./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/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.fs.cvc5-61a6796-m [2024-10-14 14:17:45,065 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:17:45,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:17:45,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:17:45,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:17:45,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:17:45,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:17:45,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:17:45,155 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:17:45,155 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:17:45,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:17:45,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:17:45,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:17:45,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:17:45,159 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:17:45,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:17:45,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:17:45,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:17:45,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:17:45,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:17:45,163 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:17:45,163 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:17:45,164 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:17:45,164 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:17:45,164 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:17:45,164 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:17:45,164 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:17:45,165 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:17:45,165 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:17:45,165 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:17:45,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:17:45,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:17:45,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:17:45,166 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:17:45,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:17:45,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:17:45,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:17:45,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-10-14 14:17:45,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:17:45,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:17:45,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:17:45,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:17:45,362 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:17:45,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-10-14 14:17:46,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:17:46,761 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:17:46,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-10-14 14:17:46,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/369980b18/39efe475a54148ab86093dfd6baeef36/FLAG8dc1ab9e1 [2024-10-14 14:17:47,148 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/369980b18/39efe475a54148ab86093dfd6baeef36 [2024-10-14 14:17:47,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:17:47,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:17:47,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:17:47,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:17:47,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:17:47,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277a5b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47, skipping insertion in model container [2024-10-14 14:17:47,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:17:47,454 WARN L248 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] [2024-10-14 14:17:47,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:17:47,467 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:17:47,510 WARN L248 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] [2024-10-14 14:17:47,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:17:47,587 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:17:47,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47 WrapperNode [2024-10-14 14:17:47,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:17:47,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:17:47,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:17:47,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:17:47,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,625 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-10-14 14:17:47,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:17:47,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:17:47,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:17:47,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:17:47,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,643 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,662 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]. [2024-10-14 14:17:47,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:17:47,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:17:47,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:17:47,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:17:47,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (1/1) ... [2024-10-14 14:17:47,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:17:47,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:47,722 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) [2024-10-14 14:17:47,724 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 [2024-10-14 14:17:47,756 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-14 14:17:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-14 14:17:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:17:47,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:17:47,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:17:47,762 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:17:47,864 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:17:47,865 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:17:47,941 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:17:47,941 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:17:47,997 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:17:47,998 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 14:17:47,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:17:47 BoogieIcfgContainer [2024-10-14 14:17:47,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:17:48,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:17:48,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:17:48,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:17:48,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:17:47" (1/3) ... [2024-10-14 14:17:48,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd9dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:17:48, skipping insertion in model container [2024-10-14 14:17:48,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:17:47" (2/3) ... [2024-10-14 14:17:48,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd9dcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:17:48, skipping insertion in model container [2024-10-14 14:17:48,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:17:47" (3/3) ... [2024-10-14 14:17:48,005 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-10-14 14:17:48,017 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:17:48,017 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 14:17:48,018 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:17:48,047 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:17:48,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-10-14 14:17:48,086 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-14 14:17:48,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:17:48,088 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. [2024-10-14 14:17:48,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-10-14 14:17:48,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-10-14 14:17:48,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:17:48,101 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;@5dfd0fb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:17:48,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-14 14:17:48,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:17:48,107 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-14 14:17:48,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:17:48,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:48,108 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:48,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:48,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-10-14 14:17:48,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:48,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371492151] [2024-10-14 14:17:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:48,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:48,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:48,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371492151] [2024-10-14 14:17:48,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371492151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:48,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:48,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:17:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837566325] [2024-10-14 14:17:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:48,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:17:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:17:48,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:17:48,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:48,509 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) [2024-10-14 14:17:48,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:48,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:48,725 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-10-14 14:17:48,729 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 14:17:48,732 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. [2024-10-14 14:17:48,739 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-10-14 14:17:48,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-10-14 14:17:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 14:17:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 14:17:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-14 14:17:48,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-14 14:17:48,758 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-10-14 14:17:48,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-10-14 14:17:48,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:17:48,763 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-10-14 14:17:48,765 INFO L260 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} [2024-10-14 14:17:48,772 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-14 14:17:48,772 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-10-14 14:17:48,773 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) [2024-10-14 14:17:48,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:48,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:48,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:17:48,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:48,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-10-14 14:17:48,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570242096] [2024-10-14 14:17:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570242096] [2024-10-14 14:17:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570242096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:48,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:48,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:17:48,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427564579] [2024-10-14 14:17:48,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:48,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:17:48,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:17:48,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:17:48,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:48,994 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) [2024-10-14 14:17:48,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:48,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:48,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:49,209 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-10-14 14:17:49,210 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-10-14 14:17:49,212 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. [2024-10-14 14:17:49,216 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-10-14 14:17:49,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-10-14 14:17:49,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:17:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:17:49,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-10-14 14:17:49,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-14 14:17:49,219 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-10-14 14:17:49,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-10-14 14:17:49,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-14 14:17:49,225 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-10-14 14:17:49,225 INFO L260 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} [2024-10-14 14:17:49,226 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-14 14:17:49,226 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-10-14 14:17:49,226 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) [2024-10-14 14:17:49,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:49,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:49,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:17:49,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:49,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-10-14 14:17:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:49,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597276227] [2024-10-14 14:17:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:49,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:49,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:49,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597276227] [2024-10-14 14:17:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597276227] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:49,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:49,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:17:49,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370944422] [2024-10-14 14:17:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:49,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:17:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:17:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:17:49,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:49,444 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) [2024-10-14 14:17:49,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:49,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:49,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:49,689 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-10-14 14:17:49,690 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-10-14 14:17:49,692 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. [2024-10-14 14:17:49,694 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-10-14 14:17:49,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-10-14 14:17:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 14:17:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 14:17:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-10-14 14:17:49,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-10-14 14:17:49,699 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-10-14 14:17:49,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-10-14 14:17:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-14 14:17:49,707 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-10-14 14:17:49,707 INFO L260 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} [2024-10-14 14:17:49,707 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-10-14 14:17:49,709 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-10-14 14:17:49,709 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) [2024-10-14 14:17:49,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:49,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:17:49,709 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:49,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-10-14 14:17:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175456584] [2024-10-14 14:17:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:49,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:49,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175456584] [2024-10-14 14:17:49,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175456584] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:49,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:49,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:17:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604844474] [2024-10-14 14:17:49,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:49,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:17:49,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:49,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:17:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:17:49,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:49,855 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) [2024-10-14 14:17:49,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:49,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:49,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:50,049 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-10-14 14:17:50,049 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-10-14 14:17:50,050 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. [2024-10-14 14:17:50,052 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-10-14 14:17:50,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-10-14 14:17:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:17:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:17:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-10-14 14:17:50,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-10-14 14:17:50,053 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-10-14 14:17:50,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-10-14 14:17:50,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-14 14:17:50,059 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-10-14 14:17:50,059 INFO L260 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} [2024-10-14 14:17:50,060 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-10-14 14:17:50,060 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-10-14 14:17:50,060 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) [2024-10-14 14:17:50,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:50,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:50,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:17:50,061 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:50,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-10-14 14:17:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:50,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133452299] [2024-10-14 14:17:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:50,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:50,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133452299] [2024-10-14 14:17:50,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133452299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:17:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647615717] [2024-10-14 14:17:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:50,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:17:50,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:17:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:17:50,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:50,147 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) [2024-10-14 14:17:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:50,318 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-10-14 14:17:50,318 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-10-14 14:17:50,319 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. [2024-10-14 14:17:50,322 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-10-14 14:17:50,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-10-14 14:17:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-14 14:17:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-14 14:17:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-10-14 14:17:50,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-14 14:17:50,324 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-10-14 14:17:50,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-10-14 14:17:50,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-14 14:17:50,330 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-10-14 14:17:50,330 INFO L260 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} [2024-10-14 14:17:50,331 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-10-14 14:17:50,331 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-10-14 14:17:50,331 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) [2024-10-14 14:17:50,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:50,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:50,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:17:50,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:50,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-10-14 14:17:50,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:50,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142273656] [2024-10-14 14:17:50,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:50,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:50,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:50,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142273656] [2024-10-14 14:17:50,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142273656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:17:50,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:17:50,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:17:50,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646667661] [2024-10-14 14:17:50,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:17:50,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 14:17:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 14:17:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 14:17:50,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:50,430 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) [2024-10-14 14:17:50,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:50,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:50,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:50,601 INFO L124 PetriNetUnfolderBase]: 463/869 cut-off events. [2024-10-14 14:17:50,602 INFO L125 PetriNetUnfolderBase]: For 5168/5180 co-relation queries the response was YES. [2024-10-14 14:17:50,603 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. [2024-10-14 14:17:50,606 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 44 selfloop transitions, 22 changer transitions 31/100 dead transitions. [2024-10-14 14:17:50,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 931 flow [2024-10-14 14:17:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:17:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:17:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-10-14 14:17:50,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-10-14 14:17:50,608 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 10 states and 125 transitions. [2024-10-14 14:17:50,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 931 flow [2024-10-14 14:17:50,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 100 transitions, 865 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-10-14 14:17:50,616 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 463 flow [2024-10-14 14:17:50,617 INFO L260 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} [2024-10-14 14:17:50,619 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2024-10-14 14:17:50,619 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 463 flow [2024-10-14 14:17:50,619 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) [2024-10-14 14:17:50,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:50,619 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:50,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:17:50,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1652274962, now seen corresponding path program 1 times [2024-10-14 14:17:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342968938] [2024-10-14 14:17:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:50,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342968938] [2024-10-14 14:17:50,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342968938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:17:50,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942763856] [2024-10-14 14:17:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:50,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:50,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:50,727 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) [2024-10-14 14:17:50,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 14:17:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:50,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 14:17:50,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:17:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:50,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:17:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942763856] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:17:50,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:17:50,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-14 14:17:50,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104524113] [2024-10-14 14:17:50,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:17:50,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:17:50,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:50,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:17:50,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-10-14 14:17:50,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:50,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2024-10-14 14:17:50,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:50,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:51,340 INFO L124 PetriNetUnfolderBase]: 661/1208 cut-off events. [2024-10-14 14:17:51,341 INFO L125 PetriNetUnfolderBase]: For 9686/9698 co-relation queries the response was YES. [2024-10-14 14:17:51,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 1208 events. 661/1208 cut-off events. For 9686/9698 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5416 event pairs, 59 based on Foata normal form. 57/1262 useless extension candidates. Maximal degree in co-relation 4912. Up to 201 conditions per place. [2024-10-14 14:17:51,347 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 66 selfloop transitions, 37 changer transitions 56/162 dead transitions. [2024-10-14 14:17:51,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 1555 flow [2024-10-14 14:17:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-14 14:17:51,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-14 14:17:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 236 transitions. [2024-10-14 14:17:51,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-10-14 14:17:51,349 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 463 flow. Second operand 19 states and 236 transitions. [2024-10-14 14:17:51,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 1555 flow [2024-10-14 14:17:51,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 162 transitions, 1431 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-10-14 14:17:51,360 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 793 flow [2024-10-14 14:17:51,360 INFO L260 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=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=793, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2024-10-14 14:17:51,360 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2024-10-14 14:17:51,360 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 793 flow [2024-10-14 14:17:51,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 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) [2024-10-14 14:17:51,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:51,361 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:51,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 14:17:51,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:51,566 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:51,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 729694198, now seen corresponding path program 1 times [2024-10-14 14:17:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525153087] [2024-10-14 14:17:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:51,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525153087] [2024-10-14 14:17:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525153087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:17:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989058877] [2024-10-14 14:17:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:51,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:51,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:51,725 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) [2024-10-14 14:17:51,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 14:17:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:51,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 14:17:51,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:17:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:51,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:17:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:52,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989058877] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:17:52,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:17:52,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-14 14:17:52,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731077291] [2024-10-14 14:17:52,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:17:52,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 14:17:52,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:52,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 14:17:52,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:17:52,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:52,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 793 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:52,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:52,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:52,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:52,619 INFO L124 PetriNetUnfolderBase]: 859/1619 cut-off events. [2024-10-14 14:17:52,619 INFO L125 PetriNetUnfolderBase]: For 20143/20155 co-relation queries the response was YES. [2024-10-14 14:17:52,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7496 conditions, 1619 events. 859/1619 cut-off events. For 20143/20155 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7244 event pairs, 215 based on Foata normal form. 93/1711 useless extension candidates. Maximal degree in co-relation 7453. Up to 756 conditions per place. [2024-10-14 14:17:52,631 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 95 selfloop transitions, 27 changer transitions 89/214 dead transitions. [2024-10-14 14:17:52,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 214 transitions, 2481 flow [2024-10-14 14:17:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 14:17:52,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-14 14:17:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 301 transitions. [2024-10-14 14:17:52,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016666666666667 [2024-10-14 14:17:52,633 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 793 flow. Second operand 25 states and 301 transitions. [2024-10-14 14:17:52,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 214 transitions, 2481 flow [2024-10-14 14:17:52,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 214 transitions, 1972 flow, removed 241 selfloop flow, removed 10 redundant places. [2024-10-14 14:17:52,656 INFO L231 Difference]: Finished difference. Result has 115 places, 78 transitions, 887 flow [2024-10-14 14:17:52,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=887, PETRI_PLACES=115, PETRI_TRANSITIONS=78} [2024-10-14 14:17:52,657 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2024-10-14 14:17:52,658 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 78 transitions, 887 flow [2024-10-14 14:17:52,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:52,658 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:52,658 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:52,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 14:17:52,862 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,SelfDestructingSolverStorable7 [2024-10-14 14:17:52,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:52,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:52,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2008695610, now seen corresponding path program 2 times [2024-10-14 14:17:52,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:52,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432073243] [2024-10-14 14:17:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:52,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:52,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432073243] [2024-10-14 14:17:52,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432073243] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:17:52,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229777024] [2024-10-14 14:17:52,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:17:52,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:53,001 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) [2024-10-14 14:17:53,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 14:17:53,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:17:53,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:17:53,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 14:17:53,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:17:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:53,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:17:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:17:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229777024] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:17:53,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:17:53,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-14 14:17:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125018138] [2024-10-14 14:17:53,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:17:53,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 14:17:53,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 14:17:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:17:53,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:53,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 78 transitions, 887 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:53,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:53,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:53,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:54,467 INFO L124 PetriNetUnfolderBase]: 1453/2753 cut-off events. [2024-10-14 14:17:54,467 INFO L125 PetriNetUnfolderBase]: For 65076/65088 co-relation queries the response was YES. [2024-10-14 14:17:54,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14625 conditions, 2753 events. 1453/2753 cut-off events. For 65076/65088 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14778 event pairs, 136 based on Foata normal form. 93/2845 useless extension candidates. Maximal degree in co-relation 14569. Up to 495 conditions per place. [2024-10-14 14:17:54,484 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 127 selfloop transitions, 82 changer transitions 91/303 dead transitions. [2024-10-14 14:17:54,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 303 transitions, 3945 flow [2024-10-14 14:17:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-14 14:17:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-14 14:17:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 393 transitions. [2024-10-14 14:17:54,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-10-14 14:17:54,489 INFO L175 Difference]: Start difference. First operand has 115 places, 78 transitions, 887 flow. Second operand 32 states and 393 transitions. [2024-10-14 14:17:54,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 303 transitions, 3945 flow [2024-10-14 14:17:54,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 303 transitions, 3348 flow, removed 289 selfloop flow, removed 13 redundant places. [2024-10-14 14:17:54,601 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 1696 flow [2024-10-14 14:17:54,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1696, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-10-14 14:17:54,602 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 121 predicate places. [2024-10-14 14:17:54,602 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 1696 flow [2024-10-14 14:17:54,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:54,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:54,602 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 14:17:54,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:54,813 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:54,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2012930652, now seen corresponding path program 3 times [2024-10-14 14:17:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:54,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105038732] [2024-10-14 14:17:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:17:54,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105038732] [2024-10-14 14:17:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105038732] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:17:54,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896256144] [2024-10-14 14:17:54,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:17:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:54,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:54,971 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) [2024-10-14 14:17:54,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 14:17:55,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-14 14:17:55,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:17:55,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 14:17:55,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:17:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:17:55,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:17:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:17:55,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896256144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:17:55,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:17:55,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-14 14:17:55,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069954117] [2024-10-14 14:17:55,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:17:55,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-14 14:17:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-14 14:17:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-10-14 14:17:55,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:55,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 1696 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:55,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:55,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:55,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:56,247 INFO L124 PetriNetUnfolderBase]: 2047/3853 cut-off events. [2024-10-14 14:17:56,248 INFO L125 PetriNetUnfolderBase]: For 159108/159114 co-relation queries the response was YES. [2024-10-14 14:17:56,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23545 conditions, 3853 events. 2047/3853 cut-off events. For 159108/159114 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22443 event pairs, 96 based on Foata normal form. 123/3975 useless extension candidates. Maximal degree in co-relation 23474. Up to 723 conditions per place. [2024-10-14 14:17:56,281 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 131 selfloop transitions, 129 changer transitions 113/376 dead transitions. [2024-10-14 14:17:56,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 376 transitions, 6015 flow [2024-10-14 14:17:56,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-14 14:17:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-10-14 14:17:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 430 transitions. [2024-10-14 14:17:56,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-10-14 14:17:56,284 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 1696 flow. Second operand 35 states and 430 transitions. [2024-10-14 14:17:56,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 376 transitions, 6015 flow [2024-10-14 14:17:56,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 376 transitions, 5154 flow, removed 414 selfloop flow, removed 15 redundant places. [2024-10-14 14:17:56,489 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 2668 flow [2024-10-14 14:17:56,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2668, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2024-10-14 14:17:56,490 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2024-10-14 14:17:56,490 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 2668 flow [2024-10-14 14:17:56,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 states have internal predecessors, (125), 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) [2024-10-14 14:17:56,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:56,490 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:56,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 14:17:56,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:56,695 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:17:56,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:17:56,696 INFO L85 PathProgramCache]: Analyzing trace with hash 330236131, now seen corresponding path program 4 times [2024-10-14 14:17:56,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:17:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019499173] [2024-10-14 14:17:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:17:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:17:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:17:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:56,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:17:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019499173] [2024-10-14 14:17:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019499173] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:17:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125554047] [2024-10-14 14:17:56,847 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:17:56,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:17:56,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:17:56,851 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) [2024-10-14 14:17:56,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 14:17:56,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:17:56,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:17:56,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 14:17:56,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:17:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:56,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:17:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:17:57,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125554047] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:17:57,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:17:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-14 14:17:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276027670] [2024-10-14 14:17:57,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:17:57,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 14:17:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:17:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 14:17:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2024-10-14 14:17:57,151 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:17:57,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 2668 flow. Second operand has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-10-14 14:17:57,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:17:57,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:17:57,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:17:59,188 INFO L124 PetriNetUnfolderBase]: 3406/6267 cut-off events. [2024-10-14 14:17:59,188 INFO L125 PetriNetUnfolderBase]: For 404474/404480 co-relation queries the response was YES. [2024-10-14 14:17:59,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46588 conditions, 6267 events. 3406/6267 cut-off events. For 404474/404480 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 36134 event pairs, 89 based on Foata normal form. 123/6387 useless extension candidates. Maximal degree in co-relation 46506. Up to 1245 conditions per place. [2024-10-14 14:17:59,232 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 170 selfloop transitions, 223 changer transitions 160/556 dead transitions. [2024-10-14 14:17:59,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 556 transitions, 11774 flow [2024-10-14 14:17:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-14 14:17:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-14 14:17:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 628 transitions. [2024-10-14 14:17:59,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5130718954248366 [2024-10-14 14:17:59,234 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 2668 flow. Second operand 51 states and 628 transitions. [2024-10-14 14:17:59,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 556 transitions, 11774 flow [2024-10-14 14:17:59,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 556 transitions, 9571 flow, removed 1071 selfloop flow, removed 19 redundant places. [2024-10-14 14:17:59,806 INFO L231 Difference]: Finished difference. Result has 233 places, 278 transitions, 5586 flow [2024-10-14 14:17:59,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5586, PETRI_PLACES=233, PETRI_TRANSITIONS=278} [2024-10-14 14:17:59,806 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-10-14 14:17:59,807 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 278 transitions, 5586 flow [2024-10-14 14:17:59,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.038461538461538) internal successors, (183), 26 states have internal predecessors, (183), 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) [2024-10-14 14:17:59,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:17:59,807 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:17:59,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 14:18:00,011 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,SelfDestructingSolverStorable10 [2024-10-14 14:18:00,012 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:00,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash -128760654, now seen corresponding path program 5 times [2024-10-14 14:18:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:00,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564785971] [2024-10-14 14:18:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:18:00,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564785971] [2024-10-14 14:18:00,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564785971] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928313568] [2024-10-14 14:18:00,475 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:18:00,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:00,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:00,478 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) [2024-10-14 14:18:00,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 14:18:00,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-14 14:18:00,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:00,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 14:18:00,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:18:00,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:18:01,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928313568] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:01,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:01,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 28 [2024-10-14 14:18:01,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604255552] [2024-10-14 14:18:01,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:01,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 14:18:01,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 14:18:01,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-10-14 14:18:01,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:01,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 278 transitions, 5586 flow. Second operand has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2024-10-14 14:18:01,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:01,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:01,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:02,996 INFO L124 PetriNetUnfolderBase]: 3496/6608 cut-off events. [2024-10-14 14:18:02,996 INFO L125 PetriNetUnfolderBase]: For 560184/560190 co-relation queries the response was YES. [2024-10-14 14:18:03,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50510 conditions, 6608 events. 3496/6608 cut-off events. For 560184/560190 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 39309 event pairs, 1349 based on Foata normal form. 87/6694 useless extension candidates. Maximal degree in co-relation 50404. Up to 4788 conditions per place. [2024-10-14 14:18:03,067 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 332 selfloop transitions, 49 changer transitions 113/497 dead transitions. [2024-10-14 14:18:03,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 497 transitions, 11502 flow [2024-10-14 14:18:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-14 14:18:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-10-14 14:18:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 433 transitions. [2024-10-14 14:18:03,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48761261261261263 [2024-10-14 14:18:03,072 INFO L175 Difference]: Start difference. First operand has 233 places, 278 transitions, 5586 flow. Second operand 37 states and 433 transitions. [2024-10-14 14:18:03,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 497 transitions, 11502 flow [2024-10-14 14:18:04,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 497 transitions, 7784 flow, removed 1834 selfloop flow, removed 19 redundant places. [2024-10-14 14:18:04,330 INFO L231 Difference]: Finished difference. Result has 256 places, 296 transitions, 4335 flow [2024-10-14 14:18:04,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4335, PETRI_PLACES=256, PETRI_TRANSITIONS=296} [2024-10-14 14:18:04,333 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-10-14 14:18:04,333 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 296 transitions, 4335 flow [2024-10-14 14:18:04,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2024-10-14 14:18:04,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:04,334 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:04,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 14:18:04,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:04,539 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:04,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -94137252, now seen corresponding path program 6 times [2024-10-14 14:18:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546938067] [2024-10-14 14:18:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546938067] [2024-10-14 14:18:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546938067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621244361] [2024-10-14 14:18:04,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-14 14:18:04,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:04,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:04,899 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) [2024-10-14 14:18:04,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-14 14:18:04,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-10-14 14:18:04,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:04,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 14:18:04,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:05,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621244361] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:05,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:05,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-10-14 14:18:05,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136298650] [2024-10-14 14:18:05,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:05,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 14:18:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 14:18:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-10-14 14:18:05,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:05,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 296 transitions, 4335 flow. Second operand has 31 states, 31 states have (on average 7.290322580645161) internal successors, (226), 31 states have internal predecessors, (226), 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) [2024-10-14 14:18:05,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:05,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:05,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:07,767 INFO L124 PetriNetUnfolderBase]: 4018/7799 cut-off events. [2024-10-14 14:18:07,767 INFO L125 PetriNetUnfolderBase]: For 501683/501689 co-relation queries the response was YES. [2024-10-14 14:18:07,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49228 conditions, 7799 events. 4018/7799 cut-off events. For 501683/501689 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 48600 event pairs, 870 based on Foata normal form. 87/7885 useless extension candidates. Maximal degree in co-relation 49115. Up to 3568 conditions per place. [2024-10-14 14:18:07,978 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 316 selfloop transitions, 170 changer transitions 127/616 dead transitions. [2024-10-14 14:18:07,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 616 transitions, 10473 flow [2024-10-14 14:18:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-14 14:18:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-14 14:18:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 519 transitions. [2024-10-14 14:18:07,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2024-10-14 14:18:07,984 INFO L175 Difference]: Start difference. First operand has 256 places, 296 transitions, 4335 flow. Second operand 44 states and 519 transitions. [2024-10-14 14:18:07,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 616 transitions, 10473 flow [2024-10-14 14:18:08,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 616 transitions, 9694 flow, removed 362 selfloop flow, removed 23 redundant places. [2024-10-14 14:18:08,703 INFO L231 Difference]: Finished difference. Result has 288 places, 353 transitions, 5572 flow [2024-10-14 14:18:08,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3908, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5572, PETRI_PLACES=288, PETRI_TRANSITIONS=353} [2024-10-14 14:18:08,705 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 262 predicate places. [2024-10-14 14:18:08,705 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 353 transitions, 5572 flow [2024-10-14 14:18:08,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.290322580645161) internal successors, (226), 31 states have internal predecessors, (226), 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) [2024-10-14 14:18:08,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:08,705 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:08,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-14 14:18:08,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:08,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:08,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:08,907 INFO L85 PathProgramCache]: Analyzing trace with hash 889180580, now seen corresponding path program 7 times [2024-10-14 14:18:08,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:08,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178842560] [2024-10-14 14:18:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:08,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178842560] [2024-10-14 14:18:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178842560] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:09,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127509342] [2024-10-14 14:18:09,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-14 14:18:09,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:09,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:09,385 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) [2024-10-14 14:18:09,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-14 14:18:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:09,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 14:18:09,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:09,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:09,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127509342] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:09,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:09,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-10-14 14:18:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240718065] [2024-10-14 14:18:09,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:09,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-14 14:18:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-14 14:18:09,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 14:18:09,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:09,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 353 transitions, 5572 flow. Second operand has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 35 states have internal predecessors, (255), 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) [2024-10-14 14:18:09,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:09,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:09,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:12,592 INFO L124 PetriNetUnfolderBase]: 4729/9221 cut-off events. [2024-10-14 14:18:12,593 INFO L125 PetriNetUnfolderBase]: For 739508/739514 co-relation queries the response was YES. [2024-10-14 14:18:12,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62676 conditions, 9221 events. 4729/9221 cut-off events. For 739508/739514 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 58510 event pairs, 186 based on Foata normal form. 87/9307 useless extension candidates. Maximal degree in co-relation 62550. Up to 1479 conditions per place. [2024-10-14 14:18:12,663 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 222 selfloop transitions, 349 changer transitions 139/713 dead transitions. [2024-10-14 14:18:12,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 713 transitions, 13366 flow [2024-10-14 14:18:12,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-14 14:18:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-10-14 14:18:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 599 transitions. [2024-10-14 14:18:12,668 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49916666666666665 [2024-10-14 14:18:12,668 INFO L175 Difference]: Start difference. First operand has 288 places, 353 transitions, 5572 flow. Second operand 50 states and 599 transitions. [2024-10-14 14:18:12,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 713 transitions, 13366 flow [2024-10-14 14:18:14,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 713 transitions, 12012 flow, removed 589 selfloop flow, removed 30 redundant places. [2024-10-14 14:18:14,360 INFO L231 Difference]: Finished difference. Result has 322 places, 423 transitions, 7427 flow [2024-10-14 14:18:14,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4898, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=7427, PETRI_PLACES=322, PETRI_TRANSITIONS=423} [2024-10-14 14:18:14,361 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 296 predicate places. [2024-10-14 14:18:14,361 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 423 transitions, 7427 flow [2024-10-14 14:18:14,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 35 states have internal predecessors, (255), 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) [2024-10-14 14:18:14,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:14,363 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:14,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-14 14:18:14,566 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,SelfDestructingSolverStorable13 [2024-10-14 14:18:14,567 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:14,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1747998468, now seen corresponding path program 8 times [2024-10-14 14:18:14,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:14,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051310691] [2024-10-14 14:18:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:14,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:14,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051310691] [2024-10-14 14:18:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051310691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105382791] [2024-10-14 14:18:14,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 14:18:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:14,956 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) [2024-10-14 14:18:14,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-14 14:18:15,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 14:18:15,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:15,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-14 14:18:15,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:15,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:15,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105382791] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:15,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:15,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 33 [2024-10-14 14:18:15,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433470056] [2024-10-14 14:18:15,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:15,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-14 14:18:15,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-14 14:18:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 14:18:15,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:15,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 423 transitions, 7427 flow. Second operand has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 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) [2024-10-14 14:18:15,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:15,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:15,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:19,527 INFO L124 PetriNetUnfolderBase]: 5980/11496 cut-off events. [2024-10-14 14:18:19,527 INFO L125 PetriNetUnfolderBase]: For 1194718/1194724 co-relation queries the response was YES. [2024-10-14 14:18:19,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86171 conditions, 11496 events. 5980/11496 cut-off events. For 1194718/1194724 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 74273 event pairs, 96 based on Foata normal form. 87/11582 useless extension candidates. Maximal degree in co-relation 86029. Up to 1833 conditions per place. [2024-10-14 14:18:19,690 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 262 selfloop transitions, 444 changer transitions 137/846 dead transitions. [2024-10-14 14:18:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 846 transitions, 16970 flow [2024-10-14 14:18:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-14 14:18:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-10-14 14:18:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 698 transitions. [2024-10-14 14:18:19,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102339181286549 [2024-10-14 14:18:19,692 INFO L175 Difference]: Start difference. First operand has 322 places, 423 transitions, 7427 flow. Second operand 57 states and 698 transitions. [2024-10-14 14:18:19,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 846 transitions, 16970 flow [2024-10-14 14:18:21,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 846 transitions, 14747 flow, removed 1059 selfloop flow, removed 22 redundant places. [2024-10-14 14:18:21,685 INFO L231 Difference]: Finished difference. Result has 372 places, 503 transitions, 9436 flow [2024-10-14 14:18:21,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6480, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=9436, PETRI_PLACES=372, PETRI_TRANSITIONS=503} [2024-10-14 14:18:21,686 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 346 predicate places. [2024-10-14 14:18:21,686 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 503 transitions, 9436 flow [2024-10-14 14:18:21,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.205882352941177) internal successors, (245), 34 states have internal predecessors, (245), 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) [2024-10-14 14:18:21,687 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:21,687 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:21,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-14 14:18:21,887 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,SelfDestructingSolverStorable14 [2024-10-14 14:18:21,888 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:21,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1955847245, now seen corresponding path program 9 times [2024-10-14 14:18:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246952577] [2024-10-14 14:18:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246952577] [2024-10-14 14:18:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246952577] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:22,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9698809] [2024-10-14 14:18:22,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 14:18:22,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:22,147 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) [2024-10-14 14:18:22,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-14 14:18:22,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 14:18:22,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:22,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 14:18:22,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 223 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:22,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 14:18:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9698809] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:22,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:22,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-10-14 14:18:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900771718] [2024-10-14 14:18:22,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:22,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-14 14:18:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:22,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-14 14:18:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-10-14 14:18:22,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:22,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 503 transitions, 9436 flow. Second operand has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 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) [2024-10-14 14:18:22,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:22,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:22,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:26,457 INFO L124 PetriNetUnfolderBase]: 6205/11989 cut-off events. [2024-10-14 14:18:26,458 INFO L125 PetriNetUnfolderBase]: For 1415557/1415563 co-relation queries the response was YES. [2024-10-14 14:18:26,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94373 conditions, 11989 events. 6205/11989 cut-off events. For 1415557/1415563 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 78166 event pairs, 258 based on Foata normal form. 60/12048 useless extension candidates. Maximal degree in co-relation 94215. Up to 1947 conditions per place. [2024-10-14 14:18:26,618 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 219 selfloop transitions, 455 changer transitions 124/801 dead transitions. [2024-10-14 14:18:26,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 801 transitions, 17058 flow [2024-10-14 14:18:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-14 14:18:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-10-14 14:18:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 618 transitions. [2024-10-14 14:18:26,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-10-14 14:18:26,620 INFO L175 Difference]: Start difference. First operand has 372 places, 503 transitions, 9436 flow. Second operand 51 states and 618 transitions. [2024-10-14 14:18:26,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 801 transitions, 17058 flow [2024-10-14 14:18:29,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 801 transitions, 14925 flow, removed 832 selfloop flow, removed 36 redundant places. [2024-10-14 14:18:29,811 INFO L231 Difference]: Finished difference. Result has 390 places, 529 transitions, 10032 flow [2024-10-14 14:18:29,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=10032, PETRI_PLACES=390, PETRI_TRANSITIONS=529} [2024-10-14 14:18:29,812 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 364 predicate places. [2024-10-14 14:18:29,812 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 529 transitions, 10032 flow [2024-10-14 14:18:29,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 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) [2024-10-14 14:18:29,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:29,812 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:29,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-14 14:18:30,016 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,SelfDestructingSolverStorable15 [2024-10-14 14:18:30,017 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:30,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1667303893, now seen corresponding path program 10 times [2024-10-14 14:18:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:30,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953297161] [2024-10-14 14:18:30,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:30,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:18:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953297161] [2024-10-14 14:18:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953297161] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625702888] [2024-10-14 14:18:30,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-14 14:18:30,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:30,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:30,436 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:18:30,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-14 14:18:30,490 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-14 14:18:30,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:30,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-14 14:18:30,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:18:30,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 14:18:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:18:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625702888] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 14:18:30,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 14:18:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 30 [2024-10-14 14:18:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140360928] [2024-10-14 14:18:30,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 14:18:30,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-14 14:18:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:30,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-14 14:18:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2024-10-14 14:18:30,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-14 14:18:30,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 529 transitions, 10032 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) [2024-10-14 14:18:30,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:30,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-14 14:18:30,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:18:34,729 INFO L124 PetriNetUnfolderBase]: 6268/12102 cut-off events. [2024-10-14 14:18:34,729 INFO L125 PetriNetUnfolderBase]: For 1552938/1552944 co-relation queries the response was YES. [2024-10-14 14:18:34,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97051 conditions, 12102 events. 6268/12102 cut-off events. For 1552938/1552944 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 78996 event pairs, 58 based on Foata normal form. 123/12224 useless extension candidates. Maximal degree in co-relation 96890. Up to 1971 conditions per place. [2024-10-14 14:18:34,908 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 248 selfloop transitions, 488 changer transitions 151/890 dead transitions. [2024-10-14 14:18:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 890 transitions, 18980 flow [2024-10-14 14:18:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-14 14:18:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-10-14 14:18:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 705 transitions. [2024-10-14 14:18:34,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064655172413793 [2024-10-14 14:18:34,910 INFO L175 Difference]: Start difference. First operand has 390 places, 529 transitions, 10032 flow. Second operand 58 states and 705 transitions. [2024-10-14 14:18:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 890 transitions, 18980 flow [2024-10-14 14:18:38,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 890 transitions, 17574 flow, removed 534 selfloop flow, removed 25 redundant places. [2024-10-14 14:18:38,511 INFO L231 Difference]: Finished difference. Result has 433 places, 542 transitions, 11075 flow [2024-10-14 14:18:38,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9020, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=11075, PETRI_PLACES=433, PETRI_TRANSITIONS=542} [2024-10-14 14:18:38,512 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 407 predicate places. [2024-10-14 14:18:38,512 INFO L471 AbstractCegarLoop]: Abstraction has has 433 places, 542 transitions, 11075 flow [2024-10-14 14:18:38,513 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) [2024-10-14 14:18:38,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:18:38,513 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:18:38,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-14 14:18:38,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-14 14:18:38,718 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-14 14:18:38,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:18:38,718 INFO L85 PathProgramCache]: Analyzing trace with hash 978588567, now seen corresponding path program 11 times [2024-10-14 14:18:38,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:18:38,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662449835] [2024-10-14 14:18:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:18:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:18:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:18:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 244 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:18:38,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:18:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662449835] [2024-10-14 14:18:38,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662449835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 14:18:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165622987] [2024-10-14 14:18:38,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-14 14:18:38,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 14:18:38,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:18:38,872 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 14:18:38,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-14 14:18:38,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-10-14 14:18:38,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 14:18:38,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 14:18:38,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 14:18:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 14:18:38,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 14:18:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165622987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:18:38,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 14:18:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-10-14 14:18:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062844527] [2024-10-14 14:18:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:18:38,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 14:18:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:18:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 14:18:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-10-14 14:18:39,000 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-10-14 14:18:39,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 542 transitions, 11075 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) [2024-10-14 14:18:39,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:18:39,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-10-14 14:18:39,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand