./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:02:34,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:02:34,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:02:34,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:02:34,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:02:34,364 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:02:34,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:02:34,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:02:34,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:02:34,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:02:34,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:02:34,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:02:34,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:02:34,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:02:34,368 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:02:34,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:02:34,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:02:34,369 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:02:34,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:02:34,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:02:34,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:02:34,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:02:34,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:02:34,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:02:34,374 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:02:34,375 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:02:34,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:02:34,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:02:34,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:02:34,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:02:34,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:02:34,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:02:34,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:02:34,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:02:34,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:02:34,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:02:34,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:02:34,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:02:34,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:02:34,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:02:34,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:02:34,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:02:34,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-11-12 08:02:34,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:02:34,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:02:34,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:02:34,669 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:02:34,670 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:02:34,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-12 08:02:36,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:02:36,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:02:36,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-12 08:02:36,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9725f2ee3/3cf51f9b6b1b4ec3b9ea82097cc29f15/FLAGf2d6be304 [2024-11-12 08:02:36,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9725f2ee3/3cf51f9b6b1b4ec3b9ea82097cc29f15 [2024-11-12 08:02:36,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:02:36,408 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:02:36,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:02:36,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:02:36,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:02:36,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e3c4331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36, skipping insertion in model container [2024-11-12 08:02:36,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:02:36,845 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-12 08:02:36,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:02:36,859 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:02:36,914 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-12 08:02:36,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:02:36,958 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:02:36,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36 WrapperNode [2024-11-12 08:02:36,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:02:36,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:02:36,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:02:36,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:02:36,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:36,996 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-12 08:02:36,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:02:36,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:02:36,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:02:36,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:02:37,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,014 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,032 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 08:02:37,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,045 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:02:37,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:02:37,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:02:37,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:02:37,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (1/1) ... [2024-11-12 08:02:37,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:02:37,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:37,091 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) [2024-11-12 08:02:37,093 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 [2024-11-12 08:02:37,133 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 08:02:37,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 08:02:37,133 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 08:02:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 08:02:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:02:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:02:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:02:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:02:37,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:02:37,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:02:37,138 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:02:37,251 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:02:37,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:02:37,376 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:02:37,377 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:02:37,466 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:02:37,466 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 08:02:37,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:37 BoogieIcfgContainer [2024-11-12 08:02:37,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:02:37,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:02:37,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:02:37,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:02:37,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:02:36" (1/3) ... [2024-11-12 08:02:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c719d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:02:37, skipping insertion in model container [2024-11-12 08:02:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:02:36" (2/3) ... [2024-11-12 08:02:37,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c719d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:02:37, skipping insertion in model container [2024-11-12 08:02:37,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:37" (3/3) ... [2024-11-12 08:02:37,475 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-11-12 08:02:37,490 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:02:37,490 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:02:37,490 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:02:37,560 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 08:02:37,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-11-12 08:02:37,677 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-12 08:02:37,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:02:37,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-11-12 08:02:37,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-11-12 08:02:37,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-11-12 08:02:37,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:02:37,716 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=LoopHeads, 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;@7faf905c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:02:37,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-12 08:02:37,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:02:37,731 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-12 08:02:37,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 08:02:37,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:37,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:37,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:37,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-11-12 08:02:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736689675] [2024-11-12 08:02:37,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:37,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:38,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736689675] [2024-11-12 08:02:38,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736689675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:38,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:38,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:02:38,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812263105] [2024-11-12 08:02:38,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:38,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 08:02:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 08:02:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:02:38,287 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:38,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-12 08:02:38,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:38,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:38,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:38,549 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-11-12 08:02:38,549 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:02:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-11-12 08:02:38,562 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-11-12 08:02:38,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-11-12 08:02:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 08:02:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 08:02:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-12 08:02:38,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 08:02:38,578 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-11-12 08:02:38,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-11-12 08:02:38,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:38,584 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-11-12 08:02:38,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-12 08:02:38,591 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-11-12 08:02:38,591 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-11-12 08:02:38,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-12 08:02:38,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:38,592 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:38,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:02:38,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:38,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-11-12 08:02:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:38,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469251131] [2024-11-12 08:02:38,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:38,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469251131] [2024-11-12 08:02:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469251131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:02:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588887417] [2024-11-12 08:02:38,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:38,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:02:38,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:02:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:02:38,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:38,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-12 08:02:38,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:38,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:38,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,028 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-11-12 08:02:39,028 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-11-12 08:02:39,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-11-12 08:02:39,034 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-11-12 08:02:39,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-11-12 08:02:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:02:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:02:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-12 08:02:39,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-12 08:02:39,036 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-11-12 08:02:39,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-11-12 08:02:39,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:39,041 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-11-12 08:02:39,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-11-12 08:02:39,042 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-11-12 08:02:39,045 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-11-12 08:02:39,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-12 08:02:39,045 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,045 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:02:39,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-11-12 08:02:39,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78836573] [2024-11-12 08:02:39,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:39,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78836573] [2024-11-12 08:02:39,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78836573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:39,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 08:02:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826697638] [2024-11-12 08:02:39,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:39,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 08:02:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 08:02:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 08:02:39,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:39,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-12 08:02:39,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:39,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,419 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-11-12 08:02:39,420 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-11-12 08:02:39,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-11-12 08:02:39,425 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-11-12 08:02:39,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-11-12 08:02:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 08:02:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 08:02:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-11-12 08:02:39,427 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-11-12 08:02:39,427 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-11-12 08:02:39,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-11-12 08:02:39,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-12 08:02:39,433 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-11-12 08:02:39,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-11-12 08:02:39,434 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-11-12 08:02:39,434 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-11-12 08:02:39,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-11-12 08:02:39,434 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:02:39,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-11-12 08:02:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849714053] [2024-11-12 08:02:39,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:39,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:39,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849714053] [2024-11-12 08:02:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849714053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:39,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640791850] [2024-11-12 08:02:39,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:39,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:39,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:39,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:39,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:39,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:39,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:39,810 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-11-12 08:02:39,810 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-11-12 08:02:39,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2860 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-11-12 08:02:39,816 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-11-12 08:02:39,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-11-12 08:02:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 08:02:39,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 08:02:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-12 08:02:39,819 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-12 08:02:39,819 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-11-12 08:02:39,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-11-12 08:02:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-12 08:02:39,831 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-11-12 08:02:39,831 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-12 08:02:39,832 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-11-12 08:02:39,833 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-11-12 08:02:39,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:39,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:39,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:39,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:02:39,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:39,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-11-12 08:02:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205972102] [2024-11-12 08:02:39,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:39,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205972102] [2024-11-12 08:02:39,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205972102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:39,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:39,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:39,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878280545] [2024-11-12 08:02:39,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:39,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:39,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:39,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:39,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:39,997 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:39,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:39,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:39,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:39,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:40,248 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-11-12 08:02:40,249 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-11-12 08:02:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4538 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-11-12 08:02:40,257 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-11-12 08:02:40,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-11-12 08:02:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:02:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:02:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-11-12 08:02:40,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-11-12 08:02:40,261 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-11-12 08:02:40,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-11-12 08:02:40,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-11-12 08:02:40,269 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-11-12 08:02:40,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-11-12 08:02:40,270 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-12 08:02:40,270 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-11-12 08:02:40,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:40,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:40,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:40,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 08:02:40,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:40,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-11-12 08:02:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:40,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090264936] [2024-11-12 08:02:40,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:40,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090264936] [2024-11-12 08:02:40,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090264936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:40,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:40,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 08:02:40,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270876564] [2024-11-12 08:02:40,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:40,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 08:02:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 08:02:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 08:02:40,426 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:40,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:40,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:40,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:40,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:40,685 INFO L124 PetriNetUnfolderBase]: 463/869 cut-off events. [2024-11-12 08:02:40,686 INFO L125 PetriNetUnfolderBase]: For 5168/5180 co-relation queries the response was YES. [2024-11-12 08:02:40,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 869 events. 463/869 cut-off events. For 5168/5180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4024 event pairs, 71 based on Foata normal form. 57/923 useless extension candidates. Maximal degree in co-relation 3256. Up to 226 conditions per place. [2024-11-12 08:02:40,691 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 22 changer transitions 31/100 dead transitions. [2024-11-12 08:02:40,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 931 flow [2024-11-12 08:02:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:02:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:02:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-12 08:02:40,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-12 08:02:40,693 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 10 states and 125 transitions. [2024-11-12 08:02:40,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 931 flow [2024-11-12 08:02:40,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 865 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-12 08:02:40,703 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 463 flow [2024-11-12 08:02:40,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=463, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2024-11-12 08:02:40,703 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-11-12 08:02:40,704 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 463 flow [2024-11-12 08:02:40,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2024-11-12 08:02:40,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:40,704 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:40,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 08:02:40,705 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:40,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:40,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1652274962, now seen corresponding path program 1 times [2024-11-12 08:02:40,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697504299] [2024-11-12 08:02:40,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:40,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:40,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697504299] [2024-11-12 08:02:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697504299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:40,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:02:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357010892] [2024-11-12 08:02:40,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:40,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:02:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:02:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:02:40,835 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:40,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-12 08:02:40,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:40,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:40,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:41,077 INFO L124 PetriNetUnfolderBase]: 472/878 cut-off events. [2024-11-12 08:02:41,077 INFO L125 PetriNetUnfolderBase]: For 6014/6026 co-relation queries the response was YES. [2024-11-12 08:02:41,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3457 conditions, 878 events. 472/878 cut-off events. For 6014/6026 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4087 event pairs, 59 based on Foata normal form. 30/905 useless extension candidates. Maximal degree in co-relation 3421. Up to 160 conditions per place. [2024-11-12 08:02:41,084 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 28 changer transitions 23/99 dead transitions. [2024-11-12 08:02:41,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 99 transitions, 961 flow [2024-11-12 08:02:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:02:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-12 08:02:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-12 08:02:41,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-12 08:02:41,086 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 463 flow. Second operand 10 states and 125 transitions. [2024-11-12 08:02:41,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 99 transitions, 961 flow [2024-11-12 08:02:41,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 879 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-11-12 08:02:41,098 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 543 flow [2024-11-12 08:02:41,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=543, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2024-11-12 08:02:41,099 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-12 08:02:41,100 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 543 flow [2024-11-12 08:02:41,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-12 08:02:41,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:41,100 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:41,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 08:02:41,100 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:41,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:41,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2056219221, now seen corresponding path program 1 times [2024-11-12 08:02:41,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542860495] [2024-11-12 08:02:41,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:41,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542860495] [2024-11-12 08:02:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542860495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:02:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:02:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 08:02:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189441111] [2024-11-12 08:02:41,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:02:41,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:02:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:02:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:02:41,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:41,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-12 08:02:41,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:41,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:41,556 INFO L124 PetriNetUnfolderBase]: 508/950 cut-off events. [2024-11-12 08:02:41,556 INFO L125 PetriNetUnfolderBase]: For 7560/7572 co-relation queries the response was YES. [2024-11-12 08:02:41,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3920 conditions, 950 events. 508/950 cut-off events. For 7560/7572 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4469 event pairs, 161 based on Foata normal form. 39/988 useless extension candidates. Maximal degree in co-relation 3883. Up to 540 conditions per place. [2024-11-12 08:02:41,563 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 56 selfloop transitions, 15 changer transitions 31/105 dead transitions. [2024-11-12 08:02:41,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 105 transitions, 1093 flow [2024-11-12 08:02:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 08:02:41,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 08:02:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-11-12 08:02:41,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-11-12 08:02:41,565 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 543 flow. Second operand 11 states and 135 transitions. [2024-11-12 08:02:41,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 105 transitions, 1093 flow [2024-11-12 08:02:41,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 105 transitions, 1013 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-12 08:02:41,585 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 564 flow [2024-11-12 08:02:41,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2024-11-12 08:02:41,586 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 52 predicate places. [2024-11-12 08:02:41,587 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 564 flow [2024-11-12 08:02:41,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2024-11-12 08:02:41,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:41,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:41,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 08:02:41,588 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:41,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:41,589 INFO L85 PathProgramCache]: Analyzing trace with hash -827216793, now seen corresponding path program 2 times [2024-11-12 08:02:41,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:41,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527712379] [2024-11-12 08:02:41,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:41,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527712379] [2024-11-12 08:02:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527712379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452480781] [2024-11-12 08:02:41,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:02:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:41,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:41,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:41,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:02:41,791 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:02:41,791 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:41,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:02:41,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:41,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452480781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:42,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:42,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-12 08:02:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110732137] [2024-11-12 08:02:42,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:42,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:02:42,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:42,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:02:42,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:02:42,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:42,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 564 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-12 08:02:42,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:42,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:42,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:42,774 INFO L124 PetriNetUnfolderBase]: 868/1585 cut-off events. [2024-11-12 08:02:42,775 INFO L125 PetriNetUnfolderBase]: For 18957/18969 co-relation queries the response was YES. [2024-11-12 08:02:42,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7531 conditions, 1585 events. 868/1585 cut-off events. For 18957/18969 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7618 event pairs, 70 based on Foata normal form. 84/1668 useless extension candidates. Maximal degree in co-relation 7491. Up to 297 conditions per place. [2024-11-12 08:02:42,789 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 45 changer transitions 80/217 dead transitions. [2024-11-12 08:02:42,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 217 transitions, 2340 flow [2024-11-12 08:02:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-12 08:02:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-12 08:02:42,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-11-12 08:02:42,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-11-12 08:02:42,791 INFO L175 Difference]: Start difference. First operand has 78 places, 53 transitions, 564 flow. Second operand 27 states and 334 transitions. [2024-11-12 08:02:42,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 217 transitions, 2340 flow [2024-11-12 08:02:42,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 217 transitions, 2053 flow, removed 131 selfloop flow, removed 8 redundant places. [2024-11-12 08:02:42,818 INFO L231 Difference]: Finished difference. Result has 112 places, 69 transitions, 970 flow [2024-11-12 08:02:42,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=970, PETRI_PLACES=112, PETRI_TRANSITIONS=69} [2024-11-12 08:02:42,819 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2024-11-12 08:02:42,820 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 69 transitions, 970 flow [2024-11-12 08:02:42,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-12 08:02:42,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:42,820 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:42,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:43,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:43,025 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:43,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash -884038892, now seen corresponding path program 1 times [2024-11-12 08:02:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:43,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140225593] [2024-11-12 08:02:43,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140225593] [2024-11-12 08:02:43,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140225593] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:43,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761593901] [2024-11-12 08:02:43,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:43,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:43,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:43,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:43,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 08:02:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:43,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:02:43,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:43,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761593901] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:43,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-12 08:02:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753840465] [2024-11-12 08:02:43,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:43,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:43,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:43,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:43,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 69 transitions, 970 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2024-11-12 08:02:43,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:43,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:43,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:44,198 INFO L124 PetriNetUnfolderBase]: 1138/2145 cut-off events. [2024-11-12 08:02:44,199 INFO L125 PetriNetUnfolderBase]: For 71176/71182 co-relation queries the response was YES. [2024-11-12 08:02:44,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13866 conditions, 2145 events. 1138/2145 cut-off events. For 71176/71182 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11253 event pairs, 153 based on Foata normal form. 69/2211 useless extension candidates. Maximal degree in co-relation 13810. Up to 490 conditions per place. [2024-11-12 08:02:44,223 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 54 changer transitions 67/223 dead transitions. [2024-11-12 08:02:44,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 223 transitions, 3463 flow [2024-11-12 08:02:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-12 08:02:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-12 08:02:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-11-12 08:02:44,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-11-12 08:02:44,225 INFO L175 Difference]: Start difference. First operand has 112 places, 69 transitions, 970 flow. Second operand 25 states and 309 transitions. [2024-11-12 08:02:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 223 transitions, 3463 flow [2024-11-12 08:02:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 223 transitions, 2878 flow, removed 276 selfloop flow, removed 13 redundant places. [2024-11-12 08:02:44,297 INFO L231 Difference]: Finished difference. Result has 130 places, 84 transitions, 1306 flow [2024-11-12 08:02:44,297 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1306, PETRI_PLACES=130, PETRI_TRANSITIONS=84} [2024-11-12 08:02:44,298 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 104 predicate places. [2024-11-12 08:02:44,298 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 84 transitions, 1306 flow [2024-11-12 08:02:44,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 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) [2024-11-12 08:02:44,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:44,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:44,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 08:02:44,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-12 08:02:44,500 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:44,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2089657410, now seen corresponding path program 2 times [2024-11-12 08:02:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710209069] [2024-11-12 08:02:44,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:44,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710209069] [2024-11-12 08:02:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710209069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402122179] [2024-11-12 08:02:44,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:02:44,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:44,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:44,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:44,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 08:02:44,663 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:02:44,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:44,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 08:02:44,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402122179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:44,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:44,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-12 08:02:44,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081794192] [2024-11-12 08:02:44,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:44,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-12 08:02:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:44,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-12 08:02:44,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-12 08:02:44,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:44,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 84 transitions, 1306 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-12 08:02:44,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:44,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:44,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:45,750 INFO L124 PetriNetUnfolderBase]: 1255/2398 cut-off events. [2024-11-12 08:02:45,751 INFO L125 PetriNetUnfolderBase]: For 116977/116983 co-relation queries the response was YES. [2024-11-12 08:02:45,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16837 conditions, 2398 events. 1255/2398 cut-off events. For 116977/116983 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12847 event pairs, 38 based on Foata normal form. 141/2538 useless extension candidates. Maximal degree in co-relation 16775. Up to 507 conditions per place. [2024-11-12 08:02:45,780 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 81 changer transitions 102/278 dead transitions. [2024-11-12 08:02:45,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 278 transitions, 4936 flow [2024-11-12 08:02:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 08:02:45,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-12 08:02:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-11-12 08:02:45,782 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-11-12 08:02:45,782 INFO L175 Difference]: Start difference. First operand has 130 places, 84 transitions, 1306 flow. Second operand 30 states and 369 transitions. [2024-11-12 08:02:45,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 278 transitions, 4936 flow [2024-11-12 08:02:45,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 278 transitions, 4198 flow, removed 336 selfloop flow, removed 17 redundant places. [2024-11-12 08:02:45,935 INFO L231 Difference]: Finished difference. Result has 154 places, 105 transitions, 1910 flow [2024-11-12 08:02:45,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1910, PETRI_PLACES=154, PETRI_TRANSITIONS=105} [2024-11-12 08:02:45,936 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2024-11-12 08:02:45,937 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 105 transitions, 1910 flow [2024-11-12 08:02:45,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 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) [2024-11-12 08:02:45,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:45,937 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:45,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:46,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:46,138 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:46,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash 777632930, now seen corresponding path program 3 times [2024-11-12 08:02:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114181873] [2024-11-12 08:02:46,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114181873] [2024-11-12 08:02:46,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114181873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:46,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901700095] [2024-11-12 08:02:46,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:02:46,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:46,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:46,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:46,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 08:02:46,392 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-12 08:02:46,392 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:46,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-12 08:02:46,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:46,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901700095] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:46,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:46,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-11-12 08:02:46,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274332828] [2024-11-12 08:02:46,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:46,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-12 08:02:46,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:46,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-12 08:02:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-11-12 08:02:46,729 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 105 transitions, 1910 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-11-12 08:02:46,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:46,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:46,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:48,422 INFO L124 PetriNetUnfolderBase]: 1723/3189 cut-off events. [2024-11-12 08:02:48,423 INFO L125 PetriNetUnfolderBase]: For 225317/225323 co-relation queries the response was YES. [2024-11-12 08:02:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26218 conditions, 3189 events. 1723/3189 cut-off events. For 225317/225323 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 16113 event pairs, 42 based on Foata normal form. 96/3284 useless extension candidates. Maximal degree in co-relation 26145. Up to 681 conditions per place. [2024-11-12 08:02:48,459 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 142 selfloop transitions, 115 changer transitions 135/395 dead transitions. [2024-11-12 08:02:48,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 395 transitions, 7990 flow [2024-11-12 08:02:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-12 08:02:48,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-12 08:02:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 565 transitions. [2024-11-12 08:02:48,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5117753623188406 [2024-11-12 08:02:48,461 INFO L175 Difference]: Start difference. First operand has 154 places, 105 transitions, 1910 flow. Second operand 46 states and 565 transitions. [2024-11-12 08:02:48,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 395 transitions, 7990 flow [2024-11-12 08:02:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 395 transitions, 6754 flow, removed 586 selfloop flow, removed 20 redundant places. [2024-11-12 08:02:48,639 INFO L231 Difference]: Finished difference. Result has 199 places, 139 transitions, 2994 flow [2024-11-12 08:02:48,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2994, PETRI_PLACES=199, PETRI_TRANSITIONS=139} [2024-11-12 08:02:48,640 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 173 predicate places. [2024-11-12 08:02:48,640 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 139 transitions, 2994 flow [2024-11-12 08:02:48,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 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) [2024-11-12 08:02:48,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:48,641 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:48,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 08:02:48,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:48,841 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:48,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1395156171, now seen corresponding path program 4 times [2024-11-12 08:02:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979913356] [2024-11-12 08:02:48,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:48,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:49,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979913356] [2024-11-12 08:02:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979913356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640208934] [2024-11-12 08:02:49,210 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 08:02:49,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:49,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:49,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:49,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 08:02:49,281 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 08:02:49,281 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:49,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 08:02:49,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:49,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640208934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:49,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 26 [2024-11-12 08:02:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495086142] [2024-11-12 08:02:49,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:49,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 08:02:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 08:02:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2024-11-12 08:02:49,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:49,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 139 transitions, 2994 flow. Second operand has 27 states, 27 states have (on average 7.222222222222222) internal successors, (195), 27 states have internal predecessors, (195), 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) [2024-11-12 08:02:49,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:49,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:49,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:51,370 INFO L124 PetriNetUnfolderBase]: 1975/3810 cut-off events. [2024-11-12 08:02:51,371 INFO L125 PetriNetUnfolderBase]: For 424922/424928 co-relation queries the response was YES. [2024-11-12 08:02:51,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36054 conditions, 3810 events. 1975/3810 cut-off events. For 424922/424928 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 20359 event pairs, 421 based on Foata normal form. 87/3894 useless extension candidates. Maximal degree in co-relation 35964. Up to 1483 conditions per place. [2024-11-12 08:02:51,406 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 163 selfloop transitions, 90 changer transitions 115/371 dead transitions. [2024-11-12 08:02:51,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 371 transitions, 9542 flow [2024-11-12 08:02:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-12 08:02:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-12 08:02:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 450 transitions. [2024-11-12 08:02:51,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-11-12 08:02:51,409 INFO L175 Difference]: Start difference. First operand has 199 places, 139 transitions, 2994 flow. Second operand 38 states and 450 transitions. [2024-11-12 08:02:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 371 transitions, 9542 flow [2024-11-12 08:02:51,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 371 transitions, 7190 flow, removed 1136 selfloop flow, removed 27 redundant places. [2024-11-12 08:02:51,949 INFO L231 Difference]: Finished difference. Result has 218 places, 169 transitions, 3330 flow [2024-11-12 08:02:51,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3330, PETRI_PLACES=218, PETRI_TRANSITIONS=169} [2024-11-12 08:02:51,951 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 192 predicate places. [2024-11-12 08:02:51,951 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 169 transitions, 3330 flow [2024-11-12 08:02:51,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.222222222222222) internal successors, (195), 27 states have internal predecessors, (195), 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) [2024-11-12 08:02:51,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:51,951 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:51,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 08:02:52,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 08:02:52,152 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:52,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:52,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1552863199, now seen corresponding path program 5 times [2024-11-12 08:02:52,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:52,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369211104] [2024-11-12 08:02:52,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:52,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369211104] [2024-11-12 08:02:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369211104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:52,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023779287] [2024-11-12 08:02:52,498 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 08:02:52,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:52,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:52,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 08:02:52,567 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-12 08:02:52,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:52,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 08:02:52,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:52,716 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:52,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:53,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023779287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:53,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-12 08:02:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494726107] [2024-11-12 08:02:53,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:53,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-12 08:02:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-12 08:02:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-11-12 08:02:53,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:53,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 169 transitions, 3330 flow. Second operand has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 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) [2024-11-12 08:02:53,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:53,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:53,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:54,847 INFO L124 PetriNetUnfolderBase]: 2488/4979 cut-off events. [2024-11-12 08:02:54,848 INFO L125 PetriNetUnfolderBase]: For 556956/556962 co-relation queries the response was YES. [2024-11-12 08:02:54,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44911 conditions, 4979 events. 2488/4979 cut-off events. For 556956/556962 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 28888 event pairs, 194 based on Foata normal form. 87/5065 useless extension candidates. Maximal degree in co-relation 44818. Up to 1179 conditions per place. [2024-11-12 08:02:54,905 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 156 selfloop transitions, 178 changer transitions 129/466 dead transitions. [2024-11-12 08:02:54,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 466 transitions, 10837 flow [2024-11-12 08:02:54,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-12 08:02:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-12 08:02:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 538 transitions. [2024-11-12 08:02:54,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4981481481481482 [2024-11-12 08:02:54,912 INFO L175 Difference]: Start difference. First operand has 218 places, 169 transitions, 3330 flow. Second operand 45 states and 538 transitions. [2024-11-12 08:02:54,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 466 transitions, 10837 flow [2024-11-12 08:02:55,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 466 transitions, 9684 flow, removed 545 selfloop flow, removed 20 redundant places. [2024-11-12 08:02:55,754 INFO L231 Difference]: Finished difference. Result has 253 places, 226 transitions, 4978 flow [2024-11-12 08:02:55,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2829, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4978, PETRI_PLACES=253, PETRI_TRANSITIONS=226} [2024-11-12 08:02:55,755 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2024-11-12 08:02:55,755 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 226 transitions, 4978 flow [2024-11-12 08:02:55,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.225806451612903) internal successors, (224), 31 states have internal predecessors, (224), 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) [2024-11-12 08:02:55,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:55,756 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:55,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 08:02:55,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:55,956 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:02:55,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:02:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1530051853, now seen corresponding path program 6 times [2024-11-12 08:02:55,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:02:55,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923912425] [2024-11-12 08:02:55,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:02:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:02:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:02:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:02:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923912425] [2024-11-12 08:02:56,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923912425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:02:56,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322661974] [2024-11-12 08:02:56,222 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 08:02:56,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:02:56,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:02:56,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:02:56,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 08:02:56,286 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-12 08:02:56,286 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:02:56,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-12 08:02:56,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:02:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:02:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:02:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322661974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:02:56,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:02:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 30 [2024-11-12 08:02:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008383597] [2024-11-12 08:02:56,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:02:56,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-12 08:02:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:02:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-12 08:02:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2024-11-12 08:02:56,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:02:56,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 226 transitions, 4978 flow. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 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) [2024-11-12 08:02:56,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:02:56,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:02:56,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:02:58,809 INFO L124 PetriNetUnfolderBase]: 3127/6190 cut-off events. [2024-11-12 08:02:58,810 INFO L125 PetriNetUnfolderBase]: For 918669/918675 co-relation queries the response was YES. [2024-11-12 08:02:58,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63089 conditions, 6190 events. 3127/6190 cut-off events. For 918669/918675 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 36308 event pairs, 47 based on Foata normal form. 87/6274 useless extension candidates. Maximal degree in co-relation 62984. Up to 1473 conditions per place. [2024-11-12 08:02:58,888 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 184 selfloop transitions, 231 changer transitions 121/539 dead transitions. [2024-11-12 08:02:58,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 539 transitions, 14102 flow [2024-11-12 08:02:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-12 08:02:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-12 08:02:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 602 transitions. [2024-11-12 08:02:58,891 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-12 08:02:58,891 INFO L175 Difference]: Start difference. First operand has 253 places, 226 transitions, 4978 flow. Second operand 49 states and 602 transitions. [2024-11-12 08:02:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 539 transitions, 14102 flow [2024-11-12 08:02:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 539 transitions, 12271 flow, removed 868 selfloop flow, removed 23 redundant places. [2024-11-12 08:02:59,882 INFO L231 Difference]: Finished difference. Result has 291 places, 262 transitions, 6230 flow [2024-11-12 08:02:59,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=6230, PETRI_PLACES=291, PETRI_TRANSITIONS=262} [2024-11-12 08:02:59,883 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2024-11-12 08:02:59,884 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 262 transitions, 6230 flow [2024-11-12 08:02:59,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 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) [2024-11-12 08:02:59,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:02:59,884 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:02:59,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:00,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:00,085 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:00,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:00,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2000720348, now seen corresponding path program 7 times [2024-11-12 08:03:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733595494] [2024-11-12 08:03:00,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:00,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:00,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733595494] [2024-11-12 08:03:00,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733595494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:00,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090183094] [2024-11-12 08:03:00,371 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 08:03:00,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:00,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:03:00,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 08:03:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:00,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-12 08:03:00,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:00,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090183094] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:00,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2024-11-12 08:03:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029178549] [2024-11-12 08:03:00,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:00,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 08:03:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 08:03:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2024-11-12 08:03:00,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:00,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 262 transitions, 6230 flow. Second operand has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:00,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:00,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:00,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:03,507 INFO L124 PetriNetUnfolderBase]: 3136/6231 cut-off events. [2024-11-12 08:03:03,507 INFO L125 PetriNetUnfolderBase]: For 1142305/1142311 co-relation queries the response was YES. [2024-11-12 08:03:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67131 conditions, 6231 events. 3136/6231 cut-off events. For 1142305/1142311 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 36741 event pairs, 38 based on Foata normal form. 123/6353 useless extension candidates. Maximal degree in co-relation 67012. Up to 1467 conditions per place. [2024-11-12 08:03:03,569 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 176 selfloop transitions, 248 changer transitions 139/566 dead transitions. [2024-11-12 08:03:03,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 566 transitions, 15508 flow [2024-11-12 08:03:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-12 08:03:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-12 08:03:03,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 633 transitions. [2024-11-12 08:03:03,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-11-12 08:03:03,571 INFO L175 Difference]: Start difference. First operand has 291 places, 262 transitions, 6230 flow. Second operand 52 states and 633 transitions. [2024-11-12 08:03:03,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 566 transitions, 15508 flow [2024-11-12 08:03:05,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 566 transitions, 13565 flow, removed 896 selfloop flow, removed 26 redundant places. [2024-11-12 08:03:05,131 INFO L231 Difference]: Finished difference. Result has 324 places, 275 transitions, 6768 flow [2024-11-12 08:03:05,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6768, PETRI_PLACES=324, PETRI_TRANSITIONS=275} [2024-11-12 08:03:05,131 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 298 predicate places. [2024-11-12 08:03:05,131 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 275 transitions, 6768 flow [2024-11-12 08:03:05,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.185185185185185) internal successors, (194), 27 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:05,132 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:05,132 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:05,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:05,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 08:03:05,333 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:05,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -561571072, now seen corresponding path program 8 times [2024-11-12 08:03:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010543744] [2024-11-12 08:03:05,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010543744] [2024-11-12 08:03:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010543744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:05,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124248204] [2024-11-12 08:03:05,828 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 08:03:05,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:05,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:03:05,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 08:03:05,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 08:03:05,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:05,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 08:03:05,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:06,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 08:03:06,483 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:06,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124248204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 08:03:06,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 08:03:06,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 46 [2024-11-12 08:03:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421651048] [2024-11-12 08:03:06,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 08:03:06,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-12 08:03:06,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-12 08:03:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=1682, Unknown=0, NotChecked=0, Total=2162 [2024-11-12 08:03:06,522 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-12 08:03:06,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 275 transitions, 6768 flow. Second operand has 47 states, 47 states have (on average 7.042553191489362) internal successors, (331), 47 states have internal predecessors, (331), 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) [2024-11-12 08:03:06,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:06,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-12 08:03:06,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:09,382 INFO L124 PetriNetUnfolderBase]: 3433/6787 cut-off events. [2024-11-12 08:03:09,382 INFO L125 PetriNetUnfolderBase]: For 1334216/1334222 co-relation queries the response was YES. [2024-11-12 08:03:09,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74639 conditions, 6787 events. 3433/6787 cut-off events. For 1334216/1334222 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 40196 event pairs, 102 based on Foata normal form. 42/6828 useless extension candidates. Maximal degree in co-relation 74513. Up to 1599 conditions per place. [2024-11-12 08:03:09,480 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 200 selfloop transitions, 271 changer transitions 117/591 dead transitions. [2024-11-12 08:03:09,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 591 transitions, 16118 flow [2024-11-12 08:03:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-12 08:03:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-12 08:03:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 631 transitions. [2024-11-12 08:03:09,484 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5056089743589743 [2024-11-12 08:03:09,484 INFO L175 Difference]: Start difference. First operand has 324 places, 275 transitions, 6768 flow. Second operand 52 states and 631 transitions. [2024-11-12 08:03:09,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 591 transitions, 16118 flow [2024-11-12 08:03:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 591 transitions, 14024 flow, removed 853 selfloop flow, removed 41 redundant places. [2024-11-12 08:03:11,779 INFO L231 Difference]: Finished difference. Result has 339 places, 308 transitions, 7448 flow [2024-11-12 08:03:11,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5566, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7448, PETRI_PLACES=339, PETRI_TRANSITIONS=308} [2024-11-12 08:03:11,780 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 313 predicate places. [2024-11-12 08:03:11,780 INFO L471 AbstractCegarLoop]: Abstraction has has 339 places, 308 transitions, 7448 flow [2024-11-12 08:03:11,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.042553191489362) internal successors, (331), 47 states have internal predecessors, (331), 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) [2024-11-12 08:03:11,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:11,780 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:11,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 08:03:11,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 08:03:11,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-12 08:03:11,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1559428453, now seen corresponding path program 9 times [2024-11-12 08:03:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465793399] [2024-11-12 08:03:11,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 210 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:03:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465793399] [2024-11-12 08:03:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465793399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:03:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894970972] [2024-11-12 08:03:12,180 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 08:03:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:03:12,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:12,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 08:03:12,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 08:03:12,252 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-12 08:03:12,253 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 08:03:12,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-12 08:03:12,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:03:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 08:03:12,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:03:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894970972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:03:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-11-12 08:03:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910772227] [2024-11-12 08:03:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:12,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 08:03:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 08:03:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-12 08:03:12,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-11-12 08:03:12,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 308 transitions, 7448 flow. Second operand has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 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) [2024-11-12 08:03:12,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:12,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-11-12 08:03:12,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:18,041 INFO L124 PetriNetUnfolderBase]: 11686/23281 cut-off events. [2024-11-12 08:03:18,041 INFO L125 PetriNetUnfolderBase]: For 3595048/3600258 co-relation queries the response was YES. [2024-11-12 08:03:18,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194103 conditions, 23281 events. 11686/23281 cut-off events. For 3595048/3600258 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 197486 event pairs, 665 based on Foata normal form. 296/20834 useless extension candidates. Maximal degree in co-relation 193980. Up to 4564 conditions per place. [2024-11-12 08:03:18,386 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 384/384 dead transitions. [2024-11-12 08:03:18,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 384 transitions, 7047 flow [2024-11-12 08:03:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 08:03:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-12 08:03:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 237 transitions. [2024-11-12 08:03:18,388 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2024-11-12 08:03:18,388 INFO L175 Difference]: Start difference. First operand has 339 places, 308 transitions, 7448 flow. Second operand 13 states and 237 transitions. [2024-11-12 08:03:18,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 384 transitions, 7047 flow [2024-11-12 08:03:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 384 transitions, 5902 flow, removed 346 selfloop flow, removed 46 redundant places. [2024-11-12 08:03:23,140 INFO L231 Difference]: Finished difference. Result has 298 places, 0 transitions, 0 flow [2024-11-12 08:03:23,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5480, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=298, PETRI_TRANSITIONS=0} [2024-11-12 08:03:23,141 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 272 predicate places. [2024-11-12 08:03:23,141 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 0 transitions, 0 flow [2024-11-12 08:03:23,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.846153846153847) internal successors, (167), 13 states have internal predecessors, (167), 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) [2024-11-12 08:03:23,144 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-12 08:03:23,144 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-12 08:03:23,144 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-12 08:03:23,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 08:03:23,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 08:03:23,345 INFO L421 BasicCegarLoop]: Path program histogram: [9, 3, 2, 2, 1, 1] [2024-11-12 08:03:23,349 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:03:23,350 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:03:23,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:03:23 BasicIcfg [2024-11-12 08:03:23,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:03:23,356 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:03:23,356 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:03:23,356 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:03:23,357 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:02:37" (3/4) ... [2024-11-12 08:03:23,360 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:03:23,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-11-12 08:03:23,364 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-11-12 08:03:23,368 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-11-12 08:03:23,369 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-12 08:03:23,369 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 08:03:23,369 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 08:03:23,459 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:03:23,459 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:03:23,459 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:03:23,460 INFO L158 Benchmark]: Toolchain (without parser) took 47052.57ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 89.6MB in the beginning and 8.1GB in the end (delta: -8.0GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-12 08:03:23,461 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory was 112.4MB in the beginning and 112.3MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:03:23,461 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.68ms. Allocated memory is still 146.8MB. Free memory was 89.6MB in the beginning and 67.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-12 08:03:23,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.26ms. Allocated memory is still 146.8MB. Free memory was 67.8MB in the beginning and 65.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:23,462 INFO L158 Benchmark]: Boogie Preprocessor took 51.52ms. Allocated memory is still 146.8MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:23,462 INFO L158 Benchmark]: RCFGBuilder took 417.34ms. Allocated memory is still 146.8MB. Free memory was 63.8MB in the beginning and 46.2MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-12 08:03:23,462 INFO L158 Benchmark]: TraceAbstraction took 45886.43ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 45.0MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-12 08:03:23,463 INFO L158 Benchmark]: Witness Printer took 103.52ms. Allocated memory is still 9.6GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:23,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 146.8MB. Free memory was 112.4MB in the beginning and 112.3MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.68ms. Allocated memory is still 146.8MB. Free memory was 89.6MB in the beginning and 67.8MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.26ms. Allocated memory is still 146.8MB. Free memory was 67.8MB in the beginning and 65.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.52ms. Allocated memory is still 146.8MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.34ms. Allocated memory is still 146.8MB. Free memory was 63.8MB in the beginning and 46.2MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 45886.43ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 45.0MB in the beginning and 8.1GB in the end (delta: -8.1GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Witness Printer took 103.52ms. Allocated memory is still 9.6GB. Free memory was 8.1GB in the beginning and 8.1GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.7s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 35.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5725 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5701 mSDsluCounter, 265 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 258 mSDsCounter, 335 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6618 IncrementalHoareTripleChecker+Invalid, 6953 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 335 mSolverCounterUnsat, 7 mSDtfsCounter, 6618 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1341 GetRequests, 712 SyntacticMatches, 16 SemanticMatches, 613 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9988 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7448occurred in iteration=17, InterpolantAutomatonStates: 451, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 1002 NumberOfCodeBlocks, 1002 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 1337 ConstructedInterpolants, 0 QuantifiedInterpolants, 5346 SizeOfPredicates, 106 NumberOfNonLiveVariables, 1330 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 37 InterpolantComputations, 9 PerfectInterpolantSequences, 448/2082 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:03:23,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE