./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-longer-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:08:17,472 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:08:17,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:08:17,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:08:17,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:08:17,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:08:17,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:08:17,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:08:17,573 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:08:17,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:08:17,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:08:17,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:08:17,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:08:17,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:08:17,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:08:17,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:08:17,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:08:17,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:08:17,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:08:17,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:08:17,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:08:17,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:08:17,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:08:17,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:08:17,585 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:08:17,585 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:08:17,585 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:08:17,586 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:08:17,586 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:08:17,586 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:08:17,586 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:08:17,586 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:08:17,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:17,587 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:08:17,587 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:08:17,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:08:17,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:08:17,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:08:17,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:08:17,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:08:17,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:08:17,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:08:17,590 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2024-11-10 10:08:17,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:08:17,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:08:17,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:08:17,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:08:17,888 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:08:17,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-10 10:08:19,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:08:19,612 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:08:19,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i [2024-11-10 10:08:19,629 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a4bca25/bbc39ebb93a7444bb74f33072cdf5fcf/FLAGf330af7bc [2024-11-10 10:08:19,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a4bca25/bbc39ebb93a7444bb74f33072cdf5fcf [2024-11-10 10:08:19,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:08:19,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:08:19,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:19,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:08:19,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:08:19,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:19" (1/1) ... [2024-11-10 10:08:19,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e985529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:19, skipping insertion in model container [2024-11-10 10:08:19,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:19" (1/1) ... [2024-11-10 10:08:19,998 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:08:20,386 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-10 10:08:20,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:20,400 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:08:20,439 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longer-1.i[30961,30974] [2024-11-10 10:08:20,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:20,482 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:08:20,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20 WrapperNode [2024-11-10 10:08:20,482 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:20,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:20,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:08:20,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:08:20,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,534 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-10 10:08:20,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:20,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:08:20,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:08:20,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:08:20,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,572 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:08:20,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,580 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:08:20,592 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:08:20,592 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:08:20,592 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:08:20,593 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (1/1) ... [2024-11-10 10:08:20,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:20,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:08:20,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:08:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 10:08:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 10:08:20,777 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 10:08:20,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 10:08:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:08:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:08:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:08:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:08:20,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:08:20,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:08:20,780 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:08:20,893 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:08:20,894 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:08:21,002 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:08:21,003 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:08:21,118 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:08:21,122 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:08:21,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:21 BoogieIcfgContainer [2024-11-10 10:08:21,123 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:08:21,125 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:08:21,125 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:08:21,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:08:21,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:08:19" (1/3) ... [2024-11-10 10:08:21,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31928da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:21, skipping insertion in model container [2024-11-10 10:08:21,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:20" (2/3) ... [2024-11-10 10:08:21,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31928da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:21, skipping insertion in model container [2024-11-10 10:08:21,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:21" (3/3) ... [2024-11-10 10:08:21,133 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-11-10 10:08:21,150 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:08:21,151 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:08:21,151 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:08:21,186 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 68 flow [2024-11-10 10:08:21,245 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-10 10:08:21,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:21,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-10 10:08:21,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 68 flow [2024-11-10 10:08:21,252 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 28 transitions, 62 flow [2024-11-10 10:08:21,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:21,265 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;@74092ba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:21,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:08:21,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:21,274 INFO L124 PetriNetUnfolderBase]: 5/27 cut-off events. [2024-11-10 10:08:21,274 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:21,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:21,275 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:21,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:21,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1518046071, now seen corresponding path program 1 times [2024-11-10 10:08:21,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:21,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060666193] [2024-11-10 10:08:21,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:21,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:21,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060666193] [2024-11-10 10:08:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060666193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:08:21,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357154700] [2024-11-10 10:08:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:21,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:08:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:21,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:08:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:08:21,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:21,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:21,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:21,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:21,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:22,094 INFO L124 PetriNetUnfolderBase]: 321/609 cut-off events. [2024-11-10 10:08:22,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:22,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 609 events. 321/609 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3137 event pairs, 62 based on Foata normal form. 112/664 useless extension candidates. Maximal degree in co-relation 1111. Up to 221 conditions per place. [2024-11-10 10:08:22,106 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 4 changer transitions 22/58 dead transitions. [2024-11-10 10:08:22,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 58 transitions, 224 flow [2024-11-10 10:08:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:08:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:08:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-10 10:08:22,122 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-11-10 10:08:22,124 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 62 flow. Second operand 6 states and 118 transitions. [2024-11-10 10:08:22,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 58 transitions, 224 flow [2024-11-10 10:08:22,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:08:22,130 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 79 flow [2024-11-10 10:08:22,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-11-10 10:08:22,136 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-11-10 10:08:22,137 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 79 flow [2024-11-10 10:08:22,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:22,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:22,138 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:22,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:08:22,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:22,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -2109871830, now seen corresponding path program 1 times [2024-11-10 10:08:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940534205] [2024-11-10 10:08:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:22,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940534205] [2024-11-10 10:08:22,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940534205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:22,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:22,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:08:22,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147885536] [2024-11-10 10:08:22,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:22,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:08:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:22,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:08:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:08:22,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:22,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:22,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:22,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:22,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:22,646 INFO L124 PetriNetUnfolderBase]: 382/791 cut-off events. [2024-11-10 10:08:22,647 INFO L125 PetriNetUnfolderBase]: For 291/297 co-relation queries the response was YES. [2024-11-10 10:08:22,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 791 events. 382/791 cut-off events. For 291/297 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4305 event pairs, 65 based on Foata normal form. 33/757 useless extension candidates. Maximal degree in co-relation 1674. Up to 246 conditions per place. [2024-11-10 10:08:22,658 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 46 selfloop transitions, 9 changer transitions 20/82 dead transitions. [2024-11-10 10:08:22,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 387 flow [2024-11-10 10:08:22,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:08:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:08:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-11-10 10:08:22,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-10 10:08:22,662 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 79 flow. Second operand 9 states and 153 transitions. [2024-11-10 10:08:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 387 flow [2024-11-10 10:08:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 82 transitions, 371 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-10 10:08:22,671 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-11-10 10:08:22,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-11-10 10:08:22,674 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-11-10 10:08:22,674 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-11-10 10:08:22,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:22,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:22,675 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:22,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:08:22,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:22,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash -280399476, now seen corresponding path program 2 times [2024-11-10 10:08:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019596550] [2024-11-10 10:08:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:22,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:22,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:22,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019596550] [2024-11-10 10:08:22,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019596550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:22,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:22,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:08:22,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801134185] [2024-11-10 10:08:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:22,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:08:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:22,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:08:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:08:22,858 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:22,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:22,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:22,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:23,077 INFO L124 PetriNetUnfolderBase]: 328/701 cut-off events. [2024-11-10 10:08:23,078 INFO L125 PetriNetUnfolderBase]: For 1022/1040 co-relation queries the response was YES. [2024-11-10 10:08:23,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 701 events. 328/701 cut-off events. For 1022/1040 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3870 event pairs, 65 based on Foata normal form. 63/700 useless extension candidates. Maximal degree in co-relation 1809. Up to 234 conditions per place. [2024-11-10 10:08:23,082 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 38 selfloop transitions, 9 changer transitions 28/82 dead transitions. [2024-11-10 10:08:23,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 82 transitions, 504 flow [2024-11-10 10:08:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:08:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:08:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-11-10 10:08:23,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-10 10:08:23,084 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 8 states and 135 transitions. [2024-11-10 10:08:23,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 82 transitions, 504 flow [2024-11-10 10:08:23,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 82 transitions, 496 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-10 10:08:23,090 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 218 flow [2024-11-10 10:08:23,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2024-11-10 10:08:23,091 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-11-10 10:08:23,091 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 218 flow [2024-11-10 10:08:23,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:23,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:23,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:23,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:08:23,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:23,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -525708359, now seen corresponding path program 1 times [2024-11-10 10:08:23,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:23,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051713799] [2024-11-10 10:08:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:23,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051713799] [2024-11-10 10:08:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051713799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:23,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:08:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315681792] [2024-11-10 10:08:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:23,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:08:23,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:08:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:08:23,225 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:23,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 218 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:23,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:23,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:23,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:23,511 INFO L124 PetriNetUnfolderBase]: 337/725 cut-off events. [2024-11-10 10:08:23,511 INFO L125 PetriNetUnfolderBase]: For 1761/1791 co-relation queries the response was YES. [2024-11-10 10:08:23,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 725 events. 337/725 cut-off events. For 1761/1791 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4039 event pairs, 68 based on Foata normal form. 36/688 useless extension candidates. Maximal degree in co-relation 2024. Up to 237 conditions per place. [2024-11-10 10:08:23,517 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 46 selfloop transitions, 16 changer transitions 24/93 dead transitions. [2024-11-10 10:08:23,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 615 flow [2024-11-10 10:08:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:08:23,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:08:23,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-11-10 10:08:23,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424242424242425 [2024-11-10 10:08:23,521 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 218 flow. Second operand 11 states and 179 transitions. [2024-11-10 10:08:23,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 615 flow [2024-11-10 10:08:23,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 548 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-10 10:08:23,532 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 287 flow [2024-11-10 10:08:23,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-10 10:08:23,534 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-11-10 10:08:23,535 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 287 flow [2024-11-10 10:08:23,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:23,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:23,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:08:23,536 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2107619097, now seen corresponding path program 2 times [2024-11-10 10:08:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586736326] [2024-11-10 10:08:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:23,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586736326] [2024-11-10 10:08:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586736326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:08:23,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047633001] [2024-11-10 10:08:23,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:23,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:08:23,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:08:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:08:23,664 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:23,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 287 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:23,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:23,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:23,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:23,929 INFO L124 PetriNetUnfolderBase]: 508/1103 cut-off events. [2024-11-10 10:08:23,929 INFO L125 PetriNetUnfolderBase]: For 3307/3352 co-relation queries the response was YES. [2024-11-10 10:08:23,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1103 events. 508/1103 cut-off events. For 3307/3352 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6535 event pairs, 53 based on Foata normal form. 53/1056 useless extension candidates. Maximal degree in co-relation 3220. Up to 253 conditions per place. [2024-11-10 10:08:23,937 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 57 selfloop transitions, 20 changer transitions 23/107 dead transitions. [2024-11-10 10:08:23,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 779 flow [2024-11-10 10:08:23,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:08:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:08:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-11-10 10:08:23,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-11-10 10:08:23,939 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 287 flow. Second operand 11 states and 185 transitions. [2024-11-10 10:08:23,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 779 flow [2024-11-10 10:08:23,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 107 transitions, 713 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-11-10 10:08:23,951 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 384 flow [2024-11-10 10:08:23,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2024-11-10 10:08:23,952 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-11-10 10:08:23,952 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 384 flow [2024-11-10 10:08:23,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:23,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:23,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:23,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:08:23,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:23,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:23,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1506852439, now seen corresponding path program 3 times [2024-11-10 10:08:23,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:23,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136954602] [2024-11-10 10:08:23,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:23,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:24,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:24,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136954602] [2024-11-10 10:08:24,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136954602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:24,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:24,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:08:24,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925488688] [2024-11-10 10:08:24,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:24,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:08:24,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:08:24,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-10 10:08:24,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:24,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:24,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:24,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:24,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:24,328 INFO L124 PetriNetUnfolderBase]: 445/977 cut-off events. [2024-11-10 10:08:24,328 INFO L125 PetriNetUnfolderBase]: For 5216/5273 co-relation queries the response was YES. [2024-11-10 10:08:24,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3303 conditions, 977 events. 445/977 cut-off events. For 5216/5273 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5722 event pairs, 71 based on Foata normal form. 83/966 useless extension candidates. Maximal degree in co-relation 3271. Up to 223 conditions per place. [2024-11-10 10:08:24,336 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 20 changer transitions 31/102 dead transitions. [2024-11-10 10:08:24,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 904 flow [2024-11-10 10:08:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:08:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:08:24,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-11-10 10:08:24,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-10 10:08:24,339 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 384 flow. Second operand 10 states and 165 transitions. [2024-11-10 10:08:24,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 904 flow [2024-11-10 10:08:24,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 835 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-10 10:08:24,350 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 432 flow [2024-11-10 10:08:24,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=432, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2024-11-10 10:08:24,353 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-11-10 10:08:24,353 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 432 flow [2024-11-10 10:08:24,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:24,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:24,353 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:24,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:08:24,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:24,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1803020963, now seen corresponding path program 1 times [2024-11-10 10:08:24,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100655947] [2024-11-10 10:08:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:24,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:24,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100655947] [2024-11-10 10:08:24,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100655947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:24,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047062949] [2024-11-10 10:08:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:24,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:24,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:24,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:24,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:08:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:24,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 10:08:24,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:24,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047062949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:24,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:24,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-10 10:08:24,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257084953] [2024-11-10 10:08:24,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:24,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:08:24,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:24,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:08:24,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:08:24,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:24,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 432 flow. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:24,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:24,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:24,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:25,366 INFO L124 PetriNetUnfolderBase]: 643/1382 cut-off events. [2024-11-10 10:08:25,366 INFO L125 PetriNetUnfolderBase]: For 9714/9813 co-relation queries the response was YES. [2024-11-10 10:08:25,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5013 conditions, 1382 events. 643/1382 cut-off events. For 9714/9813 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7920 event pairs, 59 based on Foata normal form. 83/1344 useless extension candidates. Maximal degree in co-relation 4978. Up to 198 conditions per place. [2024-11-10 10:08:25,377 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 66 selfloop transitions, 35 changer transitions 56/164 dead transitions. [2024-11-10 10:08:25,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 1520 flow [2024-11-10 10:08:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-10 10:08:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-10 10:08:25,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 312 transitions. [2024-11-10 10:08:25,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-11-10 10:08:25,380 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 432 flow. Second operand 19 states and 312 transitions. [2024-11-10 10:08:25,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 1520 flow [2024-11-10 10:08:25,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 164 transitions, 1396 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-11-10 10:08:25,395 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 755 flow [2024-11-10 10:08:25,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=755, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2024-11-10 10:08:25,396 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-11-10 10:08:25,396 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 755 flow [2024-11-10 10:08:25,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:25,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:25,397 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:25,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:08:25,597 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 [2024-11-10 10:08:25,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:25,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash -800918987, now seen corresponding path program 1 times [2024-11-10 10:08:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:25,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527583538] [2024-11-10 10:08:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:25,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:25,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:25,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527583538] [2024-11-10 10:08:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527583538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434521122] [2024-11-10 10:08:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:25,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:25,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:25,850 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:25,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:08:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:25,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:08:25,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:26,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:26,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434521122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:26,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:26,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-10 10:08:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441350249] [2024-11-10 10:08:26,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:26,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:08:26,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:08:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:08:26,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:26,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 755 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:26,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:26,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:27,026 INFO L124 PetriNetUnfolderBase]: 841/1916 cut-off events. [2024-11-10 10:08:27,027 INFO L125 PetriNetUnfolderBase]: For 20724/20883 co-relation queries the response was YES. [2024-11-10 10:08:27,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 1916 events. 841/1916 cut-off events. For 20724/20883 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 11131 event pairs, 215 based on Foata normal form. 121/1821 useless extension candidates. Maximal degree in co-relation 7636. Up to 756 conditions per place. [2024-11-10 10:08:27,041 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 95 selfloop transitions, 25 changer transitions 89/216 dead transitions. [2024-11-10 10:08:27,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 216 transitions, 2439 flow [2024-11-10 10:08:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:08:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:08:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 401 transitions. [2024-11-10 10:08:27,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346666666666666 [2024-11-10 10:08:27,044 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 755 flow. Second operand 25 states and 401 transitions. [2024-11-10 10:08:27,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 216 transitions, 2439 flow [2024-11-10 10:08:27,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 216 transitions, 1930 flow, removed 241 selfloop flow, removed 10 redundant places. [2024-11-10 10:08:27,068 INFO L231 Difference]: Finished difference. Result has 120 places, 80 transitions, 844 flow [2024-11-10 10:08:27,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=844, PETRI_PLACES=120, PETRI_TRANSITIONS=80} [2024-11-10 10:08:27,069 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-11-10 10:08:27,069 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 80 transitions, 844 flow [2024-11-10 10:08:27,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:27,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:27,070 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:27,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:08:27,270 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 [2024-11-10 10:08:27,271 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1020058591, now seen corresponding path program 2 times [2024-11-10 10:08:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628994770] [2024-11-10 10:08:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:27,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:27,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628994770] [2024-11-10 10:08:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628994770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786525376] [2024-11-10 10:08:27,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:08:27,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:27,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:27,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:08:27,493 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:08:27,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:27,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:08:27,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:27,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:27,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786525376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:27,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:27,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-10 10:08:27,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248168608] [2024-11-10 10:08:27,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:27,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:08:27,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:27,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:08:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:08:27,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:27,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 80 transitions, 844 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:27,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:27,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:27,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:28,914 INFO L124 PetriNetUnfolderBase]: 1435/3260 cut-off events. [2024-11-10 10:08:28,914 INFO L125 PetriNetUnfolderBase]: For 67224/67707 co-relation queries the response was YES. [2024-11-10 10:08:28,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 3260 events. 1435/3260 cut-off events. For 67224/67707 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 22687 event pairs, 136 based on Foata normal form. 147/3107 useless extension candidates. Maximal degree in co-relation 14977. Up to 492 conditions per place. [2024-11-10 10:08:28,947 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 127 selfloop transitions, 80 changer transitions 91/305 dead transitions. [2024-11-10 10:08:28,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 305 transitions, 3898 flow [2024-11-10 10:08:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 10:08:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-10 10:08:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 521 transitions. [2024-11-10 10:08:28,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5427083333333333 [2024-11-10 10:08:28,952 INFO L175 Difference]: Start difference. First operand has 120 places, 80 transitions, 844 flow. Second operand 32 states and 521 transitions. [2024-11-10 10:08:28,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 305 transitions, 3898 flow [2024-11-10 10:08:29,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 305 transitions, 3304 flow, removed 289 selfloop flow, removed 13 redundant places. [2024-11-10 10:08:29,026 INFO L231 Difference]: Finished difference. Result has 152 places, 123 transitions, 1651 flow [2024-11-10 10:08:29,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1651, PETRI_PLACES=152, PETRI_TRANSITIONS=123} [2024-11-10 10:08:29,027 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-11-10 10:08:29,029 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 123 transitions, 1651 flow [2024-11-10 10:08:29,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:29,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:29,029 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:29,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:08:29,229 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 [2024-11-10 10:08:29,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:29,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:29,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1699853055, now seen corresponding path program 3 times [2024-11-10 10:08:29,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:29,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721872553] [2024-11-10 10:08:29,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:29,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:29,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721872553] [2024-11-10 10:08:29,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721872553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:29,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030657990] [2024-11-10 10:08:29,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:08:29,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:29,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:29,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:29,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:08:29,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-10 10:08:29,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:29,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 10:08:29,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:29,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030657990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:29,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-10 10:08:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397449100] [2024-11-10 10:08:29,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:29,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 10:08:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 10:08:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-10 10:08:29,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:29,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 123 transitions, 1651 flow. Second operand has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 18 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:29,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:29,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:29,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:31,280 INFO L124 PetriNetUnfolderBase]: 1822/4124 cut-off events. [2024-11-10 10:08:31,281 INFO L125 PetriNetUnfolderBase]: For 150879/151215 co-relation queries the response was YES. [2024-11-10 10:08:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22264 conditions, 4124 events. 1822/4124 cut-off events. For 150879/151215 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 29883 event pairs, 58 based on Foata normal form. 183/3952 useless extension candidates. Maximal degree in co-relation 22194. Up to 648 conditions per place. [2024-11-10 10:08:31,323 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 124 selfloop transitions, 121 changer transitions 115/367 dead transitions. [2024-11-10 10:08:31,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 367 transitions, 5874 flow [2024-11-10 10:08:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-10 10:08:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-11-10 10:08:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 587 transitions. [2024-11-10 10:08:31,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435185185185185 [2024-11-10 10:08:31,326 INFO L175 Difference]: Start difference. First operand has 152 places, 123 transitions, 1651 flow. Second operand 36 states and 587 transitions. [2024-11-10 10:08:31,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 367 transitions, 5874 flow [2024-11-10 10:08:31,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 367 transitions, 5012 flow, removed 415 selfloop flow, removed 17 redundant places. [2024-11-10 10:08:31,549 INFO L231 Difference]: Finished difference. Result has 184 places, 158 transitions, 2495 flow [2024-11-10 10:08:31,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2495, PETRI_PLACES=184, PETRI_TRANSITIONS=158} [2024-11-10 10:08:31,552 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-11-10 10:08:31,552 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 158 transitions, 2495 flow [2024-11-10 10:08:31,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.277777777777779) internal successors, (203), 18 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:31,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:31,553 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:31,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:08:31,754 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 [2024-11-10 10:08:31,754 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:31,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:31,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1479071243, now seen corresponding path program 4 times [2024-11-10 10:08:31,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:31,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628627591] [2024-11-10 10:08:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:31,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:31,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:31,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628627591] [2024-11-10 10:08:31,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628627591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:31,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444661741] [2024-11-10 10:08:31,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:08:32,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:32,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:32,005 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:32,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:08:32,076 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:08:32,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:32,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-10 10:08:32,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:32,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444661741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:32,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-10 10:08:32,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347041388] [2024-11-10 10:08:32,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:32,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 10:08:32,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:32,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 10:08:32,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-10 10:08:32,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:32,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 158 transitions, 2495 flow. Second operand has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:32,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:32,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:34,804 INFO L124 PetriNetUnfolderBase]: 2632/5900 cut-off events. [2024-11-10 10:08:34,805 INFO L125 PetriNetUnfolderBase]: For 332714/333157 co-relation queries the response was YES. [2024-11-10 10:08:34,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37885 conditions, 5900 events. 2632/5900 cut-off events. For 332714/333157 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41587 event pairs, 89 based on Foata normal form. 179/5558 useless extension candidates. Maximal degree in co-relation 37802. Up to 966 conditions per place. [2024-11-10 10:08:34,870 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 164 selfloop transitions, 176 changer transitions 146/493 dead transitions. [2024-11-10 10:08:34,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 493 transitions, 9930 flow [2024-11-10 10:08:34,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-10 10:08:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-10 10:08:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 798 transitions. [2024-11-10 10:08:34,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-10 10:08:34,874 INFO L175 Difference]: Start difference. First operand has 184 places, 158 transitions, 2495 flow. Second operand 49 states and 798 transitions. [2024-11-10 10:08:34,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 493 transitions, 9930 flow [2024-11-10 10:08:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 493 transitions, 8302 flow, removed 784 selfloop flow, removed 20 redundant places. [2024-11-10 10:08:35,255 INFO L231 Difference]: Finished difference. Result has 234 places, 219 transitions, 4057 flow [2024-11-10 10:08:35,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=4057, PETRI_PLACES=234, PETRI_TRANSITIONS=219} [2024-11-10 10:08:35,256 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-11-10 10:08:35,256 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 219 transitions, 4057 flow [2024-11-10 10:08:35,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.08) internal successors, (277), 25 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:35,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:35,257 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:35,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:08:35,457 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 [2024-11-10 10:08:35,458 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:35,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1431876087, now seen corresponding path program 5 times [2024-11-10 10:08:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:35,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745933474] [2024-11-10 10:08:35,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:35,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745933474] [2024-11-10 10:08:36,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745933474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:36,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924799527] [2024-11-10 10:08:36,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:08:36,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:36,007 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:36,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:08:36,087 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-10 10:08:36,087 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:36,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 10:08:36,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:36,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:36,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924799527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:36,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:36,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 28 [2024-11-10 10:08:36,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73817022] [2024-11-10 10:08:36,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:36,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 10:08:36,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 10:08:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-11-10 10:08:36,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:36,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 219 transitions, 4057 flow. Second operand has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:36,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:36,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:36,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:38,637 INFO L124 PetriNetUnfolderBase]: 2758/6623 cut-off events. [2024-11-10 10:08:38,637 INFO L125 PetriNetUnfolderBase]: For 563174/563809 co-relation queries the response was YES. [2024-11-10 10:08:38,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46087 conditions, 6623 events. 2758/6623 cut-off events. For 563174/563809 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 48123 event pairs, 1013 based on Foata normal form. 114/5907 useless extension candidates. Maximal degree in co-relation 45982. Up to 3618 conditions per place. [2024-11-10 10:08:38,706 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 267 selfloop transitions, 47 changer transitions 113/434 dead transitions. [2024-11-10 10:08:38,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 434 transitions, 10319 flow [2024-11-10 10:08:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-10 10:08:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-10 10:08:38,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 581 transitions. [2024-11-10 10:08:38,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234234234234234 [2024-11-10 10:08:38,709 INFO L175 Difference]: Start difference. First operand has 234 places, 219 transitions, 4057 flow. Second operand 37 states and 581 transitions. [2024-11-10 10:08:38,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 434 transitions, 10319 flow [2024-11-10 10:08:39,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 434 transitions, 7682 flow, removed 1297 selfloop flow, removed 17 redundant places. [2024-11-10 10:08:39,301 INFO L231 Difference]: Finished difference. Result has 261 places, 237 transitions, 3773 flow [2024-11-10 10:08:39,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3773, PETRI_PLACES=261, PETRI_TRANSITIONS=237} [2024-11-10 10:08:39,302 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-11-10 10:08:39,302 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 237 transitions, 3773 flow [2024-11-10 10:08:39,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:39,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:39,303 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:39,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:08:39,503 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 [2024-11-10 10:08:39,504 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:39,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:39,505 INFO L85 PathProgramCache]: Analyzing trace with hash -976249045, now seen corresponding path program 6 times [2024-11-10 10:08:39,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:39,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898154192] [2024-11-10 10:08:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:39,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898154192] [2024-11-10 10:08:40,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898154192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:40,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827120389] [2024-11-10 10:08:40,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:08:40,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:40,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:40,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:40,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:08:40,095 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-10 10:08:40,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:40,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 10:08:40,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:40,294 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:40,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:40,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827120389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:40,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:40,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-11-10 10:08:40,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246409910] [2024-11-10 10:08:40,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:40,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 10:08:40,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 10:08:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-11-10 10:08:40,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 237 transitions, 3773 flow. Second operand has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 31 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:40,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:43,107 INFO L124 PetriNetUnfolderBase]: 3280/8057 cut-off events. [2024-11-10 10:08:43,107 INFO L125 PetriNetUnfolderBase]: For 606379/607519 co-relation queries the response was YES. [2024-11-10 10:08:43,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52240 conditions, 8057 events. 3280/8057 cut-off events. For 606379/607519 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 62325 event pairs, 600 based on Foata normal form. 147/7316 useless extension candidates. Maximal degree in co-relation 52126. Up to 2398 conditions per place. [2024-11-10 10:08:43,182 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 232 selfloop transitions, 168 changer transitions 127/534 dead transitions. [2024-11-10 10:08:43,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 534 transitions, 10568 flow [2024-11-10 10:08:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-10 10:08:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-10 10:08:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 695 transitions. [2024-11-10 10:08:43,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5265151515151515 [2024-11-10 10:08:43,186 INFO L175 Difference]: Start difference. First operand has 261 places, 237 transitions, 3773 flow. Second operand 44 states and 695 transitions. [2024-11-10 10:08:43,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 534 transitions, 10568 flow [2024-11-10 10:08:44,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 534 transitions, 9639 flow, removed 439 selfloop flow, removed 23 redundant places. [2024-11-10 10:08:44,639 INFO L231 Difference]: Finished difference. Result has 293 places, 294 transitions, 5091 flow [2024-11-10 10:08:44,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5091, PETRI_PLACES=293, PETRI_TRANSITIONS=294} [2024-11-10 10:08:44,640 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-11-10 10:08:44,640 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 294 transitions, 5091 flow [2024-11-10 10:08:44,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 31 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:44,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:44,641 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:44,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:08:44,841 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 [2024-11-10 10:08:44,842 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:44,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1931068211, now seen corresponding path program 7 times [2024-11-10 10:08:44,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:44,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931701526] [2024-11-10 10:08:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:44,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:08:45,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931701526] [2024-11-10 10:08:45,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931701526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520058150] [2024-11-10 10:08:45,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:08:45,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:45,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:45,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:45,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:08:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:45,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 10:08:45,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:08:45,568 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:08:45,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520058150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:45,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:45,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-11-10 10:08:45,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422368785] [2024-11-10 10:08:45,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:45,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-10 10:08:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-10 10:08:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-11-10 10:08:45,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:45,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 294 transitions, 5091 flow. Second operand has 35 states, 35 states have (on average 11.371428571428572) internal successors, (398), 35 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:45,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:45,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:45,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:48,933 INFO L124 PetriNetUnfolderBase]: 3757/9230 cut-off events. [2024-11-10 10:08:48,933 INFO L125 PetriNetUnfolderBase]: For 889001/890300 co-relation queries the response was YES. [2024-11-10 10:08:48,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66174 conditions, 9230 events. 3757/9230 cut-off events. For 889001/890300 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 72977 event pairs, 186 based on Foata normal form. 159/8500 useless extension candidates. Maximal degree in co-relation 66047. Up to 1698 conditions per place. [2024-11-10 10:08:49,013 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 195 selfloop transitions, 281 changer transitions 139/622 dead transitions. [2024-11-10 10:08:49,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 622 transitions, 13633 flow [2024-11-10 10:08:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-10 10:08:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-10 10:08:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 799 transitions. [2024-11-10 10:08:49,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5326666666666666 [2024-11-10 10:08:49,016 INFO L175 Difference]: Start difference. First operand has 293 places, 294 transitions, 5091 flow. Second operand 50 states and 799 transitions. [2024-11-10 10:08:49,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 622 transitions, 13633 flow [2024-11-10 10:08:50,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 622 transitions, 12081 flow, removed 690 selfloop flow, removed 30 redundant places. [2024-11-10 10:08:50,732 INFO L231 Difference]: Finished difference. Result has 324 places, 345 transitions, 6540 flow [2024-11-10 10:08:50,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4339, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=6540, PETRI_PLACES=324, PETRI_TRANSITIONS=345} [2024-11-10 10:08:50,733 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-11-10 10:08:50,733 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 345 transitions, 6540 flow [2024-11-10 10:08:50,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.371428571428572) internal successors, (398), 35 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:50,735 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:50,735 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:50,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:08:50,935 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 [2024-11-10 10:08:50,936 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:50,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 713469035, now seen corresponding path program 8 times [2024-11-10 10:08:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776822218] [2024-11-10 10:08:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:50,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:51,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776822218] [2024-11-10 10:08:51,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776822218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:51,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685007108] [2024-11-10 10:08:51,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:08:51,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:51,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:51,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:08:51,395 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:08:51,395 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:51,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-10 10:08:51,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:51,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:08:51,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685007108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:51,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 33 [2024-11-10 10:08:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909866620] [2024-11-10 10:08:51,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:51,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 10:08:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 10:08:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2024-11-10 10:08:51,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:51,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 345 transitions, 6540 flow. Second operand has 34 states, 34 states have (on average 11.235294117647058) internal successors, (382), 34 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:51,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:51,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:55,977 INFO L124 PetriNetUnfolderBase]: 5008/11927 cut-off events. [2024-11-10 10:08:55,978 INFO L125 PetriNetUnfolderBase]: For 1483479/1484811 co-relation queries the response was YES. [2024-11-10 10:08:56,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94945 conditions, 11927 events. 5008/11927 cut-off events. For 1483479/1484811 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 97168 event pairs, 96 based on Foata normal form. 177/11011 useless extension candidates. Maximal degree in co-relation 94805. Up to 2232 conditions per place. [2024-11-10 10:08:56,101 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 231 selfloop transitions, 374 changer transitions 137/749 dead transitions. [2024-11-10 10:08:56,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 749 transitions, 17399 flow [2024-11-10 10:08:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-10 10:08:56,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-10 10:08:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 926 transitions. [2024-11-10 10:08:56,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5415204678362573 [2024-11-10 10:08:56,104 INFO L175 Difference]: Start difference. First operand has 324 places, 345 transitions, 6540 flow. Second operand 57 states and 926 transitions. [2024-11-10 10:08:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 749 transitions, 17399 flow [2024-11-10 10:08:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 749 transitions, 14749 flow, removed 1176 selfloop flow, removed 33 redundant places. [2024-11-10 10:08:58,225 INFO L231 Difference]: Finished difference. Result has 363 places, 423 transitions, 8417 flow [2024-11-10 10:08:58,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5358, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=8417, PETRI_PLACES=363, PETRI_TRANSITIONS=423} [2024-11-10 10:08:58,226 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-11-10 10:08:58,226 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 423 transitions, 8417 flow [2024-11-10 10:08:58,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.235294117647058) internal successors, (382), 34 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:58,226 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:58,226 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:58,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:08:58,427 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 [2024-11-10 10:08:58,427 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:08:58,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:58,428 INFO L85 PathProgramCache]: Analyzing trace with hash -540206217, now seen corresponding path program 9 times [2024-11-10 10:08:58,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:58,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433489461] [2024-11-10 10:08:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 10:08:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433489461] [2024-11-10 10:08:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433489461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:08:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943702427] [2024-11-10 10:08:58,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:08:58,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:08:58,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:58,850 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:08:58,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:08:58,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 10:08:58,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:08:58,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 10:08:58,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:08:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 10:08:59,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:08:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-10 10:08:59,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943702427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:08:59,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:08:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 28 [2024-11-10 10:08:59,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643245632] [2024-11-10 10:08:59,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:08:59,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-10 10:08:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-10 10:08:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2024-11-10 10:08:59,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:08:59,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 423 transitions, 8417 flow. Second operand has 29 states, 29 states have (on average 11.379310344827585) internal successors, (330), 29 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:59,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:59,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:08:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:03,646 INFO L124 PetriNetUnfolderBase]: 5233/12539 cut-off events. [2024-11-10 10:09:03,646 INFO L125 PetriNetUnfolderBase]: For 1725148/1726084 co-relation queries the response was YES. [2024-11-10 10:09:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103162 conditions, 12539 events. 5233/12539 cut-off events. For 1725148/1726084 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 103225 event pairs, 262 based on Foata normal form. 174/11538 useless extension candidates. Maximal degree in co-relation 103005. Up to 2346 conditions per place. [2024-11-10 10:09:03,870 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 206 selfloop transitions, 387 changer transitions 124/724 dead transitions. [2024-11-10 10:09:03,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 724 transitions, 17397 flow [2024-11-10 10:09:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-10 10:09:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-10 10:09:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 822 transitions. [2024-11-10 10:09:03,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5372549019607843 [2024-11-10 10:09:03,874 INFO L175 Difference]: Start difference. First operand has 363 places, 423 transitions, 8417 flow. Second operand 51 states and 822 transitions. [2024-11-10 10:09:03,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 724 transitions, 17397 flow [2024-11-10 10:09:07,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 724 transitions, 15044 flow, removed 997 selfloop flow, removed 37 redundant places. [2024-11-10 10:09:07,859 INFO L231 Difference]: Finished difference. Result has 380 places, 449 transitions, 8995 flow [2024-11-10 10:09:07,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6978, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8995, PETRI_PLACES=380, PETRI_TRANSITIONS=449} [2024-11-10 10:09:07,860 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-11-10 10:09:07,860 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 449 transitions, 8995 flow [2024-11-10 10:09:07,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.379310344827585) internal successors, (330), 29 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:07,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:07,860 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:07,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:09:08,061 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 [2024-11-10 10:09:08,061 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:09:08,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 648521557, now seen corresponding path program 10 times [2024-11-10 10:09:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:08,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171592651] [2024-11-10 10:09:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:08,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171592651] [2024-11-10 10:09:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171592651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:09:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100706672] [2024-11-10 10:09:08,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:09:08,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:09:08,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:09:08,432 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) [2024-11-10 10:09:08,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:09:08,494 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:09:08,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:09:08,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:09:08,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:09:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:08,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:09:09,000 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:09:09,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100706672] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:09:09,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:09:09,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 30 [2024-11-10 10:09:09,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780427812] [2024-11-10 10:09:09,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:09:09,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 10:09:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:09,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 10:09:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=737, Unknown=0, NotChecked=0, Total=930 [2024-11-10 10:09:09,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-11-10 10:09:09,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 449 transitions, 8995 flow. Second operand has 31 states, 31 states have (on average 11.129032258064516) internal successors, (345), 31 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:09,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:09,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-11-10 10:09:09,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:13,622 INFO L124 PetriNetUnfolderBase]: 5296/12668 cut-off events. [2024-11-10 10:09:13,622 INFO L125 PetriNetUnfolderBase]: For 1894645/1895321 co-relation queries the response was YES. [2024-11-10 10:09:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106330 conditions, 12668 events. 5296/12668 cut-off events. For 1894645/1895321 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 104640 event pairs, 58 based on Foata normal form. 255/11766 useless extension candidates. Maximal degree in co-relation 106170. Up to 2358 conditions per place. [2024-11-10 10:09:13,849 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 216 selfloop transitions, 420 changer transitions 151/794 dead transitions. [2024-11-10 10:09:13,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 794 transitions, 19286 flow [2024-11-10 10:09:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-10 10:09:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-10 10:09:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 937 transitions. [2024-11-10 10:09:13,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5385057471264367 [2024-11-10 10:09:13,852 INFO L175 Difference]: Start difference. First operand has 380 places, 449 transitions, 8995 flow. Second operand 58 states and 937 transitions. [2024-11-10 10:09:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 794 transitions, 19286 flow [2024-11-10 10:09:19,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 794 transitions, 17798 flow, removed 622 selfloop flow, removed 25 redundant places. [2024-11-10 10:09:19,073 INFO L231 Difference]: Finished difference. Result has 423 places, 462 transitions, 10006 flow [2024-11-10 10:09:19,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=7945, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=10006, PETRI_PLACES=423, PETRI_TRANSITIONS=462} [2024-11-10 10:09:19,074 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-11-10 10:09:19,075 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 462 transitions, 10006 flow [2024-11-10 10:09:19,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.129032258064516) internal successors, (345), 31 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:19,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:19,075 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:19,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:09:19,276 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 [2024-11-10 10:09:19,276 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:09:19,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:19,276 INFO L85 PathProgramCache]: Analyzing trace with hash -296488165, now seen corresponding path program 11 times [2024-11-10 10:09:19,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:19,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722504678] [2024-11-10 10:09:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:19,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 321 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:09:19,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722504678] [2024-11-10 10:09:19,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722504678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:09:19,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660130651] [2024-11-10 10:09:19,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:09:19,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:09:19,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:09:19,480 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) [2024-11-10 10:09:19,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:09:19,554 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-10 10:09:19,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:09:19,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:09:19,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:09:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 377 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:09:19,660 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:09:19,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660130651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:19,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:09:19,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-11-10 10:09:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674296366] [2024-11-10 10:09:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:19,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:09:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:09:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:09:19,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-10 10:09:19,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 462 transitions, 10006 flow. Second operand has 13 states, 13 states have (on average 12.692307692307692) internal successors, (165), 13 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:19,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:19,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-10 10:09:19,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand