./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/01b_inc.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/01b_inc.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 f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:23:02,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:23:02,657 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:23:02,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:23:02,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:23:02,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:23:02,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:23:02,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:23:02,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:23:02,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:23:02,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:23:02,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:23:02,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:23:02,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:23:02,678 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:23:02,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:23:02,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:23:02,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:23:02,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:23:02,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:23:02,679 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:23:02,679 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:23:02,680 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:23:02,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:23:02,680 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:23:02,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:23:02,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:23:02,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:23:02,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:23:02,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:23:02,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:23:02,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:23:02,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:23:02,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:23:02,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:23:02,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:23:02,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:23:02,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:23:02,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:23:02,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:23:02,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:23:02,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:23:02,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-09 10:23:02,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:23:02,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:23:02,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:23:02,994 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:23:02,995 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:23:02,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-09 10:23:04,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:23:04,605 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:23:04,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-09 10:23:04,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daca25f13/0819af3b541a422a96bb493227a47ef8/FLAGd385cf7fb [2024-11-09 10:23:04,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daca25f13/0819af3b541a422a96bb493227a47ef8 [2024-11-09 10:23:04,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:23:04,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:23:04,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:23:04,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:23:04,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:23:04,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:23:04" (1/1) ... [2024-11-09 10:23:04,642 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f1d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:04, skipping insertion in model container [2024-11-09 10:23:04,642 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:23:04" (1/1) ... [2024-11-09 10:23:04,681 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:23:04,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:23:04,989 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:23:05,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:23:05,059 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:23:05,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05 WrapperNode [2024-11-09 10:23:05,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:23:05,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:23:05,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:23:05,064 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:23:05,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,100 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-09 10:23:05,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:23:05,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:23:05,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:23:05,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:23:05,109 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,120 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 10:23:05,124 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,127 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:23:05,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:23:05,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:23:05,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:23:05,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (1/1) ... [2024-11-09 10:23:05,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:23:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:23:05,160 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 10:23:05,162 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 10:23:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 10:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 10:23:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:23:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 10:23:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:23:05,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:23:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:23:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 10:23:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:23:05,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:23:05,207 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 10:23:05,315 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:23:05,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:23:05,444 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:23:05,444 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:23:05,525 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:23:05,526 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 10:23:05,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:23:05 BoogieIcfgContainer [2024-11-09 10:23:05,526 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:23:05,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:23:05,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:23:05,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:23:05,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:23:04" (1/3) ... [2024-11-09 10:23:05,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:23:05, skipping insertion in model container [2024-11-09 10:23:05,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:23:05" (2/3) ... [2024-11-09 10:23:05,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8bd9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:23:05, skipping insertion in model container [2024-11-09 10:23:05,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:23:05" (3/3) ... [2024-11-09 10:23:05,539 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-09 10:23:05,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:23:05,556 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 10:23:05,556 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:23:05,592 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:05,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 48 flow [2024-11-09 10:23:05,645 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-09 10:23:05,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:05,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-09 10:23:05,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 22 transitions, 48 flow [2024-11-09 10:23:05,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 48 flow [2024-11-09 10:23:05,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:05,664 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;@49bec139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:05,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 10:23:05,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:05,669 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:05,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:05,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:05,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:05,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:23:05,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 175382, now seen corresponding path program 1 times [2024-11-09 10:23:05,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568894804] [2024-11-09 10:23:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:05,918 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 10:23:05,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:05,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568894804] [2024-11-09 10:23:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568894804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520125953] [2024-11-09 10:23:05,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:05,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:05,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-11-09 10:23:05,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 10:23:05,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:05,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-11-09 10:23:05,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:06,003 INFO L124 PetriNetUnfolderBase]: 19/64 cut-off events. [2024-11-09 10:23:06,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:06,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 64 events. 19/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 16 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2024-11-09 10:23:06,006 INFO L140 encePairwiseOnDemand]: 21/22 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-09 10:23:06,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 66 flow [2024-11-09 10:23:06,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2024-11-09 10:23:06,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-09 10:23:06,020 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 2 states and 29 transitions. [2024-11-09 10:23:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 66 flow [2024-11-09 10:23:06,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:06,027 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2024-11-09 10:23:06,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-09 10:23:06,036 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-11-09 10:23:06,037 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2024-11-09 10:23:06,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 10:23:06,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:06,038 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 10:23:06,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:23:06,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 10:23:06,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 929950781, now seen corresponding path program 1 times [2024-11-09 10:23:06,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:06,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537187462] [2024-11-09 10:23:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:06,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:06,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:06,122 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:06,124 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 10:23:06,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-09 10:23:06,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-09 10:23:06,125 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-09 10:23:06,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:23:06,126 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:23:06,128 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:06,129 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 10:23:06,151 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:06,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 84 flow [2024-11-09 10:23:06,164 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-09 10:23:06,164 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:23:06,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-09 10:23:06,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 84 flow [2024-11-09 10:23:06,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 84 flow [2024-11-09 10:23:06,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:06,167 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;@49bec139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:06,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 10:23:06,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:06,168 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:06,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:06,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:06,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:06,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:23:06,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:06,169 INFO L85 PathProgramCache]: Analyzing trace with hash 212123, now seen corresponding path program 1 times [2024-11-09 10:23:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659205031] [2024-11-09 10:23:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:06,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:06,197 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 10:23:06,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:06,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659205031] [2024-11-09 10:23:06,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659205031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:06,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:06,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915192956] [2024-11-09 10:23:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:06,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:06,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:06,200 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-09 10:23:06,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:06,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:06,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-09 10:23:06,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:06,327 INFO L124 PetriNetUnfolderBase]: 403/845 cut-off events. [2024-11-09 10:23:06,327 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-09 10:23:06,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 845 events. 403/845 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4939 event pairs, 376 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 267. Up to 649 conditions per place. [2024-11-09 10:23:06,336 INFO L140 encePairwiseOnDemand]: 36/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-09 10:23:06,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2024-11-09 10:23:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-09 10:23:06,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-09 10:23:06,340 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 84 flow. Second operand 2 states and 50 transitions. [2024-11-09 10:23:06,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2024-11-09 10:23:06,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:06,341 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-11-09 10:23:06,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-09 10:23:06,342 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-09 10:23:06,343 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-11-09 10:23:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:06,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:06,343 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 10:23:06,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:23:06,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 10:23:06,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1653920442, now seen corresponding path program 1 times [2024-11-09 10:23:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745651168] [2024-11-09 10:23:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:06,363 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:06,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:06,377 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:06,377 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 10:23:06,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-09 10:23:06,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-09 10:23:06,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-09 10:23:06,377 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-09 10:23:06,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:23:06,377 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 10:23:06,378 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:06,378 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 10:23:06,407 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 122 flow [2024-11-09 10:23:06,417 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-11-09 10:23:06,417 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 10:23:06,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 3/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-09 10:23:06,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 122 flow [2024-11-09 10:23:06,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 122 flow [2024-11-09 10:23:06,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:06,421 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;@49bec139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:06,422 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 10:23:06,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:06,423 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:06,423 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:06,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:06,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:06,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:23:06,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash 263759, now seen corresponding path program 1 times [2024-11-09 10:23:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009863953] [2024-11-09 10:23:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:06,449 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 10:23:06,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:06,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009863953] [2024-11-09 10:23:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009863953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:06,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:06,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:06,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306467316] [2024-11-09 10:23:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:06,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:06,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-11-09 10:23:06,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:06,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:06,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-11-09 10:23:06,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:07,297 INFO L124 PetriNetUnfolderBase]: 5803/9835 cut-off events. [2024-11-09 10:23:07,297 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-11-09 10:23:07,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 9835 events. 5803/9835 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 74404 event pairs, 5560 based on Foata normal form. 0/8904 useless extension candidates. Maximal degree in co-relation 1532. Up to 8020 conditions per place. [2024-11-09 10:23:07,398 INFO L140 encePairwiseOnDemand]: 51/52 looper letters, 30 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-09 10:23:07,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 176 flow [2024-11-09 10:23:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-09 10:23:07,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-09 10:23:07,402 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 122 flow. Second operand 2 states and 71 transitions. [2024-11-09 10:23:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 176 flow [2024-11-09 10:23:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:07,407 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 114 flow [2024-11-09 10:23:07,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-09 10:23:07,408 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-09 10:23:07,409 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 114 flow [2024-11-09 10:23:07,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:07,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:07,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:23:07,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:23:07,410 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:23:07,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:07,411 INFO L85 PathProgramCache]: Analyzing trace with hash 484077808, now seen corresponding path program 1 times [2024-11-09 10:23:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:07,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790250738] [2024-11-09 10:23:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:07,647 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 10:23:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790250738] [2024-11-09 10:23:07,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790250738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:07,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:07,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:23:07,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194984481] [2024-11-09 10:23:07,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:07,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:23:07,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:23:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:23:07,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-09 10:23:07,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:07,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:07,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-09 10:23:07,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:08,885 INFO L124 PetriNetUnfolderBase]: 11367/19191 cut-off events. [2024-11-09 10:23:08,885 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-09 10:23:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35824 conditions, 19191 events. 11367/19191 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 156012 event pairs, 3351 based on Foata normal form. 0/16604 useless extension candidates. Maximal degree in co-relation 35818. Up to 7422 conditions per place. [2024-11-09 10:23:09,074 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-11-09 10:23:09,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 536 flow [2024-11-09 10:23:09,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:23:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:23:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-09 10:23:09,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-09 10:23:09,076 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 114 flow. Second operand 6 states and 206 transitions. [2024-11-09 10:23:09,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 536 flow [2024-11-09 10:23:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:09,082 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 205 flow [2024-11-09 10:23:09,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-09 10:23:09,082 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-09 10:23:09,083 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 205 flow [2024-11-09 10:23:09,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:23:09,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:09,084 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 10:23:09,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:23:09,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 10:23:09,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -75681636, now seen corresponding path program 1 times [2024-11-09 10:23:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:09,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854856838] [2024-11-09 10:23:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:09,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 10:23:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 10:23:09,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 10:23:09,114 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 10:23:09,114 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 10:23:09,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-09 10:23:09,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-09 10:23:09,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-09 10:23:09,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-09 10:23:09,115 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-09 10:23:09,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:23:09,116 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-09 10:23:09,116 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 10:23:09,116 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 10:23:09,148 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 10:23:09,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 162 flow [2024-11-09 10:23:09,157 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-09 10:23:09,158 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 10:23:09,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 86 events. 4/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2024-11-09 10:23:09,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 162 flow [2024-11-09 10:23:09,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 162 flow [2024-11-09 10:23:09,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:23:09,161 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;@49bec139, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:23:09,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 10:23:09,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:23:09,165 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-09 10:23:09,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:23:09,165 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:09,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:23:09,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:23:09,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 330290, now seen corresponding path program 1 times [2024-11-09 10:23:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36350598] [2024-11-09 10:23:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:09,177 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 10:23:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36350598] [2024-11-09 10:23:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36350598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:23:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819438237] [2024-11-09 10:23:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:09,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 10:23:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 10:23:09,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 10:23:09,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-09 10:23:09,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 10:23:09,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:09,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-09 10:23:09,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:16,889 INFO L124 PetriNetUnfolderBase]: 71899/108249 cut-off events. [2024-11-09 10:23:16,890 INFO L125 PetriNetUnfolderBase]: For 10977/10977 co-relation queries the response was YES. [2024-11-09 10:23:17,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204107 conditions, 108249 events. 71899/108249 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 924403 event pairs, 69712 based on Foata normal form. 0/97400 useless extension candidates. Maximal degree in co-relation 18298. Up to 91855 conditions per place. [2024-11-09 10:23:17,803 INFO L140 encePairwiseOnDemand]: 66/67 looper letters, 39 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-09 10:23:17,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 234 flow [2024-11-09 10:23:17,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 10:23:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 10:23:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-09 10:23:17,807 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-11-09 10:23:17,809 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 162 flow. Second operand 2 states and 92 transitions. [2024-11-09 10:23:17,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 234 flow [2024-11-09 10:23:17,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:17,820 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2024-11-09 10:23:17,820 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-09 10:23:17,822 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-09 10:23:17,822 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2024-11-09 10:23:17,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 10:23:17,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:17,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:23:17,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:23:17,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:23:17,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:17,824 INFO L85 PathProgramCache]: Analyzing trace with hash 394325089, now seen corresponding path program 1 times [2024-11-09 10:23:17,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:17,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885166308] [2024-11-09 10:23:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:17,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:17,948 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 10:23:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885166308] [2024-11-09 10:23:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885166308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:23:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284050646] [2024-11-09 10:23:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:17,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:23:17,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:23:17,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:23:17,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-09 10:23:17,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 10:23:17,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:17,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-09 10:23:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:23:36,357 INFO L124 PetriNetUnfolderBase]: 207509/303575 cut-off events. [2024-11-09 10:23:36,357 INFO L125 PetriNetUnfolderBase]: For 5181/5181 co-relation queries the response was YES. [2024-11-09 10:23:37,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576711 conditions, 303575 events. 207509/303575 cut-off events. For 5181/5181 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2715801 event pairs, 70926 based on Foata normal form. 0/257763 useless extension candidates. Maximal degree in co-relation 576704. Up to 133343 conditions per place. [2024-11-09 10:23:38,757 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-11-09 10:23:38,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 742 flow [2024-11-09 10:23:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:23:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:23:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-09 10:23:38,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2024-11-09 10:23:38,761 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 6 states and 275 transitions. [2024-11-09 10:23:38,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 742 flow [2024-11-09 10:23:38,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 10:23:38,771 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 268 flow [2024-11-09 10:23:38,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-09 10:23:38,772 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-11-09 10:23:38,772 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 268 flow [2024-11-09 10:23:38,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 10:23:38,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:23:38,773 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:23:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:23:38,773 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 10:23:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:23:38,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2020836229, now seen corresponding path program 1 times [2024-11-09 10:23:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:23:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523652802] [2024-11-09 10:23:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:23:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:23:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:23:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:23:38,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:23:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523652802] [2024-11-09 10:23:38,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523652802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:23:38,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:23:38,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:23:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132812750] [2024-11-09 10:23:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:23:38,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:23:38,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:23:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:23:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:23:38,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-09 10:23:38,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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 10:23:38,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:23:38,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-09 10:23:38,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand