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand