./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/03_incdec.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/03_incdec.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 c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:23:04,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:23:04,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:23:04,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:23:04,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:23:04,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:23:04,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:23:04,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:23:04,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:23:04,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:23:04,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:23:04,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:23:04,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:23:04,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:23:04,635 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:23:04,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:23:04,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:23:04,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:23:04,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:23:04,637 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:23:04,637 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:23:04,639 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:23:04,639 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:23:04,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:23:04,640 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:23:04,640 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:23:04,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:23:04,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:23:04,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:23:04,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:23:04,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:23:04,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:23:04,641 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:23:04,641 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:23:04,641 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:23:04,642 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:23:04,644 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:23:04,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7242322569cf2f27ee72f2a65e0d58ced23407c575f0c8898b19424239a034d [2024-11-09 10:23:04,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:23:04,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:23:04,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:23:04,863 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:23:04,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:23:04,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/03_incdec.i [2024-11-09 10:23:06,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:23:06,298 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:23:06,299 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/03_incdec.i [2024-11-09 10:23:06,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051011d4b/498880a58ce14f6392ab491cf0edac89/FLAGfb731cb84 [2024-11-09 10:23:06,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051011d4b/498880a58ce14f6392ab491cf0edac89 [2024-11-09 10:23:06,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:23:06,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:23:06,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:23:06,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:23:06,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:23:06,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:23:06" (1/1) ... [2024-11-09 10:23:06,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceaca58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:06, skipping insertion in model container [2024-11-09 10:23:06,666 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:23:06" (1/1) ... [2024-11-09 10:23:06,693 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:23:06,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:23:06,980 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:23:07,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:23:07,041 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:23:07,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07 WrapperNode [2024-11-09 10:23:07,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:23:07,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:23:07,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:23:07,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:23:07,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,079 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 101 [2024-11-09 10:23:07,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:23:07,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:23:07,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:23:07,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:23:07,101 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,103 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,113 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 10:23:07,113 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,113 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,117 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,120 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:23:07,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:23:07,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:23:07,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:23:07,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (1/1) ... [2024-11-09 10:23:07,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:23:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:23:07,158 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 10:23:07,159 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 10:23:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:23:07,194 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:23:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:23:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:23:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:23:07,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:23:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:23:07,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:23:07,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:23:07,196 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 10:23:07,291 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:23:07,292 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:23:07,433 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:23:07,433 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:23:07,526 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:23:07,527 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 10:23:07,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:23:07 BoogieIcfgContainer [2024-11-09 10:23:07,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:23:07,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:23:07,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:23:07,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:23:07,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:23:06" (1/3) ... [2024-11-09 10:23:07,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fccfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:23:07, skipping insertion in model container [2024-11-09 10:23:07,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:07" (2/3) ... [2024-11-09 10:23:07,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54fccfa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:23:07, skipping insertion in model container [2024-11-09 10:23:07,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:23:07" (3/3) ... [2024-11-09 10:23:07,535 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec.i [2024-11-09 10:23:07,547 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:23:07,547 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 10:23:07,547 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:23:07,601 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:07,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 52 transitions, 108 flow [2024-11-09 10:23:07,646 INFO L124 PetriNetUnfolderBase]: 7/56 cut-off events. [2024-11-09 10:23:07,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:07,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 56 events. 7/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-09 10:23:07,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 52 transitions, 108 flow [2024-11-09 10:23:07,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 52 transitions, 108 flow [2024-11-09 10:23:07,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:07,667 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;@4291e59a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:07,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:23:07,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:07,671 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:07,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:07,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:07,672 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:07,675 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:23:07,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:07,679 INFO L85 PathProgramCache]: Analyzing trace with hash 316906, now seen corresponding path program 1 times [2024-11-09 10:23:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:07,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103220110] [2024-11-09 10:23:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:07,807 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 10:23:07,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:07,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103220110] [2024-11-09 10:23:07,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103220110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:07,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:07,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:07,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838615571] [2024-11-09 10:23:07,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:07,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:07,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-11-09 10:23:07,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:07,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:07,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-11-09 10:23:07,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:07,923 INFO L124 PetriNetUnfolderBase]: 51/163 cut-off events. [2024-11-09 10:23:07,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:07,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 163 events. 51/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 638 event pairs, 42 based on Foata normal form. 12/172 useless extension candidates. Maximal degree in co-relation 274. Up to 120 conditions per place. [2024-11-09 10:23:07,928 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 28 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-09 10:23:07,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 146 flow [2024-11-09 10:23:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 65 transitions. [2024-11-09 10:23:07,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-09 10:23:07,957 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 108 flow. Second operand 2 states and 65 transitions. [2024-11-09 10:23:07,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 146 flow [2024-11-09 10:23:07,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:07,964 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 90 flow [2024-11-09 10:23:07,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2024-11-09 10:23:07,978 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2024-11-09 10:23:07,978 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 90 flow [2024-11-09 10:23:07,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:07,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:07,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:23:07,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:23:07,979 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:23:07,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 852408200, now seen corresponding path program 1 times [2024-11-09 10:23:07,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092787860] [2024-11-09 10:23:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:08,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:08,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:08,058 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:08,059 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 10:23:08,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:23:08,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:23:08,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-09 10:23:08,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:23:08,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:23:08,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:23:08,062 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:23:08,063 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:08,063 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:23:08,097 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:08,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 97 transitions, 204 flow [2024-11-09 10:23:08,117 INFO L124 PetriNetUnfolderBase]: 14/106 cut-off events. [2024-11-09 10:23:08,117 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:23:08,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 14/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2024-11-09 10:23:08,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 97 transitions, 204 flow [2024-11-09 10:23:08,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 97 transitions, 204 flow [2024-11-09 10:23:08,123 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:08,124 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;@4291e59a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:08,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-09 10:23:08,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:08,126 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:08,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:08,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:08,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:08,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:23:08,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash 413227, now seen corresponding path program 1 times [2024-11-09 10:23:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:08,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54035489] [2024-11-09 10:23:08,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:08,154 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 10:23:08,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54035489] [2024-11-09 10:23:08,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54035489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:08,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:08,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:08,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827415539] [2024-11-09 10:23:08,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:08,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:08,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:08,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 97 [2024-11-09 10:23:08,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 204 flow. Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:08,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:08,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 97 [2024-11-09 10:23:08,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:08,699 INFO L124 PetriNetUnfolderBase]: 2757/5385 cut-off events. [2024-11-09 10:23:08,700 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-09 10:23:08,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9734 conditions, 5385 events. 2757/5385 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 41018 event pairs, 2352 based on Foata normal form. 510/5646 useless extension candidates. Maximal degree in co-relation 4508. Up to 4278 conditions per place. [2024-11-09 10:23:08,729 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 53 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2024-11-09 10:23:08,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 280 flow [2024-11-09 10:23:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 122 transitions. [2024-11-09 10:23:08,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6288659793814433 [2024-11-09 10:23:08,731 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 204 flow. Second operand 2 states and 122 transitions. [2024-11-09 10:23:08,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 280 flow [2024-11-09 10:23:08,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:08,735 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 174 flow [2024-11-09 10:23:08,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=174, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-11-09 10:23:08,736 INFO L277 CegarLoopForPetriNet]: 88 programPoint places, -6 predicate places. [2024-11-09 10:23:08,736 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 174 flow [2024-11-09 10:23:08,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:08,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:08,736 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 10:23:08,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:23:08,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:23:08,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash -569250981, now seen corresponding path program 1 times [2024-11-09 10:23:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:08,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519985533] [2024-11-09 10:23:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:08,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:08,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:08,776 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:08,776 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-09 10:23:08,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-09 10:23:08,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-09 10:23:08,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-11-09 10:23:08,779 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-09 10:23:08,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-09 10:23:08,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-09 10:23:08,780 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-09 10:23:08,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:23:08,780 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:23:08,781 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:08,781 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:23:08,826 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:08,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 142 transitions, 302 flow [2024-11-09 10:23:08,844 INFO L124 PetriNetUnfolderBase]: 21/156 cut-off events. [2024-11-09 10:23:08,844 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:23:08,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 21/156 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 677 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2024-11-09 10:23:08,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 142 transitions, 302 flow [2024-11-09 10:23:08,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 142 transitions, 302 flow [2024-11-09 10:23:08,850 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:08,851 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;@4291e59a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:08,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-09 10:23:08,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:08,853 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:08,853 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:08,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:08,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:08,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 10:23:08,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash 554233, now seen corresponding path program 1 times [2024-11-09 10:23:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099806532] [2024-11-09 10:23:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:08,875 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 10:23:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099806532] [2024-11-09 10:23:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099806532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477209578] [2024-11-09 10:23:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:08,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:08,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 142 [2024-11-09 10:23:08,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 142 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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 10:23:08,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:08,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 142 [2024-11-09 10:23:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:17,279 INFO L124 PetriNetUnfolderBase]: 97137/154845 cut-off events. [2024-11-09 10:23:17,279 INFO L125 PetriNetUnfolderBase]: For 3076/3076 co-relation queries the response was YES. [2024-11-09 10:23:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287455 conditions, 154845 events. 97137/154845 cut-off events. For 3076/3076 co-relation queries the response was YES. Maximal size of possible extension queue 6409. Compared 1480580 event pairs, 83664 based on Foata normal form. 17154/164472 useless extension candidates. Maximal degree in co-relation 29836. Up to 130602 conditions per place. [2024-11-09 10:23:18,304 INFO L140 encePairwiseOnDemand]: 129/142 looper letters, 78 selfloop transitions, 0 changer transitions 0/121 dead transitions. [2024-11-09 10:23:18,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 416 flow [2024-11-09 10:23:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 179 transitions. [2024-11-09 10:23:18,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302816901408451 [2024-11-09 10:23:18,307 INFO L175 Difference]: Start difference. First operand has 128 places, 142 transitions, 302 flow. Second operand 2 states and 179 transitions. [2024-11-09 10:23:18,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 416 flow [2024-11-09 10:23:18,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 414 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:18,315 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 258 flow [2024-11-09 10:23:18,316 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2024-11-09 10:23:18,317 INFO L277 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2024-11-09 10:23:18,317 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 258 flow [2024-11-09 10:23:18,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 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 10:23:18,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:18,318 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 10:23:18,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:23:18,318 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-09 10:23:18,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash 648997735, now seen corresponding path program 1 times [2024-11-09 10:23:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419509440] [2024-11-09 10:23:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:18,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:18,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:18,352 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:18,352 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2024-11-09 10:23:18,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2024-11-09 10:23:18,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-11-09 10:23:18,354 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-11-09 10:23:18,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:23:18,354 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:23:18,357 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:18,357 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 10:23:18,404 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:18,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 187 transitions, 402 flow [2024-11-09 10:23:18,419 INFO L124 PetriNetUnfolderBase]: 28/206 cut-off events. [2024-11-09 10:23:18,419 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:23:18,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 206 events. 28/206 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 974 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 181. Up to 5 conditions per place. [2024-11-09 10:23:18,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 187 transitions, 402 flow [2024-11-09 10:23:18,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 187 transitions, 402 flow [2024-11-09 10:23:18,426 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:18,427 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;@4291e59a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:18,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-09 10:23:18,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:18,430 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:18,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:18,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:18,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:18,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err1ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-11-09 10:23:18,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 739924, now seen corresponding path program 1 times [2024-11-09 10:23:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806638931] [2024-11-09 10:23:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:18,449 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 10:23:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806638931] [2024-11-09 10:23:18,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806638931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:18,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:18,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780915233] [2024-11-09 10:23:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:18,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:18,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 187 [2024-11-09 10:23:18,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 187 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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 10:23:18,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:18,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 187 [2024-11-09 10:23:18,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand