./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/weaver/fibonacci.wvr.c -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 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:25:44,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:25:44,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:25:44,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:25:44,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:25:44,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:25:44,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:25:44,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:25:44,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:25:44,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:25:44,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:25:44,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:25:44,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:25:44,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:25:44,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:25:44,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:25:44,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:25:44,236 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:25:44,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:25:44,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:25:44,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:25:44,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:25:44,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:25:44,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:25:44,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:25:44,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:25:44,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:25:44,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:25:44,243 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:25:44,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:25:44,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:25:44,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:25:44,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:44,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:25:44,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:25:44,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:25:44,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:25:44,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-11-16 19:25:44,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:25:44,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:25:44,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:25:44,456 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:25:44,456 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:25:44,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-16 19:25:45,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:25:45,744 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:25:45,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-11-16 19:25:45,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53756d03c/ef4a527baed347a9b0b86574747952c0/FLAGd1d787b1e [2024-11-16 19:25:45,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53756d03c/ef4a527baed347a9b0b86574747952c0 [2024-11-16 19:25:45,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:25:45,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:25:45,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:45,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:25:45,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:25:45,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:45" (1/1) ... [2024-11-16 19:25:45,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af79b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:45, skipping insertion in model container [2024-11-16 19:25:45,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:45" (1/1) ... [2024-11-16 19:25:45,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:25:45,964 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/weaver/fibonacci.wvr.c[2356,2369] [2024-11-16 19:25:45,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:45,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:25:45,994 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/weaver/fibonacci.wvr.c[2356,2369] [2024-11-16 19:25:46,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:46,028 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:25:46,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46 WrapperNode [2024-11-16 19:25:46,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:46,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:46,032 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:25:46,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:25:46,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,078 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 158 [2024-11-16 19:25:46,081 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:46,082 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:25:46,082 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:25:46,082 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:25:46,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,110 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]. [2024-11-16 19:25:46,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:25:46,125 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:25:46,125 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:25:46,125 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:25:46,126 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (1/1) ... [2024-11-16 19:25:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:46,155 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) [2024-11-16 19:25:46,158 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 [2024-11-16 19:25:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:25:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:25:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:25:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:25:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:25:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:25:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:25:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:25:46,198 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:25:46,282 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:25:46,284 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:25:46,470 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:25:46,471 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:25:46,667 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:25:46,668 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:25:46,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:46 BoogieIcfgContainer [2024-11-16 19:25:46,669 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:25:46,671 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:25:46,671 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:25:46,673 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:25:46,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:25:45" (1/3) ... [2024-11-16 19:25:46,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7f185e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:46, skipping insertion in model container [2024-11-16 19:25:46,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:46" (2/3) ... [2024-11-16 19:25:46,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7f185e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:46, skipping insertion in model container [2024-11-16 19:25:46,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:46" (3/3) ... [2024-11-16 19:25:46,676 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-11-16 19:25:46,688 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:25:46,688 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:25:46,688 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:25:46,723 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:25:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow [2024-11-16 19:25:46,767 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-16 19:25:46,768 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:46,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-11-16 19:25:46,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow [2024-11-16 19:25:46,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow [2024-11-16 19:25:46,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:25:46,788 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;@3c194123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:25:46,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:25:46,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:25:46,799 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events. [2024-11-16 19:25:46,799 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:46,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:46,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:46,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:46,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash 8943355, now seen corresponding path program 1 times [2024-11-16 19:25:46,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:46,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709841176] [2024-11-16 19:25:46,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:46,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:46,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709841176] [2024-11-16 19:25:46,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709841176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:46,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:46,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:25:46,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083373244] [2024-11-16 19:25:46,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:46,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:25:46,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:25:46,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:25:46,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:46,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-16 19:25:46,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:46,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:46,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:47,044 INFO L124 PetriNetUnfolderBase]: 37/76 cut-off events. [2024-11-16 19:25:47,044 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:25:47,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 76 events. 37/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 180 event pairs, 22 based on Foata normal form. 15/81 useless extension candidates. Maximal degree in co-relation 128. Up to 68 conditions per place. [2024-11-16 19:25:47,047 INFO L140 encePairwiseOnDemand]: 22/24 looper letters, 14 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-16 19:25:47,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 78 flow [2024-11-16 19:25:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:25:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:25:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 30 transitions. [2024-11-16 19:25:47,056 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-16 19:25:47,057 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 54 flow. Second operand 2 states and 30 transitions. [2024-11-16 19:25:47,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 78 flow [2024-11-16 19:25:47,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 70 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:47,061 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-16 19:25:47,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-16 19:25:47,077 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-16 19:25:47,077 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-16 19:25:47,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2024-11-16 19:25:47,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:47,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:47,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:25:47,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:47,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:47,078 INFO L85 PathProgramCache]: Analyzing trace with hash -758162235, now seen corresponding path program 1 times [2024-11-16 19:25:47,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:47,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373137320] [2024-11-16 19:25:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:47,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:47,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373137320] [2024-11-16 19:25:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373137320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:47,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:47,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:47,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221825630] [2024-11-16 19:25:47,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:47,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:47,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:47,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:47,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:47,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:47,574 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-11-16 19:25:47,574 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:25:47,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 154 events. 67/154 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 545 event pairs, 11 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 286. Up to 72 conditions per place. [2024-11-16 19:25:47,576 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 26 selfloop transitions, 5 changer transitions 4/40 dead transitions. [2024-11-16 19:25:47,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 40 transitions, 160 flow [2024-11-16 19:25:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-16 19:25:47,578 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916666666666667 [2024-11-16 19:25:47,579 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 5 states and 71 transitions. [2024-11-16 19:25:47,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 40 transitions, 160 flow [2024-11-16 19:25:47,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:47,582 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 76 flow [2024-11-16 19:25:47,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-11-16 19:25:47,583 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2024-11-16 19:25:47,583 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 76 flow [2024-11-16 19:25:47,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:47,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:47,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:25:47,584 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:47,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 330540489, now seen corresponding path program 2 times [2024-11-16 19:25:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985639169] [2024-11-16 19:25:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985639169] [2024-11-16 19:25:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985639169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:47,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:47,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211990762] [2024-11-16 19:25:47,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:47,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:47,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:47,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:47,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:47,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:47,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:47,839 INFO L124 PetriNetUnfolderBase]: 65/144 cut-off events. [2024-11-16 19:25:47,840 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-16 19:25:47,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 144 events. 65/144 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 488 event pairs, 17 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 351. Up to 72 conditions per place. [2024-11-16 19:25:47,842 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 22 selfloop transitions, 6 changer transitions 4/37 dead transitions. [2024-11-16 19:25:47,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 37 transitions, 181 flow [2024-11-16 19:25:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:25:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:25:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-16 19:25:47,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-11-16 19:25:47,845 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 76 flow. Second operand 5 states and 67 transitions. [2024-11-16 19:25:47,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 37 transitions, 181 flow [2024-11-16 19:25:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 179 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:47,847 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 108 flow [2024-11-16 19:25:47,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-11-16 19:25:47,848 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 9 predicate places. [2024-11-16 19:25:47,848 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 108 flow [2024-11-16 19:25:47,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:47,849 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:47,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:25:47,850 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:47,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 560198788, now seen corresponding path program 1 times [2024-11-16 19:25:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758466847] [2024-11-16 19:25:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:47,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:47,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758466847] [2024-11-16 19:25:47,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758466847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:47,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610889441] [2024-11-16 19:25:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:47,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:47,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:47,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:47,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,034 INFO L124 PetriNetUnfolderBase]: 153/286 cut-off events. [2024-11-16 19:25:48,034 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2024-11-16 19:25:48,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 286 events. 153/286 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1184 event pairs, 54 based on Foata normal form. 6/280 useless extension candidates. Maximal degree in co-relation 785. Up to 161 conditions per place. [2024-11-16 19:25:48,038 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 35 selfloop transitions, 13 changer transitions 6/57 dead transitions. [2024-11-16 19:25:48,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 346 flow [2024-11-16 19:25:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:48,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-11-16 19:25:48,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-11-16 19:25:48,039 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 108 flow. Second operand 6 states and 77 transitions. [2024-11-16 19:25:48,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 346 flow [2024-11-16 19:25:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 329 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:48,042 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 197 flow [2024-11-16 19:25:48,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-16 19:25:48,044 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 15 predicate places. [2024-11-16 19:25:48,045 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 197 flow [2024-11-16 19:25:48,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,045 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,045 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:25:48,045 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2037118028, now seen corresponding path program 2 times [2024-11-16 19:25:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15793924] [2024-11-16 19:25:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15793924] [2024-11-16 19:25:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15793924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201234917] [2024-11-16 19:25:48,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:48,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:48,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:48,100 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) [2024-11-16 19:25:48,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:25:48,161 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:48,161 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:48,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:48,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:48,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201234917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:48,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:48,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 19:25:48,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044560738] [2024-11-16 19:25:48,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:48,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:25:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:48,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:25:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:25:48,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:48,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 197 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-11-16 19:25:48,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:48,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:48,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,370 INFO L124 PetriNetUnfolderBase]: 161/313 cut-off events. [2024-11-16 19:25:48,370 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-11-16 19:25:48,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 313 events. 161/313 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1319 event pairs, 32 based on Foata normal form. 7/312 useless extension candidates. Maximal degree in co-relation 1031. Up to 87 conditions per place. [2024-11-16 19:25:48,373 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 50 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-11-16 19:25:48,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 450 flow [2024-11-16 19:25:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-11-16 19:25:48,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-16 19:25:48,374 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 197 flow. Second operand 7 states and 88 transitions. [2024-11-16 19:25:48,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 450 flow [2024-11-16 19:25:48,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 448 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:48,378 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 261 flow [2024-11-16 19:25:48,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-11-16 19:25:48,378 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2024-11-16 19:25:48,378 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 261 flow [2024-11-16 19:25:48,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-11-16 19:25:48,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,379 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:48,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:48,583 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,584 INFO L85 PathProgramCache]: Analyzing trace with hash 228365840, now seen corresponding path program 3 times [2024-11-16 19:25:48,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12867347] [2024-11-16 19:25:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12867347] [2024-11-16 19:25:48,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12867347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:48,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:48,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:48,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001466142] [2024-11-16 19:25:48,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:48,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:48,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:48,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:48,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:48,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 261 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:48,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:48,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,739 INFO L124 PetriNetUnfolderBase]: 189/368 cut-off events. [2024-11-16 19:25:48,739 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-11-16 19:25:48,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 368 events. 189/368 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1636 event pairs, 65 based on Foata normal form. 6/366 useless extension candidates. Maximal degree in co-relation 1387. Up to 218 conditions per place. [2024-11-16 19:25:48,742 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 33 selfloop transitions, 19 changer transitions 6/61 dead transitions. [2024-11-16 19:25:48,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 523 flow [2024-11-16 19:25:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-11-16 19:25:48,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-11-16 19:25:48,744 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 261 flow. Second operand 6 states and 71 transitions. [2024-11-16 19:25:48,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 523 flow [2024-11-16 19:25:48,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 490 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:48,751 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 382 flow [2024-11-16 19:25:48,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-11-16 19:25:48,752 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2024-11-16 19:25:48,752 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 382 flow [2024-11-16 19:25:48,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,753 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:25:48,753 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1227905326, now seen corresponding path program 4 times [2024-11-16 19:25:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680730886] [2024-11-16 19:25:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680730886] [2024-11-16 19:25:48,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680730886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:48,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:48,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880254959] [2024-11-16 19:25:48,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:48,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:48,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:48,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-16 19:25:48,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-16 19:25:48,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:48,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-16 19:25:48,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,883 INFO L124 PetriNetUnfolderBase]: 146/301 cut-off events. [2024-11-16 19:25:48,883 INFO L125 PetriNetUnfolderBase]: For 1361/1376 co-relation queries the response was YES. [2024-11-16 19:25:48,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 301 events. 146/301 cut-off events. For 1361/1376 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1330 event pairs, 43 based on Foata normal form. 5/289 useless extension candidates. Maximal degree in co-relation 1275. Up to 155 conditions per place. [2024-11-16 19:25:48,885 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 38 selfloop transitions, 14 changer transitions 9/68 dead transitions. [2024-11-16 19:25:48,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 619 flow [2024-11-16 19:25:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-16 19:25:48,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-16 19:25:48,886 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 382 flow. Second operand 7 states and 83 transitions. [2024-11-16 19:25:48,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 619 flow [2024-11-16 19:25:48,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 588 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:48,890 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 386 flow [2024-11-16 19:25:48,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-11-16 19:25:48,891 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2024-11-16 19:25:48,891 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 386 flow [2024-11-16 19:25:48,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-16 19:25:48,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:48,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:25:48,891 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,892 INFO L85 PathProgramCache]: Analyzing trace with hash 195394622, now seen corresponding path program 5 times [2024-11-16 19:25:48,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154693010] [2024-11-16 19:25:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154693010] [2024-11-16 19:25:48,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154693010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670393514] [2024-11-16 19:25:48,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:25:48,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:48,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:48,930 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) [2024-11-16 19:25:48,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:25:48,976 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:48,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:48,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:48,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:49,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670393514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:49,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 19:25:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308055469] [2024-11-16 19:25:49,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:49,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:49,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2024-11-16 19:25:49,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:49,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:49,211 INFO L124 PetriNetUnfolderBase]: 193/383 cut-off events. [2024-11-16 19:25:49,211 INFO L125 PetriNetUnfolderBase]: For 1980/1983 co-relation queries the response was YES. [2024-11-16 19:25:49,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 383 events. 193/383 cut-off events. For 1980/1983 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1684 event pairs, 42 based on Foata normal form. 7/382 useless extension candidates. Maximal degree in co-relation 1671. Up to 145 conditions per place. [2024-11-16 19:25:49,213 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 53 selfloop transitions, 24 changer transitions 2/82 dead transitions. [2024-11-16 19:25:49,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 787 flow [2024-11-16 19:25:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-11-16 19:25:49,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-16 19:25:49,214 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 386 flow. Second operand 10 states and 112 transitions. [2024-11-16 19:25:49,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 787 flow [2024-11-16 19:25:49,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 742 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-11-16 19:25:49,218 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 484 flow [2024-11-16 19:25:49,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=484, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-11-16 19:25:49,218 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2024-11-16 19:25:49,218 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 484 flow [2024-11-16 19:25:49,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2024-11-16 19:25:49,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:49,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:49,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:49,419 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 [2024-11-16 19:25:49,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:49,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1132999468, now seen corresponding path program 1 times [2024-11-16 19:25:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283552666] [2024-11-16 19:25:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:49,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283552666] [2024-11-16 19:25:49,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283552666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:49,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:49,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188675441] [2024-11-16 19:25:49,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:49,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2024-11-16 19:25:49,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 484 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-16 19:25:49,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2024-11-16 19:25:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:49,545 INFO L124 PetriNetUnfolderBase]: 153/330 cut-off events. [2024-11-16 19:25:49,545 INFO L125 PetriNetUnfolderBase]: For 1820/1856 co-relation queries the response was YES. [2024-11-16 19:25:49,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 330 events. 153/330 cut-off events. For 1820/1856 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1544 event pairs, 49 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 1525. Up to 181 conditions per place. [2024-11-16 19:25:49,547 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 47 selfloop transitions, 12 changer transitions 11/75 dead transitions. [2024-11-16 19:25:49,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 75 transitions, 727 flow [2024-11-16 19:25:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:49,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-11-16 19:25:49,548 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-16 19:25:49,548 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 484 flow. Second operand 7 states and 86 transitions. [2024-11-16 19:25:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 75 transitions, 727 flow [2024-11-16 19:25:49,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 667 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-16 19:25:49,552 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 438 flow [2024-11-16 19:25:49,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2024-11-16 19:25:49,553 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-16 19:25:49,553 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 438 flow [2024-11-16 19:25:49,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2024-11-16 19:25:49,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:49,553 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:49,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 19:25:49,553 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:49,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash -377177938, now seen corresponding path program 2 times [2024-11-16 19:25:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281787483] [2024-11-16 19:25:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281787483] [2024-11-16 19:25:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281787483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771290423] [2024-11-16 19:25:49,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:49,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:49,594 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) [2024-11-16 19:25:49,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:25:49,643 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:49,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:49,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:49,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771290423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:49,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:49,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 19:25:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814235644] [2024-11-16 19:25:49,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:25:49,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:25:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:25:49,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:49,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 438 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-11-16 19:25:49,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:49,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:49,840 INFO L124 PetriNetUnfolderBase]: 194/380 cut-off events. [2024-11-16 19:25:49,840 INFO L125 PetriNetUnfolderBase]: For 2111/2111 co-relation queries the response was YES. [2024-11-16 19:25:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 380 events. 194/380 cut-off events. For 2111/2111 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1672 event pairs, 31 based on Foata normal form. 6/382 useless extension candidates. Maximal degree in co-relation 1738. Up to 115 conditions per place. [2024-11-16 19:25:49,844 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 54 selfloop transitions, 22 changer transitions 1/80 dead transitions. [2024-11-16 19:25:49,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 774 flow [2024-11-16 19:25:49,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-11-16 19:25:49,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-11-16 19:25:49,845 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 438 flow. Second operand 7 states and 83 transitions. [2024-11-16 19:25:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 774 flow [2024-11-16 19:25:49,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 728 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-16 19:25:49,850 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 506 flow [2024-11-16 19:25:49,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-11-16 19:25:49,852 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2024-11-16 19:25:49,853 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 506 flow [2024-11-16 19:25:49,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-11-16 19:25:49,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:49,853 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:49,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:50,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,054 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:50,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash 404513534, now seen corresponding path program 3 times [2024-11-16 19:25:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:50,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140820593] [2024-11-16 19:25:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:50,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140820593] [2024-11-16 19:25:50,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140820593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:50,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:50,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:50,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567302847] [2024-11-16 19:25:50,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:50,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:50,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:50,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:50,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:50,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:50,198 INFO L124 PetriNetUnfolderBase]: 195/385 cut-off events. [2024-11-16 19:25:50,198 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2024-11-16 19:25:50,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 385 events. 195/385 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1733 event pairs, 77 based on Foata normal form. 3/382 useless extension candidates. Maximal degree in co-relation 1848. Up to 266 conditions per place. [2024-11-16 19:25:50,200 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 14 changer transitions 8/68 dead transitions. [2024-11-16 19:25:50,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 734 flow [2024-11-16 19:25:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-11-16 19:25:50,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-11-16 19:25:50,201 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 506 flow. Second operand 6 states and 67 transitions. [2024-11-16 19:25:50,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 734 flow [2024-11-16 19:25:50,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 704 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-16 19:25:50,205 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 492 flow [2024-11-16 19:25:50,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-11-16 19:25:50,206 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2024-11-16 19:25:50,210 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 492 flow [2024-11-16 19:25:50,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:50,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:50,210 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:50,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 19:25:50,210 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:50,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2091074568, now seen corresponding path program 4 times [2024-11-16 19:25:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605470923] [2024-11-16 19:25:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:50,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605470923] [2024-11-16 19:25:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605470923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444652516] [2024-11-16 19:25:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:25:50,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:50,251 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) [2024-11-16 19:25:50,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:25:50,298 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:25:50,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:50,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:50,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444652516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:50,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 19:25:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180240856] [2024-11-16 19:25:50,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:50,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:50,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:50,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2024-11-16 19:25:50,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:50,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:50,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:50,484 INFO L124 PetriNetUnfolderBase]: 197/384 cut-off events. [2024-11-16 19:25:50,484 INFO L125 PetriNetUnfolderBase]: For 2315/2315 co-relation queries the response was YES. [2024-11-16 19:25:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 384 events. 197/384 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1679 event pairs, 77 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1847. Up to 272 conditions per place. [2024-11-16 19:25:50,487 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 47 selfloop transitions, 17 changer transitions 1/68 dead transitions. [2024-11-16 19:25:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 733 flow [2024-11-16 19:25:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-16 19:25:50,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-16 19:25:50,488 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 492 flow. Second operand 6 states and 68 transitions. [2024-11-16 19:25:50,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 733 flow [2024-11-16 19:25:50,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 697 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-11-16 19:25:50,492 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 535 flow [2024-11-16 19:25:50,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=535, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-16 19:25:50,494 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2024-11-16 19:25:50,494 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 535 flow [2024-11-16 19:25:50,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2024-11-16 19:25:50,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:50,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:50,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:50,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,695 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:50,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:50,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1069468802, now seen corresponding path program 6 times [2024-11-16 19:25:50,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:50,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688860438] [2024-11-16 19:25:50,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:50,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:50,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688860438] [2024-11-16 19:25:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688860438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:50,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914958670] [2024-11-16 19:25:50,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:25:50,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:50,761 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) [2024-11-16 19:25:50,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:25:50,817 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-16 19:25:50,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:50,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:50,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914958670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:50,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:50,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 19:25:50,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540427483] [2024-11-16 19:25:50,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:50,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:50,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:50,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 535 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-11-16 19:25:50,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:50,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:50,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:50,979 INFO L124 PetriNetUnfolderBase]: 177/347 cut-off events. [2024-11-16 19:25:50,979 INFO L125 PetriNetUnfolderBase]: For 2376/2384 co-relation queries the response was YES. [2024-11-16 19:25:50,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 347 events. 177/347 cut-off events. For 2376/2384 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1492 event pairs, 67 based on Foata normal form. 13/352 useless extension candidates. Maximal degree in co-relation 1700. Up to 234 conditions per place. [2024-11-16 19:25:50,981 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 20 changer transitions 2/68 dead transitions. [2024-11-16 19:25:50,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 734 flow [2024-11-16 19:25:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-16 19:25:50,982 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-16 19:25:50,982 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 535 flow. Second operand 6 states and 70 transitions. [2024-11-16 19:25:50,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 734 flow [2024-11-16 19:25:50,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 697 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:50,986 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 538 flow [2024-11-16 19:25:50,986 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=538, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-16 19:25:50,987 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-16 19:25:50,987 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 538 flow [2024-11-16 19:25:50,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-11-16 19:25:50,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:50,987 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:51,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:25:51,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 19:25:51,189 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:51,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:51,189 INFO L85 PathProgramCache]: Analyzing trace with hash -136950346, now seen corresponding path program 5 times [2024-11-16 19:25:51,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:51,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657281575] [2024-11-16 19:25:51,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:51,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657281575] [2024-11-16 19:25:51,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657281575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:51,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614623046] [2024-11-16 19:25:51,222 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:25:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:51,224 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) [2024-11-16 19:25:51,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:25:51,267 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:51,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:51,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 19:25:51,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614623046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:51,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 19:25:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705250379] [2024-11-16 19:25:51,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:51,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:51,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:51,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-16 19:25:51,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:51,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 538 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2024-11-16 19:25:51,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:51,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:51,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:51,437 INFO L124 PetriNetUnfolderBase]: 165/333 cut-off events. [2024-11-16 19:25:51,437 INFO L125 PetriNetUnfolderBase]: For 1968/1968 co-relation queries the response was YES. [2024-11-16 19:25:51,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 333 events. 165/333 cut-off events. For 1968/1968 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 27 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1562. Up to 107 conditions per place. [2024-11-16 19:25:51,439 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 46 selfloop transitions, 31 changer transitions 1/81 dead transitions. [2024-11-16 19:25:51,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 848 flow [2024-11-16 19:25:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:51,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-11-16 19:25:51,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-16 19:25:51,440 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 538 flow. Second operand 10 states and 105 transitions. [2024-11-16 19:25:51,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 848 flow [2024-11-16 19:25:51,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 764 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-11-16 19:25:51,445 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 562 flow [2024-11-16 19:25:51,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=562, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-11-16 19:25:51,445 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2024-11-16 19:25:51,445 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 562 flow [2024-11-16 19:25:51,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2024-11-16 19:25:51,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:51,446 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:51,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:25:51,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:51,650 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:51,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:51,650 INFO L85 PathProgramCache]: Analyzing trace with hash 56832638, now seen corresponding path program 6 times [2024-11-16 19:25:51,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:51,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752136961] [2024-11-16 19:25:51,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:51,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752136961] [2024-11-16 19:25:51,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752136961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:51,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:51,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:25:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372206949] [2024-11-16 19:25:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:51,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:51,701 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:51,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 562 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:51,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:51,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:51,780 INFO L124 PetriNetUnfolderBase]: 153/300 cut-off events. [2024-11-16 19:25:51,780 INFO L125 PetriNetUnfolderBase]: For 1677/1681 co-relation queries the response was YES. [2024-11-16 19:25:51,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 300 events. 153/300 cut-off events. For 1677/1681 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1227 event pairs, 50 based on Foata normal form. 7/300 useless extension candidates. Maximal degree in co-relation 1432. Up to 201 conditions per place. [2024-11-16 19:25:51,782 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 42 selfloop transitions, 17 changer transitions 5/67 dead transitions. [2024-11-16 19:25:51,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 67 transitions, 706 flow [2024-11-16 19:25:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-11-16 19:25:51,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-11-16 19:25:51,783 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 562 flow. Second operand 6 states and 62 transitions. [2024-11-16 19:25:51,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 67 transitions, 706 flow [2024-11-16 19:25:51,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 622 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-16 19:25:51,786 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 483 flow [2024-11-16 19:25:51,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=483, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2024-11-16 19:25:51,787 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2024-11-16 19:25:51,787 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 483 flow [2024-11-16 19:25:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:51,788 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:51,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 19:25:51,788 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:51,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:51,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1745520715, now seen corresponding path program 1 times [2024-11-16 19:25:51,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:51,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969534743] [2024-11-16 19:25:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969534743] [2024-11-16 19:25:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969534743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138280366] [2024-11-16 19:25:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:51,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:51,921 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) [2024-11-16 19:25:51,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:25:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:51,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:51,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:52,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138280366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:52,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:52,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-16 19:25:52,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948777726] [2024-11-16 19:25:52,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:52,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 19:25:52,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:52,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 19:25:52,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-16 19:25:52,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:52,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 483 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-11-16 19:25:52,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:52,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:52,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:52,407 INFO L124 PetriNetUnfolderBase]: 164/385 cut-off events. [2024-11-16 19:25:52,407 INFO L125 PetriNetUnfolderBase]: For 1808/1830 co-relation queries the response was YES. [2024-11-16 19:25:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 385 events. 164/385 cut-off events. For 1808/1830 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1825 event pairs, 13 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1628. Up to 180 conditions per place. [2024-11-16 19:25:52,410 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 4/95 dead transitions. [2024-11-16 19:25:52,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 95 transitions, 894 flow [2024-11-16 19:25:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-11-16 19:25:52,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-16 19:25:52,410 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 483 flow. Second operand 7 states and 96 transitions. [2024-11-16 19:25:52,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 95 transitions, 894 flow [2024-11-16 19:25:52,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 812 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:52,415 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 609 flow [2024-11-16 19:25:52,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=609, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-16 19:25:52,416 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 51 predicate places. [2024-11-16 19:25:52,416 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 609 flow [2024-11-16 19:25:52,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-11-16 19:25:52,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:52,417 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:52,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 19:25:52,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:52,617 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:52,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -785924823, now seen corresponding path program 2 times [2024-11-16 19:25:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132161721] [2024-11-16 19:25:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132161721] [2024-11-16 19:25:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132161721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073450847] [2024-11-16 19:25:52,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:52,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:52,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:52,732 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) [2024-11-16 19:25:52,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:25:52,778 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:52,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:52,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:52,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:52,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073450847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:53,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:53,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:25:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926090102] [2024-11-16 19:25:53,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:53,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:25:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:25:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:25:53,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:53,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 609 flow. Second operand has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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) [2024-11-16 19:25:53,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:53,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:53,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:53,200 INFO L124 PetriNetUnfolderBase]: 162/377 cut-off events. [2024-11-16 19:25:53,200 INFO L125 PetriNetUnfolderBase]: For 1971/1995 co-relation queries the response was YES. [2024-11-16 19:25:53,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 377 events. 162/377 cut-off events. For 1971/1995 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1782 event pairs, 13 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1678. Up to 180 conditions per place. [2024-11-16 19:25:53,202 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 20 changer transitions 4/94 dead transitions. [2024-11-16 19:25:53,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 908 flow [2024-11-16 19:25:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:53,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:53,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-16 19:25:53,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-16 19:25:53,203 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 609 flow. Second operand 7 states and 94 transitions. [2024-11-16 19:25:53,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 908 flow [2024-11-16 19:25:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 847 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:53,207 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 631 flow [2024-11-16 19:25:53,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=631, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2024-11-16 19:25:53,208 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 55 predicate places. [2024-11-16 19:25:53,208 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 631 flow [2024-11-16 19:25:53,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.846153846153847) internal successors, (128), 13 states have internal predecessors, (128), 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) [2024-11-16 19:25:53,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:53,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:53,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:25:53,412 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,SelfDestructingSolverStorable16 [2024-11-16 19:25:53,413 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:53,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1739015511, now seen corresponding path program 3 times [2024-11-16 19:25:53,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:53,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574563848] [2024-11-16 19:25:53,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:53,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:53,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574563848] [2024-11-16 19:25:53,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574563848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:53,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392047487] [2024-11-16 19:25:53,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:25:53,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:53,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:53,527 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) [2024-11-16 19:25:53,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:25:53,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 19:25:53,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:53,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:53,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392047487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:53,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-16 19:25:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584717981] [2024-11-16 19:25:53,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:53,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:25:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:25:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:25:53,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:53,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 631 flow. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-11-16 19:25:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:53,969 INFO L124 PetriNetUnfolderBase]: 161/370 cut-off events. [2024-11-16 19:25:53,970 INFO L125 PetriNetUnfolderBase]: For 1941/1967 co-relation queries the response was YES. [2024-11-16 19:25:53,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 370 events. 161/370 cut-off events. For 1941/1967 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1756 event pairs, 13 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1637. Up to 200 conditions per place. [2024-11-16 19:25:53,972 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 65 selfloop transitions, 20 changer transitions 4/94 dead transitions. [2024-11-16 19:25:53,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 922 flow [2024-11-16 19:25:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-11-16 19:25:53,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-16 19:25:53,973 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 631 flow. Second operand 7 states and 91 transitions. [2024-11-16 19:25:53,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 922 flow [2024-11-16 19:25:53,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 877 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:53,978 INFO L231 Difference]: Finished difference. Result has 83 places, 76 transitions, 701 flow [2024-11-16 19:25:53,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=701, PETRI_PLACES=83, PETRI_TRANSITIONS=76} [2024-11-16 19:25:53,978 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-11-16 19:25:53,978 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 76 transitions, 701 flow [2024-11-16 19:25:53,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 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) [2024-11-16 19:25:53,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:53,978 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:53,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 19:25:54,179 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,SelfDestructingSolverStorable17 [2024-11-16 19:25:54,179 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:54,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1607993295, now seen corresponding path program 4 times [2024-11-16 19:25:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:54,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577544216] [2024-11-16 19:25:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:54,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:54,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577544216] [2024-11-16 19:25:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577544216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787941288] [2024-11-16 19:25:54,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:25:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:54,292 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) [2024-11-16 19:25:54,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:25:54,338 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:25:54,339 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:54,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:54,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:54,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:54,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787941288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:54,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:25:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137112899] [2024-11-16 19:25:54,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:54,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:25:54,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:54,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:25:54,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:25:54,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:54,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 701 flow. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 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) [2024-11-16 19:25:54,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:54,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:54,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:54,695 INFO L124 PetriNetUnfolderBase]: 198/462 cut-off events. [2024-11-16 19:25:54,695 INFO L125 PetriNetUnfolderBase]: For 2440/2475 co-relation queries the response was YES. [2024-11-16 19:25:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 462 events. 198/462 cut-off events. For 2440/2475 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2409 event pairs, 14 based on Foata normal form. 5/463 useless extension candidates. Maximal degree in co-relation 2081. Up to 270 conditions per place. [2024-11-16 19:25:54,698 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 80 selfloop transitions, 19 changer transitions 4/108 dead transitions. [2024-11-16 19:25:54,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 108 transitions, 1118 flow [2024-11-16 19:25:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-16 19:25:54,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-16 19:25:54,699 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 701 flow. Second operand 7 states and 90 transitions. [2024-11-16 19:25:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 108 transitions, 1118 flow [2024-11-16 19:25:54,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 108 transitions, 1084 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:54,705 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 863 flow [2024-11-16 19:25:54,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2024-11-16 19:25:54,705 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 64 predicate places. [2024-11-16 19:25:54,705 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 863 flow [2024-11-16 19:25:54,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 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) [2024-11-16 19:25:54,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:54,706 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:54,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:54,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:54,906 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:54,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash -87342619, now seen corresponding path program 5 times [2024-11-16 19:25:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211338358] [2024-11-16 19:25:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211338358] [2024-11-16 19:25:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211338358] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902292715] [2024-11-16 19:25:55,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:25:55,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:55,031 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) [2024-11-16 19:25:55,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 19:25:55,093 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:55,093 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:55,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:55,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902292715] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:55,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-16 19:25:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519241856] [2024-11-16 19:25:55,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 19:25:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:55,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 19:25:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-16 19:25:55,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:55,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 863 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-11-16 19:25:55,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:55,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:55,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:55,458 INFO L124 PetriNetUnfolderBase]: 198/468 cut-off events. [2024-11-16 19:25:55,459 INFO L125 PetriNetUnfolderBase]: For 2810/2845 co-relation queries the response was YES. [2024-11-16 19:25:55,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 468 events. 198/468 cut-off events. For 2810/2845 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2438 event pairs, 14 based on Foata normal form. 5/469 useless extension candidates. Maximal degree in co-relation 2206. Up to 272 conditions per place. [2024-11-16 19:25:55,462 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 80 selfloop transitions, 20 changer transitions 4/109 dead transitions. [2024-11-16 19:25:55,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 109 transitions, 1191 flow [2024-11-16 19:25:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-11-16 19:25:55,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-16 19:25:55,463 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 863 flow. Second operand 7 states and 90 transitions. [2024-11-16 19:25:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 109 transitions, 1191 flow [2024-11-16 19:25:55,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 1142 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:55,470 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 903 flow [2024-11-16 19:25:55,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-11-16 19:25:55,470 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 70 predicate places. [2024-11-16 19:25:55,470 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 903 flow [2024-11-16 19:25:55,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-11-16 19:25:55,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:55,471 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:55,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 19:25:55,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,674 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:55,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2028938391, now seen corresponding path program 6 times [2024-11-16 19:25:55,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:55,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528688791] [2024-11-16 19:25:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:55,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528688791] [2024-11-16 19:25:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528688791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007772457] [2024-11-16 19:25:55,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:25:55,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:55,799 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) [2024-11-16 19:25:55,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 19:25:55,854 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:25:55,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:55,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:25:55,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:56,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007772457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:56,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:56,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-16 19:25:56,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957859067] [2024-11-16 19:25:56,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:56,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:25:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:56,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:25:56,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:25:56,092 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:25:56,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 903 flow. Second operand has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 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) [2024-11-16 19:25:56,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:56,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:25:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:56,259 INFO L124 PetriNetUnfolderBase]: 197/461 cut-off events. [2024-11-16 19:25:56,260 INFO L125 PetriNetUnfolderBase]: For 2807/2846 co-relation queries the response was YES. [2024-11-16 19:25:56,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 461 events. 197/461 cut-off events. For 2807/2846 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2398 event pairs, 14 based on Foata normal form. 9/466 useless extension candidates. Maximal degree in co-relation 2204. Up to 286 conditions per place. [2024-11-16 19:25:56,264 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 78 selfloop transitions, 20 changer transitions 4/107 dead transitions. [2024-11-16 19:25:56,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 107 transitions, 1200 flow [2024-11-16 19:25:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:25:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:25:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-11-16 19:25:56,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-16 19:25:56,266 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 903 flow. Second operand 7 states and 85 transitions. [2024-11-16 19:25:56,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 107 transitions, 1200 flow [2024-11-16 19:25:56,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 107 transitions, 1157 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:56,273 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 973 flow [2024-11-16 19:25:56,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-11-16 19:25:56,274 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 74 predicate places. [2024-11-16 19:25:56,274 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 973 flow [2024-11-16 19:25:56,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.0) internal successors, (120), 12 states have internal predecessors, (120), 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) [2024-11-16 19:25:56,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:56,275 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:56,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 19:25:56,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 19:25:56,475 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:56,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash -562905444, now seen corresponding path program 7 times [2024-11-16 19:25:56,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853094205] [2024-11-16 19:25:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:56,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:56,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853094205] [2024-11-16 19:25:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853094205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470602952] [2024-11-16 19:25:56,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:25:56,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:56,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:56,528 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:56,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 19:25:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:56,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:25:56,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:56,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470602952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:56,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:56,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 19:25:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117211779] [2024-11-16 19:25:56,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:56,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:25:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:25:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:25:56,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:56,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 973 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 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) [2024-11-16 19:25:56,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:56,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:56,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:56,876 INFO L124 PetriNetUnfolderBase]: 341/675 cut-off events. [2024-11-16 19:25:56,876 INFO L125 PetriNetUnfolderBase]: For 4154/4154 co-relation queries the response was YES. [2024-11-16 19:25:56,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3343 conditions, 675 events. 341/675 cut-off events. For 4154/4154 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3522 event pairs, 50 based on Foata normal form. 7/677 useless extension candidates. Maximal degree in co-relation 3305. Up to 164 conditions per place. [2024-11-16 19:25:56,881 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 51 changer transitions 0/143 dead transitions. [2024-11-16 19:25:56,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 143 transitions, 1602 flow [2024-11-16 19:25:56,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:56,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-16 19:25:56,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-11-16 19:25:56,881 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 973 flow. Second operand 10 states and 119 transitions. [2024-11-16 19:25:56,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 143 transitions, 1602 flow [2024-11-16 19:25:56,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 143 transitions, 1564 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:56,891 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 1240 flow [2024-11-16 19:25:56,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1240, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2024-11-16 19:25:56,893 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 85 predicate places. [2024-11-16 19:25:56,893 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 1240 flow [2024-11-16 19:25:56,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 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) [2024-11-16 19:25:56,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:56,893 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:56,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 19:25:57,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 19:25:57,094 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:57,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1212689778, now seen corresponding path program 8 times [2024-11-16 19:25:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624810022] [2024-11-16 19:25:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:57,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624810022] [2024-11-16 19:25:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624810022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:57,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697685177] [2024-11-16 19:25:57,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:57,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:57,159 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:57,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 19:25:57,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:57,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:57,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:25:57,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697685177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:57,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:57,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:25:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397551571] [2024-11-16 19:25:57,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:57,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:25:57,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:57,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:25:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:25:57,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:57,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 1240 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:57,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:57,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:57,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:57,563 INFO L124 PetriNetUnfolderBase]: 410/809 cut-off events. [2024-11-16 19:25:57,563 INFO L125 PetriNetUnfolderBase]: For 8857/8857 co-relation queries the response was YES. [2024-11-16 19:25:57,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 809 events. 410/809 cut-off events. For 8857/8857 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4305 event pairs, 62 based on Foata normal form. 27/831 useless extension candidates. Maximal degree in co-relation 4518. Up to 284 conditions per place. [2024-11-16 19:25:57,570 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 91 selfloop transitions, 70 changer transitions 0/164 dead transitions. [2024-11-16 19:25:57,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 164 transitions, 2148 flow [2024-11-16 19:25:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:25:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:25:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-16 19:25:57,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-16 19:25:57,571 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 1240 flow. Second operand 15 states and 159 transitions. [2024-11-16 19:25:57,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 164 transitions, 2148 flow [2024-11-16 19:25:57,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 164 transitions, 1982 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:57,585 INFO L231 Difference]: Finished difference. Result has 129 places, 132 transitions, 1723 flow [2024-11-16 19:25:57,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1723, PETRI_PLACES=129, PETRI_TRANSITIONS=132} [2024-11-16 19:25:57,586 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2024-11-16 19:25:57,586 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 132 transitions, 1723 flow [2024-11-16 19:25:57,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:57,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:57,586 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:57,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:57,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:57,791 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:57,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -701526148, now seen corresponding path program 9 times [2024-11-16 19:25:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184929257] [2024-11-16 19:25:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:57,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184929257] [2024-11-16 19:25:57,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184929257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553373016] [2024-11-16 19:25:57,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:25:57,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:57,863 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:57,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 19:25:57,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:25:57,913 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:57,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:25:57,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553373016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:57,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:57,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:25:57,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328508597] [2024-11-16 19:25:57,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:57,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:25:57,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:57,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:25:57,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:25:57,997 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:57,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 1723 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-16 19:25:57,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:57,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:57,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:58,302 INFO L124 PetriNetUnfolderBase]: 522/1016 cut-off events. [2024-11-16 19:25:58,302 INFO L125 PetriNetUnfolderBase]: For 18038/18038 co-relation queries the response was YES. [2024-11-16 19:25:58,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 1016 events. 522/1016 cut-off events. For 18038/18038 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5561 event pairs, 54 based on Foata normal form. 18/1025 useless extension candidates. Maximal degree in co-relation 6484. Up to 268 conditions per place. [2024-11-16 19:25:58,311 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 96 selfloop transitions, 105 changer transitions 0/204 dead transitions. [2024-11-16 19:25:58,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 204 transitions, 2956 flow [2024-11-16 19:25:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:25:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:25:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 178 transitions. [2024-11-16 19:25:58,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-11-16 19:25:58,313 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 1723 flow. Second operand 16 states and 178 transitions. [2024-11-16 19:25:58,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 204 transitions, 2956 flow [2024-11-16 19:25:58,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 204 transitions, 2700 flow, removed 119 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:58,339 INFO L231 Difference]: Finished difference. Result has 149 places, 166 transitions, 2337 flow [2024-11-16 19:25:58,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2337, PETRI_PLACES=149, PETRI_TRANSITIONS=166} [2024-11-16 19:25:58,340 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 125 predicate places. [2024-11-16 19:25:58,340 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 166 transitions, 2337 flow [2024-11-16 19:25:58,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-16 19:25:58,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:58,340 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:58,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-16 19:25:58,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:58,541 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:58,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -168224280, now seen corresponding path program 10 times [2024-11-16 19:25:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:58,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468948699] [2024-11-16 19:25:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:58,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:58,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468948699] [2024-11-16 19:25:58,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468948699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:58,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244912760] [2024-11-16 19:25:58,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:25:58,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:58,594 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:58,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 19:25:58,643 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:25:58,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:58,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:25:58,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:58,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244912760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:58,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:58,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:25:58,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641040674] [2024-11-16 19:25:58,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:58,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:25:58,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:25:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:25:58,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:58,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 166 transitions, 2337 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:25:58,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:58,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:58,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:59,104 INFO L124 PetriNetUnfolderBase]: 532/1050 cut-off events. [2024-11-16 19:25:59,105 INFO L125 PetriNetUnfolderBase]: For 23849/23849 co-relation queries the response was YES. [2024-11-16 19:25:59,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 1050 events. 532/1050 cut-off events. For 23849/23849 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5863 event pairs, 60 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 7372. Up to 305 conditions per place. [2024-11-16 19:25:59,114 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 110 selfloop transitions, 129 changer transitions 11/253 dead transitions. [2024-11-16 19:25:59,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 253 transitions, 4003 flow [2024-11-16 19:25:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 19:25:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-16 19:25:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 200 transitions. [2024-11-16 19:25:59,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-11-16 19:25:59,116 INFO L175 Difference]: Start difference. First operand has 149 places, 166 transitions, 2337 flow. Second operand 20 states and 200 transitions. [2024-11-16 19:25:59,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 253 transitions, 4003 flow [2024-11-16 19:25:59,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 253 transitions, 3628 flow, removed 125 selfloop flow, removed 8 redundant places. [2024-11-16 19:25:59,149 INFO L231 Difference]: Finished difference. Result has 166 places, 208 transitions, 3027 flow [2024-11-16 19:25:59,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3027, PETRI_PLACES=166, PETRI_TRANSITIONS=208} [2024-11-16 19:25:59,150 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 142 predicate places. [2024-11-16 19:25:59,150 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 208 transitions, 3027 flow [2024-11-16 19:25:59,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:25:59,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:59,151 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:59,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:59,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-16 19:25:59,351 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:59,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -647844416, now seen corresponding path program 11 times [2024-11-16 19:25:59,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:59,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084901885] [2024-11-16 19:25:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:59,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:59,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:59,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084901885] [2024-11-16 19:25:59,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084901885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:59,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899613353] [2024-11-16 19:25:59,410 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:25:59,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:59,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:59,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:59,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 19:25:59,462 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:25:59,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:59,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:25:59,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:59,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899613353] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:25:59,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:25:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 19:25:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213672117] [2024-11-16 19:25:59,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:25:59,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:25:59,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:25:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:25:59,568 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:25:59,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 208 transitions, 3027 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 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) [2024-11-16 19:25:59,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:59,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:25:59,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:00,014 INFO L124 PetriNetUnfolderBase]: 729/1425 cut-off events. [2024-11-16 19:26:00,015 INFO L125 PetriNetUnfolderBase]: For 31710/31713 co-relation queries the response was YES. [2024-11-16 19:26:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10231 conditions, 1425 events. 729/1425 cut-off events. For 31710/31713 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8361 event pairs, 60 based on Foata normal form. 14/1432 useless extension candidates. Maximal degree in co-relation 10165. Up to 376 conditions per place. [2024-11-16 19:26:00,027 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 146 selfloop transitions, 205 changer transitions 0/354 dead transitions. [2024-11-16 19:26:00,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 354 transitions, 5671 flow [2024-11-16 19:26:00,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:26:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:26:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2024-11-16 19:26:00,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4221014492753623 [2024-11-16 19:26:00,028 INFO L175 Difference]: Start difference. First operand has 166 places, 208 transitions, 3027 flow. Second operand 23 states and 233 transitions. [2024-11-16 19:26:00,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 354 transitions, 5671 flow [2024-11-16 19:26:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 354 transitions, 5264 flow, removed 141 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:00,081 INFO L231 Difference]: Finished difference. Result has 188 places, 301 transitions, 4805 flow [2024-11-16 19:26:00,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4805, PETRI_PLACES=188, PETRI_TRANSITIONS=301} [2024-11-16 19:26:00,082 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 164 predicate places. [2024-11-16 19:26:00,082 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 301 transitions, 4805 flow [2024-11-16 19:26:00,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 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) [2024-11-16 19:26:00,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:00,082 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:00,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:00,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-16 19:26:00,282 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:00,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:00,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1091120042, now seen corresponding path program 12 times [2024-11-16 19:26:00,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:00,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991439103] [2024-11-16 19:26:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:00,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991439103] [2024-11-16 19:26:00,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991439103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:00,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702346732] [2024-11-16 19:26:00,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:00,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:00,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:00,345 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:00,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 19:26:00,397 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-16 19:26:00,397 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:00,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:00,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:00,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:00,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702346732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:00,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:00,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:00,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476071146] [2024-11-16 19:26:00,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:00,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:00,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:00,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 301 transitions, 4805 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:00,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:00,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:00,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:00,867 INFO L124 PetriNetUnfolderBase]: 895/1702 cut-off events. [2024-11-16 19:26:00,868 INFO L125 PetriNetUnfolderBase]: For 51632/51632 co-relation queries the response was YES. [2024-11-16 19:26:00,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13292 conditions, 1702 events. 895/1702 cut-off events. For 51632/51632 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10139 event pairs, 68 based on Foata normal form. 14/1706 useless extension candidates. Maximal degree in co-relation 13220. Up to 431 conditions per place. [2024-11-16 19:26:00,881 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 138 selfloop transitions, 250 changer transitions 0/391 dead transitions. [2024-11-16 19:26:00,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 391 transitions, 6992 flow [2024-11-16 19:26:00,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:26:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:26:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 189 transitions. [2024-11-16 19:26:00,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-11-16 19:26:00,883 INFO L175 Difference]: Start difference. First operand has 188 places, 301 transitions, 4805 flow. Second operand 17 states and 189 transitions. [2024-11-16 19:26:00,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 391 transitions, 6992 flow [2024-11-16 19:26:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 391 transitions, 6700 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:00,974 INFO L231 Difference]: Finished difference. Result has 204 places, 348 transitions, 6209 flow [2024-11-16 19:26:00,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4533, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6209, PETRI_PLACES=204, PETRI_TRANSITIONS=348} [2024-11-16 19:26:00,975 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 180 predicate places. [2024-11-16 19:26:00,975 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 348 transitions, 6209 flow [2024-11-16 19:26:00,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:00,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:00,975 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:00,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-16 19:26:01,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 19:26:01,176 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:01,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1515230590, now seen corresponding path program 13 times [2024-11-16 19:26:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141909601] [2024-11-16 19:26:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:01,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:01,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141909601] [2024-11-16 19:26:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141909601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230909558] [2024-11-16 19:26:01,238 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:01,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:01,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:01,240 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:01,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 19:26:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:01,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:01,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:01,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:01,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230909558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:01,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 19:26:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121626625] [2024-11-16 19:26:01,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:01,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:26:01,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:26:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:01,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:01,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 348 transitions, 6209 flow. Second operand has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-11-16 19:26:01,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:01,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:01,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:01,836 INFO L124 PetriNetUnfolderBase]: 987/1876 cut-off events. [2024-11-16 19:26:01,836 INFO L125 PetriNetUnfolderBase]: For 72172/72175 co-relation queries the response was YES. [2024-11-16 19:26:01,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 1876 events. 987/1876 cut-off events. For 72172/72175 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11426 event pairs, 89 based on Foata normal form. 16/1887 useless extension candidates. Maximal degree in co-relation 16312. Up to 542 conditions per place. [2024-11-16 19:26:01,850 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 166 selfloop transitions, 256 changer transitions 22/447 dead transitions. [2024-11-16 19:26:01,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 447 transitions, 8938 flow [2024-11-16 19:26:01,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 19:26:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-16 19:26:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 245 transitions. [2024-11-16 19:26:01,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-11-16 19:26:01,852 INFO L175 Difference]: Start difference. First operand has 204 places, 348 transitions, 6209 flow. Second operand 25 states and 245 transitions. [2024-11-16 19:26:01,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 447 transitions, 8938 flow [2024-11-16 19:26:01,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 447 transitions, 8488 flow, removed 205 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:01,983 INFO L231 Difference]: Finished difference. Result has 238 places, 385 transitions, 7506 flow [2024-11-16 19:26:01,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5911, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7506, PETRI_PLACES=238, PETRI_TRANSITIONS=385} [2024-11-16 19:26:01,983 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 214 predicate places. [2024-11-16 19:26:01,984 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 385 transitions, 7506 flow [2024-11-16 19:26:01,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.8) internal successors, (102), 15 states have internal predecessors, (102), 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) [2024-11-16 19:26:01,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:01,984 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:01,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:02,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:02,184 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:02,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 860038060, now seen corresponding path program 14 times [2024-11-16 19:26:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629674753] [2024-11-16 19:26:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:02,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:02,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629674753] [2024-11-16 19:26:02,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629674753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:02,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048838580] [2024-11-16 19:26:02,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:02,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:02,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:02,233 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:02,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 19:26:02,281 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:02,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:02,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:02,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:02,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048838580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:02,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:02,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:02,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802272782] [2024-11-16 19:26:02,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:02,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:02,356 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 385 transitions, 7506 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:02,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:02,838 INFO L124 PetriNetUnfolderBase]: 1185/2181 cut-off events. [2024-11-16 19:26:02,838 INFO L125 PetriNetUnfolderBase]: For 113184/113184 co-relation queries the response was YES. [2024-11-16 19:26:02,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21494 conditions, 2181 events. 1185/2181 cut-off events. For 113184/113184 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13401 event pairs, 248 based on Foata normal form. 22/2196 useless extension candidates. Maximal degree in co-relation 21398. Up to 1343 conditions per place. [2024-11-16 19:26:02,859 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 359 selfloop transitions, 155 changer transitions 0/517 dead transitions. [2024-11-16 19:26:02,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 517 transitions, 11345 flow [2024-11-16 19:26:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:26:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:26:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-16 19:26:02,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-16 19:26:02,862 INFO L175 Difference]: Start difference. First operand has 238 places, 385 transitions, 7506 flow. Second operand 16 states and 173 transitions. [2024-11-16 19:26:02,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 517 transitions, 11345 flow [2024-11-16 19:26:03,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 517 transitions, 10719 flow, removed 219 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:03,134 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 9359 flow [2024-11-16 19:26:03,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=7078, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9359, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2024-11-16 19:26:03,135 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 218 predicate places. [2024-11-16 19:26:03,135 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 9359 flow [2024-11-16 19:26:03,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:03,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:03,135 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:03,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 19:26:03,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 19:26:03,336 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:03,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1921737740, now seen corresponding path program 15 times [2024-11-16 19:26:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:03,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041044598] [2024-11-16 19:26:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041044598] [2024-11-16 19:26:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041044598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:03,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539666380] [2024-11-16 19:26:03,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:03,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:03,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:03,392 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:03,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 19:26:03,443 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:26:03,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:03,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:03,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:03,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539666380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:03,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 19:26:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563543821] [2024-11-16 19:26:03,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:03,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:26:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:26:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:26:03,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:03,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 9359 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:03,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:03,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:03,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:04,019 INFO L124 PetriNetUnfolderBase]: 1193/2199 cut-off events. [2024-11-16 19:26:04,019 INFO L125 PetriNetUnfolderBase]: For 119693/119693 co-relation queries the response was YES. [2024-11-16 19:26:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22268 conditions, 2199 events. 1193/2199 cut-off events. For 119693/119693 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13466 event pairs, 213 based on Foata normal form. 8/2200 useless extension candidates. Maximal degree in co-relation 22170. Up to 1214 conditions per place. [2024-11-16 19:26:04,040 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 411 selfloop transitions, 138 changer transitions 23/575 dead transitions. [2024-11-16 19:26:04,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 575 transitions, 12652 flow [2024-11-16 19:26:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:26:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:26:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 154 transitions. [2024-11-16 19:26:04,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-11-16 19:26:04,043 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 9359 flow. Second operand 15 states and 154 transitions. [2024-11-16 19:26:04,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 575 transitions, 12652 flow [2024-11-16 19:26:04,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 575 transitions, 11979 flow, removed 186 selfloop flow, removed 10 redundant places. [2024-11-16 19:26:04,267 INFO L231 Difference]: Finished difference. Result has 252 places, 490 transitions, 9839 flow [2024-11-16 19:26:04,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8856, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9839, PETRI_PLACES=252, PETRI_TRANSITIONS=490} [2024-11-16 19:26:04,268 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 228 predicate places. [2024-11-16 19:26:04,268 INFO L471 AbstractCegarLoop]: Abstraction has has 252 places, 490 transitions, 9839 flow [2024-11-16 19:26:04,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:04,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:04,268 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:04,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:04,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:04,469 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:04,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash 126545514, now seen corresponding path program 16 times [2024-11-16 19:26:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212156738] [2024-11-16 19:26:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:04,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:04,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212156738] [2024-11-16 19:26:04,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212156738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:04,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795861593] [2024-11-16 19:26:04,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:04,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:04,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:04,537 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:04,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 19:26:04,590 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:04,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:04,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:04,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795861593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:04,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:26:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713360626] [2024-11-16 19:26:04,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:04,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:04,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:04,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 490 transitions, 9839 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-16 19:26:04,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:04,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:04,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:05,337 INFO L124 PetriNetUnfolderBase]: 1231/2283 cut-off events. [2024-11-16 19:26:05,337 INFO L125 PetriNetUnfolderBase]: For 125994/125994 co-relation queries the response was YES. [2024-11-16 19:26:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23022 conditions, 2283 events. 1231/2283 cut-off events. For 125994/125994 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14298 event pairs, 218 based on Foata normal form. 17/2293 useless extension candidates. Maximal degree in co-relation 22920. Up to 1292 conditions per place. [2024-11-16 19:26:05,356 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 402 selfloop transitions, 174 changer transitions 14/593 dead transitions. [2024-11-16 19:26:05,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 593 transitions, 12905 flow [2024-11-16 19:26:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:26:05,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:26:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 213 transitions. [2024-11-16 19:26:05,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-11-16 19:26:05,357 INFO L175 Difference]: Start difference. First operand has 252 places, 490 transitions, 9839 flow. Second operand 22 states and 213 transitions. [2024-11-16 19:26:05,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 593 transitions, 12905 flow [2024-11-16 19:26:05,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 593 transitions, 12001 flow, removed 352 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:05,659 INFO L231 Difference]: Finished difference. Result has 269 places, 514 transitions, 10344 flow [2024-11-16 19:26:05,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9254, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=10344, PETRI_PLACES=269, PETRI_TRANSITIONS=514} [2024-11-16 19:26:05,660 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 245 predicate places. [2024-11-16 19:26:05,660 INFO L471 AbstractCegarLoop]: Abstraction has has 269 places, 514 transitions, 10344 flow [2024-11-16 19:26:05,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-16 19:26:05,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:05,660 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:05,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:05,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:05,861 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:05,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash 839084516, now seen corresponding path program 17 times [2024-11-16 19:26:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:05,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43926502] [2024-11-16 19:26:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:05,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:05,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:05,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43926502] [2024-11-16 19:26:05,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43926502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:05,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390314609] [2024-11-16 19:26:05,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:05,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:05,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:05,907 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:05,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 19:26:05,955 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:26:05,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:05,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:05,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:05,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:06,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390314609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:06,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:06,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:06,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959014026] [2024-11-16 19:26:06,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:06,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:06,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:06,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:06,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:06,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 514 transitions, 10344 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:06,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:06,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:06,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:06,576 INFO L124 PetriNetUnfolderBase]: 1172/2176 cut-off events. [2024-11-16 19:26:06,576 INFO L125 PetriNetUnfolderBase]: For 90533/90533 co-relation queries the response was YES. [2024-11-16 19:26:06,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20758 conditions, 2176 events. 1172/2176 cut-off events. For 90533/90533 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13401 event pairs, 185 based on Foata normal form. 25/2194 useless extension candidates. Maximal degree in co-relation 20655. Up to 1131 conditions per place. [2024-11-16 19:26:06,596 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 350 selfloop transitions, 213 changer transitions 5/571 dead transitions. [2024-11-16 19:26:06,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 571 transitions, 12382 flow [2024-11-16 19:26:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 19:26:06,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-16 19:26:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 197 transitions. [2024-11-16 19:26:06,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43201754385964913 [2024-11-16 19:26:06,597 INFO L175 Difference]: Start difference. First operand has 269 places, 514 transitions, 10344 flow. Second operand 19 states and 197 transitions. [2024-11-16 19:26:06,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 571 transitions, 12382 flow [2024-11-16 19:26:06,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 571 transitions, 12020 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-11-16 19:26:06,817 INFO L231 Difference]: Finished difference. Result has 276 places, 509 transitions, 10588 flow [2024-11-16 19:26:06,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9523, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10588, PETRI_PLACES=276, PETRI_TRANSITIONS=509} [2024-11-16 19:26:06,818 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 252 predicate places. [2024-11-16 19:26:06,818 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 509 transitions, 10588 flow [2024-11-16 19:26:06,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:06,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:06,818 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:06,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:07,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:07,018 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:07,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash -24412978, now seen corresponding path program 18 times [2024-11-16 19:26:07,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:07,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129955704] [2024-11-16 19:26:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:07,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129955704] [2024-11-16 19:26:07,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129955704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:07,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978763349] [2024-11-16 19:26:07,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:07,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:07,070 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:07,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 19:26:07,120 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:26:07,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:07,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:07,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978763349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:07,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184626791] [2024-11-16 19:26:07,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:07,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:07,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:07,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:07,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:07,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:07,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 509 transitions, 10588 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:07,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:07,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:07,765 INFO L124 PetriNetUnfolderBase]: 1312/2407 cut-off events. [2024-11-16 19:26:07,766 INFO L125 PetriNetUnfolderBase]: For 118177/118177 co-relation queries the response was YES. [2024-11-16 19:26:07,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23736 conditions, 2407 events. 1312/2407 cut-off events. For 118177/118177 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15079 event pairs, 327 based on Foata normal form. 16/2410 useless extension candidates. Maximal degree in co-relation 23632. Up to 1832 conditions per place. [2024-11-16 19:26:07,789 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 495 selfloop transitions, 99 changer transitions 3/600 dead transitions. [2024-11-16 19:26:07,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 600 transitions, 13632 flow [2024-11-16 19:26:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:26:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:26:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 172 transitions. [2024-11-16 19:26:07,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-16 19:26:07,790 INFO L175 Difference]: Start difference. First operand has 276 places, 509 transitions, 10588 flow. Second operand 16 states and 172 transitions. [2024-11-16 19:26:07,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 600 transitions, 13632 flow [2024-11-16 19:26:08,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 600 transitions, 12995 flow, removed 181 selfloop flow, removed 14 redundant places. [2024-11-16 19:26:08,114 INFO L231 Difference]: Finished difference. Result has 284 places, 559 transitions, 11516 flow [2024-11-16 19:26:08,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10000, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11516, PETRI_PLACES=284, PETRI_TRANSITIONS=559} [2024-11-16 19:26:08,114 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 260 predicate places. [2024-11-16 19:26:08,114 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 559 transitions, 11516 flow [2024-11-16 19:26:08,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:08,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,115 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:08,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:08,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:08,315 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:08,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1062563734, now seen corresponding path program 19 times [2024-11-16 19:26:08,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908058564] [2024-11-16 19:26:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908058564] [2024-11-16 19:26:08,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908058564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:08,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243409695] [2024-11-16 19:26:08,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:08,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:08,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:08,367 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:08,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 19:26:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:08,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:08,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:08,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243409695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:08,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:08,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091006307] [2024-11-16 19:26:08,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:08,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:08,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:08,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 559 transitions, 11516 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-16 19:26:08,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:08,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:08,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:09,196 INFO L124 PetriNetUnfolderBase]: 1305/2417 cut-off events. [2024-11-16 19:26:09,196 INFO L125 PetriNetUnfolderBase]: For 96397/96397 co-relation queries the response was YES. [2024-11-16 19:26:09,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22958 conditions, 2417 events. 1305/2417 cut-off events. For 96397/96397 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 15260 event pairs, 194 based on Foata normal form. 12/2424 useless extension candidates. Maximal degree in co-relation 22846. Up to 1245 conditions per place. [2024-11-16 19:26:09,225 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 331 selfloop transitions, 287 changer transitions 9/630 dead transitions. [2024-11-16 19:26:09,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 630 transitions, 14237 flow [2024-11-16 19:26:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:26:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:26:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 176 transitions. [2024-11-16 19:26:09,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-11-16 19:26:09,227 INFO L175 Difference]: Start difference. First operand has 284 places, 559 transitions, 11516 flow. Second operand 17 states and 176 transitions. [2024-11-16 19:26:09,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 630 transitions, 14237 flow [2024-11-16 19:26:09,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 630 transitions, 13761 flow, removed 214 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:09,566 INFO L231 Difference]: Finished difference. Result has 299 places, 571 transitions, 12196 flow [2024-11-16 19:26:09,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11003, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12196, PETRI_PLACES=299, PETRI_TRANSITIONS=571} [2024-11-16 19:26:09,567 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 275 predicate places. [2024-11-16 19:26:09,567 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 571 transitions, 12196 flow [2024-11-16 19:26:09,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-16 19:26:09,567 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:09,567 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:09,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:09,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-16 19:26:09,768 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:09,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 306844290, now seen corresponding path program 20 times [2024-11-16 19:26:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942724168] [2024-11-16 19:26:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:09,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942724168] [2024-11-16 19:26:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942724168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:09,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756449862] [2024-11-16 19:26:09,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:09,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:09,820 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:09,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 19:26:09,871 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:09,871 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:09,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:09,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756449862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:09,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 19:26:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694651701] [2024-11-16 19:26:09,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:09,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:26:09,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:26:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:09,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:09,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 571 transitions, 12196 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-11-16 19:26:09,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:09,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:09,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:10,598 INFO L124 PetriNetUnfolderBase]: 1367/2511 cut-off events. [2024-11-16 19:26:10,599 INFO L125 PetriNetUnfolderBase]: For 109756/109760 co-relation queries the response was YES. [2024-11-16 19:26:10,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24998 conditions, 2511 events. 1367/2511 cut-off events. For 109756/109760 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 15893 event pairs, 204 based on Foata normal form. 14/2508 useless extension candidates. Maximal degree in co-relation 24881. Up to 1293 conditions per place. [2024-11-16 19:26:10,627 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 349 selfloop transitions, 308 changer transitions 10/670 dead transitions. [2024-11-16 19:26:10,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 670 transitions, 15624 flow [2024-11-16 19:26:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:26:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:26:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 217 transitions. [2024-11-16 19:26:10,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39311594202898553 [2024-11-16 19:26:10,628 INFO L175 Difference]: Start difference. First operand has 299 places, 571 transitions, 12196 flow. Second operand 23 states and 217 transitions. [2024-11-16 19:26:10,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 670 transitions, 15624 flow [2024-11-16 19:26:11,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 670 transitions, 15143 flow, removed 210 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:11,052 INFO L231 Difference]: Finished difference. Result has 322 places, 607 transitions, 13897 flow [2024-11-16 19:26:11,052 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13897, PETRI_PLACES=322, PETRI_TRANSITIONS=607} [2024-11-16 19:26:11,053 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 298 predicate places. [2024-11-16 19:26:11,053 INFO L471 AbstractCegarLoop]: Abstraction has has 322 places, 607 transitions, 13897 flow [2024-11-16 19:26:11,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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) [2024-11-16 19:26:11,053 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:11,053 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:11,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:11,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-16 19:26:11,253 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:11,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1741095202, now seen corresponding path program 21 times [2024-11-16 19:26:11,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:11,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729621659] [2024-11-16 19:26:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:11,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729621659] [2024-11-16 19:26:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729621659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782774599] [2024-11-16 19:26:11,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:11,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:11,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:11,300 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:11,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-16 19:26:11,345 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 19:26:11,345 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:11,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:11,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782774599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:11,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:11,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:11,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146635525] [2024-11-16 19:26:11,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:11,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:11,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:11,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 607 transitions, 13897 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-11-16 19:26:11,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:11,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:11,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:12,144 INFO L124 PetriNetUnfolderBase]: 1484/2696 cut-off events. [2024-11-16 19:26:12,144 INFO L125 PetriNetUnfolderBase]: For 150256/150256 co-relation queries the response was YES. [2024-11-16 19:26:12,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28882 conditions, 2696 events. 1484/2696 cut-off events. For 150256/150256 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 17145 event pairs, 230 based on Foata normal form. 14/2699 useless extension candidates. Maximal degree in co-relation 28757. Up to 1543 conditions per place. [2024-11-16 19:26:12,171 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 428 selfloop transitions, 260 changer transitions 4/695 dead transitions. [2024-11-16 19:26:12,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 695 transitions, 17434 flow [2024-11-16 19:26:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:26:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:26:12,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 186 transitions. [2024-11-16 19:26:12,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-11-16 19:26:12,172 INFO L175 Difference]: Start difference. First operand has 322 places, 607 transitions, 13897 flow. Second operand 17 states and 186 transitions. [2024-11-16 19:26:12,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 695 transitions, 17434 flow [2024-11-16 19:26:12,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 695 transitions, 17053 flow, removed 134 selfloop flow, removed 9 redundant places. [2024-11-16 19:26:12,665 INFO L231 Difference]: Finished difference. Result has 332 places, 648 transitions, 15551 flow [2024-11-16 19:26:12,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=13516, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=15551, PETRI_PLACES=332, PETRI_TRANSITIONS=648} [2024-11-16 19:26:12,665 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 308 predicate places. [2024-11-16 19:26:12,665 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 648 transitions, 15551 flow [2024-11-16 19:26:12,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-11-16 19:26:12,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:12,666 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:12,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-16 19:26:12,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-16 19:26:12,866 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:12,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1991892356, now seen corresponding path program 22 times [2024-11-16 19:26:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026398071] [2024-11-16 19:26:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026398071] [2024-11-16 19:26:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026398071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215473026] [2024-11-16 19:26:12,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:12,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:12,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:12,925 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:12,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-16 19:26:12,975 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:12,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:12,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:12,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:13,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215473026] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:13,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:13,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:26:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830434545] [2024-11-16 19:26:13,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:13,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:13,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:13,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:13,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 648 transitions, 15551 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-16 19:26:13,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:13,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:13,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:13,955 INFO L124 PetriNetUnfolderBase]: 1500/2752 cut-off events. [2024-11-16 19:26:13,955 INFO L125 PetriNetUnfolderBase]: For 157647/157647 co-relation queries the response was YES. [2024-11-16 19:26:13,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30530 conditions, 2752 events. 1500/2752 cut-off events. For 157647/157647 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17747 event pairs, 157 based on Foata normal form. 10/2757 useless extension candidates. Maximal degree in co-relation 30398. Up to 1138 conditions per place. [2024-11-16 19:26:13,996 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 321 selfloop transitions, 392 changer transitions 16/732 dead transitions. [2024-11-16 19:26:13,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 732 transitions, 18712 flow [2024-11-16 19:26:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:26:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:26:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 207 transitions. [2024-11-16 19:26:13,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-11-16 19:26:13,997 INFO L175 Difference]: Start difference. First operand has 332 places, 648 transitions, 15551 flow. Second operand 22 states and 207 transitions. [2024-11-16 19:26:13,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 732 transitions, 18712 flow [2024-11-16 19:26:14,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 732 transitions, 18213 flow, removed 212 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:14,602 INFO L231 Difference]: Finished difference. Result has 350 places, 657 transitions, 16444 flow [2024-11-16 19:26:14,602 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=15119, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=16444, PETRI_PLACES=350, PETRI_TRANSITIONS=657} [2024-11-16 19:26:14,602 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 326 predicate places. [2024-11-16 19:26:14,602 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 657 transitions, 16444 flow [2024-11-16 19:26:14,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-11-16 19:26:14,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:14,602 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:14,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-16 19:26:14,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:14,803 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:14,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1947067556, now seen corresponding path program 23 times [2024-11-16 19:26:14,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974100330] [2024-11-16 19:26:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:14,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:14,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974100330] [2024-11-16 19:26:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974100330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214801882] [2024-11-16 19:26:14,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:14,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:14,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:14,848 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:14,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-16 19:26:14,895 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:14,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:14,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:14,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:14,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214801882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:14,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:14,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16600758] [2024-11-16 19:26:14,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:14,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:14,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:14,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:14,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 657 transitions, 16444 flow. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 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) [2024-11-16 19:26:14,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:14,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:14,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:15,661 INFO L124 PetriNetUnfolderBase]: 1474/2692 cut-off events. [2024-11-16 19:26:15,661 INFO L125 PetriNetUnfolderBase]: For 151951/151955 co-relation queries the response was YES. [2024-11-16 19:26:15,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30700 conditions, 2692 events. 1474/2692 cut-off events. For 151951/151955 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 17149 event pairs, 130 based on Foata normal form. 12/2699 useless extension candidates. Maximal degree in co-relation 30566. Up to 1014 conditions per place. [2024-11-16 19:26:15,692 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 283 selfloop transitions, 428 changer transitions 5/719 dead transitions. [2024-11-16 19:26:15,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 719 transitions, 19316 flow [2024-11-16 19:26:15,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 19:26:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-16 19:26:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 193 transitions. [2024-11-16 19:26:15,693 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-11-16 19:26:15,693 INFO L175 Difference]: Start difference. First operand has 350 places, 657 transitions, 16444 flow. Second operand 19 states and 193 transitions. [2024-11-16 19:26:15,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 719 transitions, 19316 flow [2024-11-16 19:26:16,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 719 transitions, 18681 flow, removed 63 selfloop flow, removed 13 redundant places. [2024-11-16 19:26:16,201 INFO L231 Difference]: Finished difference. Result has 352 places, 659 transitions, 17017 flow [2024-11-16 19:26:16,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=15650, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17017, PETRI_PLACES=352, PETRI_TRANSITIONS=659} [2024-11-16 19:26:16,202 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2024-11-16 19:26:16,202 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 659 transitions, 17017 flow [2024-11-16 19:26:16,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 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) [2024-11-16 19:26:16,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:16,202 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:16,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:16,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-16 19:26:16,406 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:16,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 527637938, now seen corresponding path program 24 times [2024-11-16 19:26:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168166061] [2024-11-16 19:26:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:16,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168166061] [2024-11-16 19:26:16,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168166061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:16,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982918794] [2024-11-16 19:26:16,458 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:16,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:16,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:16,460 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:16,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-16 19:26:16,505 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:26:16,505 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:16,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:16,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:16,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982918794] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:16,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:16,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 19:26:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718438561] [2024-11-16 19:26:16,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:16,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:26:16,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:26:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:26:16,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:16,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 659 transitions, 17017 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-16 19:26:16,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:16,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:16,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:17,222 INFO L124 PetriNetUnfolderBase]: 1456/2652 cut-off events. [2024-11-16 19:26:17,223 INFO L125 PetriNetUnfolderBase]: For 152870/152874 co-relation queries the response was YES. [2024-11-16 19:26:17,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30993 conditions, 2652 events. 1456/2652 cut-off events. For 152870/152874 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 16805 event pairs, 153 based on Foata normal form. 6/2635 useless extension candidates. Maximal degree in co-relation 30860. Up to 1112 conditions per place. [2024-11-16 19:26:17,252 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 350 selfloop transitions, 331 changer transitions 17/701 dead transitions. [2024-11-16 19:26:17,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 701 transitions, 19154 flow [2024-11-16 19:26:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:26:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:26:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 124 transitions. [2024-11-16 19:26:17,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-11-16 19:26:17,253 INFO L175 Difference]: Start difference. First operand has 352 places, 659 transitions, 17017 flow. Second operand 13 states and 124 transitions. [2024-11-16 19:26:17,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 701 transitions, 19154 flow [2024-11-16 19:26:17,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 701 transitions, 18669 flow, removed 82 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:17,745 INFO L231 Difference]: Finished difference. Result has 351 places, 646 transitions, 17046 flow [2024-11-16 19:26:17,746 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16373, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17046, PETRI_PLACES=351, PETRI_TRANSITIONS=646} [2024-11-16 19:26:17,746 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 327 predicate places. [2024-11-16 19:26:17,746 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 646 transitions, 17046 flow [2024-11-16 19:26:17,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-16 19:26:17,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:17,746 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:17,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:17,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-16 19:26:17,948 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:17,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:17,948 INFO L85 PathProgramCache]: Analyzing trace with hash 172557626, now seen corresponding path program 25 times [2024-11-16 19:26:17,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:17,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908277027] [2024-11-16 19:26:17,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:17,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:18,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908277027] [2024-11-16 19:26:18,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908277027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:18,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147068354] [2024-11-16 19:26:18,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:18,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:18,007 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:18,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-16 19:26:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:18,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:18,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:18,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:18,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147068354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:18,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:18,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 19:26:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124990814] [2024-11-16 19:26:18,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:18,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:26:18,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:26:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:18,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:18,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 646 transitions, 17046 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:18,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:18,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:18,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:19,051 INFO L124 PetriNetUnfolderBase]: 1645/2990 cut-off events. [2024-11-16 19:26:19,051 INFO L125 PetriNetUnfolderBase]: For 192757/192757 co-relation queries the response was YES. [2024-11-16 19:26:19,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36054 conditions, 2990 events. 1645/2990 cut-off events. For 192757/192757 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19336 event pairs, 59 based on Foata normal form. 56/3041 useless extension candidates. Maximal degree in co-relation 35919. Up to 1829 conditions per place. [2024-11-16 19:26:19,084 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 549 selfloop transitions, 236 changer transitions 0/788 dead transitions. [2024-11-16 19:26:19,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 788 transitions, 22158 flow [2024-11-16 19:26:19,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 19:26:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-16 19:26:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2024-11-16 19:26:19,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4221014492753623 [2024-11-16 19:26:19,085 INFO L175 Difference]: Start difference. First operand has 351 places, 646 transitions, 17046 flow. Second operand 23 states and 233 transitions. [2024-11-16 19:26:19,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 788 transitions, 22158 flow [2024-11-16 19:26:19,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 788 transitions, 21226 flow, removed 68 selfloop flow, removed 13 redundant places. [2024-11-16 19:26:19,671 INFO L231 Difference]: Finished difference. Result has 363 places, 738 transitions, 19583 flow [2024-11-16 19:26:19,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16058, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=19583, PETRI_PLACES=363, PETRI_TRANSITIONS=738} [2024-11-16 19:26:19,672 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 339 predicate places. [2024-11-16 19:26:19,672 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 738 transitions, 19583 flow [2024-11-16 19:26:19,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:19,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:19,672 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:19,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-16 19:26:19,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-16 19:26:19,872 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:19,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1545421718, now seen corresponding path program 26 times [2024-11-16 19:26:19,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:19,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111572615] [2024-11-16 19:26:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:19,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111572615] [2024-11-16 19:26:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111572615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24720289] [2024-11-16 19:26:19,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:19,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:19,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:19,921 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:19,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-16 19:26:19,965 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:19,965 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:19,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:19,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:20,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:20,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24720289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:20,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:20,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:20,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438296634] [2024-11-16 19:26:20,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:20,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:20,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:20,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:20,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 738 transitions, 19583 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:20,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:20,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:20,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:21,081 INFO L124 PetriNetUnfolderBase]: 1917/3432 cut-off events. [2024-11-16 19:26:21,081 INFO L125 PetriNetUnfolderBase]: For 241815/241815 co-relation queries the response was YES. [2024-11-16 19:26:21,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42818 conditions, 3432 events. 1917/3432 cut-off events. For 241815/241815 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 22527 event pairs, 68 based on Foata normal form. 16/3443 useless extension candidates. Maximal degree in co-relation 42677. Up to 1798 conditions per place. [2024-11-16 19:26:21,135 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 533 selfloop transitions, 360 changer transitions 0/896 dead transitions. [2024-11-16 19:26:21,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 896 transitions, 25832 flow [2024-11-16 19:26:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:26:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:26:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 187 transitions. [2024-11-16 19:26:21,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-16 19:26:21,137 INFO L175 Difference]: Start difference. First operand has 363 places, 738 transitions, 19583 flow. Second operand 17 states and 187 transitions. [2024-11-16 19:26:21,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 896 transitions, 25832 flow [2024-11-16 19:26:21,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 896 transitions, 24641 flow, removed 493 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:22,000 INFO L231 Difference]: Finished difference. Result has 378 places, 843 transitions, 22813 flow [2024-11-16 19:26:22,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=18473, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22813, PETRI_PLACES=378, PETRI_TRANSITIONS=843} [2024-11-16 19:26:22,001 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 354 predicate places. [2024-11-16 19:26:22,001 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 843 transitions, 22813 flow [2024-11-16 19:26:22,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2024-11-16 19:26:22,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:22,001 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:22,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-16 19:26:22,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:22,201 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:22,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 490838854, now seen corresponding path program 27 times [2024-11-16 19:26:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757676978] [2024-11-16 19:26:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:22,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:22,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757676978] [2024-11-16 19:26:22,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757676978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:22,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828370038] [2024-11-16 19:26:22,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:22,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:22,243 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:22,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-16 19:26:22,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 19:26:22,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:22,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:22,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:22,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:22,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:22,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828370038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:22,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:22,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:22,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863833246] [2024-11-16 19:26:22,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:22,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:22,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:22,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 843 transitions, 22813 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-16 19:26:22,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:22,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:22,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:23,454 INFO L124 PetriNetUnfolderBase]: 1870/3364 cut-off events. [2024-11-16 19:26:23,454 INFO L125 PetriNetUnfolderBase]: For 222743/222743 co-relation queries the response was YES. [2024-11-16 19:26:23,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 3364 events. 1870/3364 cut-off events. For 222743/222743 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22052 event pairs, 56 based on Foata normal form. 17/3376 useless extension candidates. Maximal degree in co-relation 41349. Up to 1427 conditions per place. [2024-11-16 19:26:23,495 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 608 selfloop transitions, 311 changer transitions 2/924 dead transitions. [2024-11-16 19:26:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 924 transitions, 26533 flow [2024-11-16 19:26:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:26:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:26:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 216 transitions. [2024-11-16 19:26:23,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-11-16 19:26:23,496 INFO L175 Difference]: Start difference. First operand has 378 places, 843 transitions, 22813 flow. Second operand 22 states and 216 transitions. [2024-11-16 19:26:23,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 924 transitions, 26533 flow [2024-11-16 19:26:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 924 transitions, 25720 flow, removed 290 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:24,280 INFO L231 Difference]: Finished difference. Result has 394 places, 841 transitions, 22775 flow [2024-11-16 19:26:24,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21124, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=22775, PETRI_PLACES=394, PETRI_TRANSITIONS=841} [2024-11-16 19:26:24,281 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 370 predicate places. [2024-11-16 19:26:24,281 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 841 transitions, 22775 flow [2024-11-16 19:26:24,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2024-11-16 19:26:24,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:24,281 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:24,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:24,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-16 19:26:24,482 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:24,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2121841230, now seen corresponding path program 28 times [2024-11-16 19:26:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:24,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049137007] [2024-11-16 19:26:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:24,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049137007] [2024-11-16 19:26:24,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049137007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338331589] [2024-11-16 19:26:24,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:24,530 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:24,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-16 19:26:24,574 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:24,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:24,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:24,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:24,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:24,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338331589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:24,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-16 19:26:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442733667] [2024-11-16 19:26:24,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:24,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:24,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:24,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:24,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 841 transitions, 22775 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:24,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:24,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:24,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:25,689 INFO L124 PetriNetUnfolderBase]: 1859/3363 cut-off events. [2024-11-16 19:26:25,689 INFO L125 PetriNetUnfolderBase]: For 231716/231716 co-relation queries the response was YES. [2024-11-16 19:26:25,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41748 conditions, 3363 events. 1859/3363 cut-off events. For 231716/231716 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 22216 event pairs, 55 based on Foata normal form. 23/3381 useless extension candidates. Maximal degree in co-relation 41598. Up to 1237 conditions per place. [2024-11-16 19:26:25,733 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 549 selfloop transitions, 390 changer transitions 2/944 dead transitions. [2024-11-16 19:26:25,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 944 transitions, 27446 flow [2024-11-16 19:26:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:26:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:26:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 230 transitions. [2024-11-16 19:26:25,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-16 19:26:25,734 INFO L175 Difference]: Start difference. First operand has 394 places, 841 transitions, 22775 flow. Second operand 22 states and 230 transitions. [2024-11-16 19:26:25,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 944 transitions, 27446 flow [2024-11-16 19:26:26,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 944 transitions, 26761 flow, removed 241 selfloop flow, removed 5 redundant places. [2024-11-16 19:26:26,665 INFO L231 Difference]: Finished difference. Result has 417 places, 864 transitions, 24210 flow [2024-11-16 19:26:26,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=21848, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=361, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=24210, PETRI_PLACES=417, PETRI_TRANSITIONS=864} [2024-11-16 19:26:26,666 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 393 predicate places. [2024-11-16 19:26:26,667 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 864 transitions, 24210 flow [2024-11-16 19:26:26,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:26,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:26,667 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:26,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:26,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:26,867 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:26,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash -102764796, now seen corresponding path program 29 times [2024-11-16 19:26:26,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:26,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519536431] [2024-11-16 19:26:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:26,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:26,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:26,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519536431] [2024-11-16 19:26:26,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519536431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:26,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419580735] [2024-11-16 19:26:26,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:26,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:26,910 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:26,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-16 19:26:26,952 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:26:26,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:26,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:26,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:26,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419580735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:27,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-16 19:26:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339183311] [2024-11-16 19:26:27,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:27,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:26:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:26:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:27,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:27,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 864 transitions, 24210 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:27,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:27,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:27,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:28,205 INFO L124 PetriNetUnfolderBase]: 1943/3508 cut-off events. [2024-11-16 19:26:28,205 INFO L125 PetriNetUnfolderBase]: For 262329/262333 co-relation queries the response was YES. [2024-11-16 19:26:28,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45118 conditions, 3508 events. 1943/3508 cut-off events. For 262329/262333 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 23404 event pairs, 55 based on Foata normal form. 28/3531 useless extension candidates. Maximal degree in co-relation 44961. Up to 1260 conditions per place. [2024-11-16 19:26:28,250 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 568 selfloop transitions, 416 changer transitions 8/995 dead transitions. [2024-11-16 19:26:28,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 995 transitions, 29906 flow [2024-11-16 19:26:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 19:26:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-11-16 19:26:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 274 transitions. [2024-11-16 19:26:28,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-11-16 19:26:28,251 INFO L175 Difference]: Start difference. First operand has 417 places, 864 transitions, 24210 flow. Second operand 28 states and 274 transitions. [2024-11-16 19:26:28,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 995 transitions, 29906 flow [2024-11-16 19:26:29,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 995 transitions, 28681 flow, removed 490 selfloop flow, removed 10 redundant places. [2024-11-16 19:26:29,319 INFO L231 Difference]: Finished difference. Result has 445 places, 904 transitions, 26199 flow [2024-11-16 19:26:29,320 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23070, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=26199, PETRI_PLACES=445, PETRI_TRANSITIONS=904} [2024-11-16 19:26:29,320 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 421 predicate places. [2024-11-16 19:26:29,320 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 904 transitions, 26199 flow [2024-11-16 19:26:29,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:29,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:29,320 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:29,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:29,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-16 19:26:29,521 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1202384944, now seen corresponding path program 30 times [2024-11-16 19:26:29,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:29,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660959399] [2024-11-16 19:26:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:29,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660959399] [2024-11-16 19:26:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660959399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477699740] [2024-11-16 19:26:29,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:29,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:29,567 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:29,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-16 19:26:29,614 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:26:29,614 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:29,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:29,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:29,655 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477699740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:29,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:29,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:26:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279730922] [2024-11-16 19:26:29,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:29,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:26:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:26:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:26:29,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:29,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 904 transitions, 26199 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:29,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:29,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:29,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:30,981 INFO L124 PetriNetUnfolderBase]: 1985/3586 cut-off events. [2024-11-16 19:26:30,981 INFO L125 PetriNetUnfolderBase]: For 231340/231344 co-relation queries the response was YES. [2024-11-16 19:26:31,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45188 conditions, 3586 events. 1985/3586 cut-off events. For 231340/231344 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 24107 event pairs, 70 based on Foata normal form. 8/3589 useless extension candidates. Maximal degree in co-relation 45021. Up to 2398 conditions per place. [2024-11-16 19:26:31,043 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 717 selfloop transitions, 233 changer transitions 0/953 dead transitions. [2024-11-16 19:26:31,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 953 transitions, 28787 flow [2024-11-16 19:26:31,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:26:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:26:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 148 transitions. [2024-11-16 19:26:31,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-11-16 19:26:31,044 INFO L175 Difference]: Start difference. First operand has 445 places, 904 transitions, 26199 flow. Second operand 15 states and 148 transitions. [2024-11-16 19:26:31,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 953 transitions, 28787 flow [2024-11-16 19:26:32,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 953 transitions, 27889 flow, removed 232 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:32,251 INFO L231 Difference]: Finished difference. Result has 448 places, 929 transitions, 26354 flow [2024-11-16 19:26:32,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=24982, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=892, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=26354, PETRI_PLACES=448, PETRI_TRANSITIONS=929} [2024-11-16 19:26:32,251 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 424 predicate places. [2024-11-16 19:26:32,251 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 929 transitions, 26354 flow [2024-11-16 19:26:32,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:32,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:32,252 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:32,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-16 19:26:32,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:32,455 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:32,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1519087172, now seen corresponding path program 31 times [2024-11-16 19:26:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044617691] [2024-11-16 19:26:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044617691] [2024-11-16 19:26:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044617691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682578392] [2024-11-16 19:26:32,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:32,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:32,500 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:32,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-16 19:26:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:32,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:32,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:32,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682578392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:32,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:32,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868075005] [2024-11-16 19:26:32,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:32,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:32,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:32,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 929 transitions, 26354 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-16 19:26:32,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:32,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:32,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:33,825 INFO L124 PetriNetUnfolderBase]: 2018/3661 cut-off events. [2024-11-16 19:26:33,825 INFO L125 PetriNetUnfolderBase]: For 229477/229477 co-relation queries the response was YES. [2024-11-16 19:26:33,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45215 conditions, 3661 events. 2018/3661 cut-off events. For 229477/229477 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 24677 event pairs, 66 based on Foata normal form. 20/3676 useless extension candidates. Maximal degree in co-relation 45044. Up to 2113 conditions per place. [2024-11-16 19:26:33,873 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 641 selfloop transitions, 334 changer transitions 0/978 dead transitions. [2024-11-16 19:26:33,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 978 transitions, 29218 flow [2024-11-16 19:26:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 19:26:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-16 19:26:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2024-11-16 19:26:33,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-11-16 19:26:33,874 INFO L175 Difference]: Start difference. First operand has 448 places, 929 transitions, 26354 flow. Second operand 16 states and 171 transitions. [2024-11-16 19:26:33,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 978 transitions, 29218 flow [2024-11-16 19:26:34,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 978 transitions, 28825 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:34,899 INFO L231 Difference]: Finished difference. Result has 459 places, 944 transitions, 27335 flow [2024-11-16 19:26:34,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=25515, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=27335, PETRI_PLACES=459, PETRI_TRANSITIONS=944} [2024-11-16 19:26:34,900 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 435 predicate places. [2024-11-16 19:26:34,900 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 944 transitions, 27335 flow [2024-11-16 19:26:34,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-11-16 19:26:34,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:34,900 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-16 19:26:35,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-16 19:26:35,101 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:35,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash -367585906, now seen corresponding path program 32 times [2024-11-16 19:26:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:35,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941817383] [2024-11-16 19:26:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:35,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:35,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941817383] [2024-11-16 19:26:35,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941817383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:35,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455374869] [2024-11-16 19:26:35,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:35,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:35,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:35,145 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:35,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-16 19:26:35,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:35,189 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:35,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:35,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455374869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:35,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-16 19:26:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601585459] [2024-11-16 19:26:35,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:35,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:26:35,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:35,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:26:35,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:26:35,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:35,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 944 transitions, 27335 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-16 19:26:35,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:35,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:35,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:36,532 INFO L124 PetriNetUnfolderBase]: 2072/3781 cut-off events. [2024-11-16 19:26:36,532 INFO L125 PetriNetUnfolderBase]: For 237480/237480 co-relation queries the response was YES. [2024-11-16 19:26:36,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46966 conditions, 3781 events. 2072/3781 cut-off events. For 237480/237480 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 25789 event pairs, 35 based on Foata normal form. 8/3784 useless extension candidates. Maximal degree in co-relation 46792. Up to 2084 conditions per place. [2024-11-16 19:26:36,583 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 660 selfloop transitions, 338 changer transitions 1/1002 dead transitions. [2024-11-16 19:26:36,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1002 transitions, 30581 flow [2024-11-16 19:26:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-11-16 19:26:36,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-11-16 19:26:36,584 INFO L175 Difference]: Start difference. First operand has 459 places, 944 transitions, 27335 flow. Second operand 10 states and 108 transitions. [2024-11-16 19:26:36,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1002 transitions, 30581 flow [2024-11-16 19:26:37,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 1002 transitions, 30110 flow, removed 26 selfloop flow, removed 16 redundant places. [2024-11-16 19:26:37,690 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 28289 flow [2024-11-16 19:26:37,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26401, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=926, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28289, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2024-11-16 19:26:37,691 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 428 predicate places. [2024-11-16 19:26:37,691 INFO L471 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 28289 flow [2024-11-16 19:26:37,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-16 19:26:37,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:37,691 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:37,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:37,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-16 19:26:37,892 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:37,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash -644415010, now seen corresponding path program 33 times [2024-11-16 19:26:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481455059] [2024-11-16 19:26:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:37,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:37,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481455059] [2024-11-16 19:26:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481455059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282342723] [2024-11-16 19:26:37,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:37,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:37,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:37,932 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:37,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-16 19:26:37,976 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 19:26:37,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:37,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:26:37,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:38,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282342723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:38,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:38,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-16 19:26:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293065236] [2024-11-16 19:26:38,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:38,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 19:26:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 19:26:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 19:26:38,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-16 19:26:38,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 28289 flow. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:38,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:38,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-16 19:26:38,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:39,258 INFO L124 PetriNetUnfolderBase]: 2039/3712 cut-off events. [2024-11-16 19:26:39,258 INFO L125 PetriNetUnfolderBase]: For 237645/237645 co-relation queries the response was YES. [2024-11-16 19:26:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46310 conditions, 3712 events. 2039/3712 cut-off events. For 237645/237645 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 25160 event pairs, 75 based on Foata normal form. 12/3720 useless extension candidates. Maximal degree in co-relation 46138. Up to 1382 conditions per place. [2024-11-16 19:26:39,314 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 613 selfloop transitions, 406 changer transitions 5/1027 dead transitions. [2024-11-16 19:26:39,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1027 transitions, 31550 flow [2024-11-16 19:26:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 19:26:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-16 19:26:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 194 transitions. [2024-11-16 19:26:39,315 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-11-16 19:26:39,315 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 28289 flow. Second operand 20 states and 194 transitions. [2024-11-16 19:26:39,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1027 transitions, 31550 flow [2024-11-16 19:26:40,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1027 transitions, 30800 flow, removed 33 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:40,411 INFO L231 Difference]: Finished difference. Result has 459 places, 953 transitions, 28072 flow [2024-11-16 19:26:40,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=26885, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=400, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=28072, PETRI_PLACES=459, PETRI_TRANSITIONS=953} [2024-11-16 19:26:40,412 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 435 predicate places. [2024-11-16 19:26:40,412 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 953 transitions, 28072 flow [2024-11-16 19:26:40,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2024-11-16 19:26:40,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:40,412 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:40,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:40,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-16 19:26:40,613 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:40,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:40,613 INFO L85 PathProgramCache]: Analyzing trace with hash -701991957, now seen corresponding path program 34 times [2024-11-16 19:26:40,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:40,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479985687] [2024-11-16 19:26:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:40,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479985687] [2024-11-16 19:26:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479985687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598841173] [2024-11-16 19:26:40,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:40,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:40,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:40,747 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:40,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-16 19:26:40,792 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:40,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:40,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:26:40,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:40,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598841173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:41,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-16 19:26:41,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276872497] [2024-11-16 19:26:41,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:41,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:26:41,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:26:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:26:41,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:26:41,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 953 transitions, 28072 flow. Second operand has 18 states, 18 states have (on average 9.166666666666666) internal successors, (165), 18 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) [2024-11-16 19:26:41,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:41,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:26:41,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:42,559 INFO L124 PetriNetUnfolderBase]: 2023/4052 cut-off events. [2024-11-16 19:26:42,559 INFO L125 PetriNetUnfolderBase]: For 310405/310443 co-relation queries the response was YES. [2024-11-16 19:26:42,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53423 conditions, 4052 events. 2023/4052 cut-off events. For 310405/310443 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 31171 event pairs, 49 based on Foata normal form. 6/4054 useless extension candidates. Maximal degree in co-relation 53253. Up to 2202 conditions per place. [2024-11-16 19:26:42,636 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 847 selfloop transitions, 152 changer transitions 23/1143 dead transitions. [2024-11-16 19:26:42,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1143 transitions, 34885 flow [2024-11-16 19:26:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-11-16 19:26:42,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-16 19:26:42,637 INFO L175 Difference]: Start difference. First operand has 459 places, 953 transitions, 28072 flow. Second operand 11 states and 154 transitions. [2024-11-16 19:26:42,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1143 transitions, 34885 flow [2024-11-16 19:26:44,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1143 transitions, 34297 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-11-16 19:26:44,124 INFO L231 Difference]: Finished difference. Result has 460 places, 1043 transitions, 30537 flow [2024-11-16 19:26:44,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27522, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30537, PETRI_PLACES=460, PETRI_TRANSITIONS=1043} [2024-11-16 19:26:44,125 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 436 predicate places. [2024-11-16 19:26:44,125 INFO L471 AbstractCegarLoop]: Abstraction has has 460 places, 1043 transitions, 30537 flow [2024-11-16 19:26:44,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.166666666666666) internal successors, (165), 18 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) [2024-11-16 19:26:44,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:44,126 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:44,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-16 19:26:44,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-16 19:26:44,326 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:44,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2104647813, now seen corresponding path program 35 times [2024-11-16 19:26:44,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:44,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911256825] [2024-11-16 19:26:44,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:44,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:44,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:44,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911256825] [2024-11-16 19:26:44,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911256825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:44,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621038664] [2024-11-16 19:26:44,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:44,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:44,499 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:44,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-16 19:26:44,550 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-16 19:26:44,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:44,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:26:44,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:44,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:44,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621038664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:44,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-16 19:26:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595901300] [2024-11-16 19:26:44,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:44,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 19:26:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 19:26:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:26:44,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:26:44,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1043 transitions, 30537 flow. Second operand has 20 states, 20 states have (on average 9.15) internal successors, (183), 20 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:44,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:44,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:26:44,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:46,417 INFO L124 PetriNetUnfolderBase]: 1998/4048 cut-off events. [2024-11-16 19:26:46,417 INFO L125 PetriNetUnfolderBase]: For 318295/318333 co-relation queries the response was YES. [2024-11-16 19:26:46,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53477 conditions, 4048 events. 1998/4048 cut-off events. For 318295/318333 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 31509 event pairs, 50 based on Foata normal form. 4/4048 useless extension candidates. Maximal degree in co-relation 53298. Up to 2208 conditions per place. [2024-11-16 19:26:46,477 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 835 selfloop transitions, 166 changer transitions 8/1130 dead transitions. [2024-11-16 19:26:46,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1130 transitions, 34443 flow [2024-11-16 19:26:46,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-11-16 19:26:46,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-16 19:26:46,478 INFO L175 Difference]: Start difference. First operand has 460 places, 1043 transitions, 30537 flow. Second operand 11 states and 154 transitions. [2024-11-16 19:26:46,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1130 transitions, 34443 flow [2024-11-16 19:26:47,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1130 transitions, 34222 flow, removed 106 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:47,909 INFO L231 Difference]: Finished difference. Result has 471 places, 1056 transitions, 31282 flow [2024-11-16 19:26:47,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=30338, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=31282, PETRI_PLACES=471, PETRI_TRANSITIONS=1056} [2024-11-16 19:26:47,910 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 447 predicate places. [2024-11-16 19:26:47,910 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 1056 transitions, 31282 flow [2024-11-16 19:26:47,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.15) internal successors, (183), 20 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:47,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:47,910 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:47,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:48,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-16 19:26:48,114 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:48,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2011986219, now seen corresponding path program 36 times [2024-11-16 19:26:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746502458] [2024-11-16 19:26:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:48,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746502458] [2024-11-16 19:26:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746502458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:48,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633514778] [2024-11-16 19:26:48,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:48,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:48,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:48,287 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:48,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-16 19:26:48,342 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:26:48,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:48,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:26:48,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:48,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:48,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633514778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:48,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:48,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-16 19:26:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786107419] [2024-11-16 19:26:48,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:48,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 19:26:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 19:26:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-16 19:26:48,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:26:48,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1056 transitions, 31282 flow. Second operand has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 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) [2024-11-16 19:26:48,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:48,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:26:48,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:50,126 INFO L124 PetriNetUnfolderBase]: 2008/4088 cut-off events. [2024-11-16 19:26:50,126 INFO L125 PetriNetUnfolderBase]: For 323772/323816 co-relation queries the response was YES. [2024-11-16 19:26:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54096 conditions, 4088 events. 2008/4088 cut-off events. For 323772/323816 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 32021 event pairs, 49 based on Foata normal form. 4/4089 useless extension candidates. Maximal degree in co-relation 53913. Up to 2442 conditions per place. [2024-11-16 19:26:50,186 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 856 selfloop transitions, 127 changer transitions 8/1112 dead transitions. [2024-11-16 19:26:50,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1112 transitions, 34102 flow [2024-11-16 19:26:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:26:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:26:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-11-16 19:26:50,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-16 19:26:50,187 INFO L175 Difference]: Start difference. First operand has 471 places, 1056 transitions, 31282 flow. Second operand 12 states and 156 transitions. [2024-11-16 19:26:50,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1112 transitions, 34102 flow [2024-11-16 19:26:51,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1112 transitions, 33855 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-16 19:26:51,656 INFO L231 Difference]: Finished difference. Result has 481 places, 1072 transitions, 31907 flow [2024-11-16 19:26:51,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31048, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=930, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=31907, PETRI_PLACES=481, PETRI_TRANSITIONS=1072} [2024-11-16 19:26:51,657 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 457 predicate places. [2024-11-16 19:26:51,657 INFO L471 AbstractCegarLoop]: Abstraction has has 481 places, 1072 transitions, 31907 flow [2024-11-16 19:26:51,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.3125) internal successors, (149), 16 states have internal predecessors, (149), 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) [2024-11-16 19:26:51,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:51,657 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:51,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:51,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:51,858 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:51,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:51,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1643965795, now seen corresponding path program 37 times [2024-11-16 19:26:51,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:51,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514172352] [2024-11-16 19:26:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:52,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:52,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514172352] [2024-11-16 19:26:52,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514172352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:52,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864187587] [2024-11-16 19:26:52,015 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:52,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:52,016 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:52,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-16 19:26:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:52,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:26:52,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:52,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864187587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:52,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-16 19:26:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31754240] [2024-11-16 19:26:52,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:52,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:26:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:26:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:26:52,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:26:52,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1072 transitions, 31907 flow. Second operand has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:52,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:52,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:26:52,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:53,891 INFO L124 PetriNetUnfolderBase]: 2004/4074 cut-off events. [2024-11-16 19:26:53,891 INFO L125 PetriNetUnfolderBase]: For 324657/324701 co-relation queries the response was YES. [2024-11-16 19:26:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54188 conditions, 4074 events. 2004/4074 cut-off events. For 324657/324701 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 31854 event pairs, 48 based on Foata normal form. 7/4078 useless extension candidates. Maximal degree in co-relation 54001. Up to 2317 conditions per place. [2024-11-16 19:26:53,952 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 836 selfloop transitions, 167 changer transitions 4/1128 dead transitions. [2024-11-16 19:26:53,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1128 transitions, 34939 flow [2024-11-16 19:26:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-11-16 19:26:53,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-11-16 19:26:53,953 INFO L175 Difference]: Start difference. First operand has 481 places, 1072 transitions, 31907 flow. Second operand 11 states and 147 transitions. [2024-11-16 19:26:53,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1128 transitions, 34939 flow [2024-11-16 19:26:55,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1128 transitions, 34700 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:55,483 INFO L231 Difference]: Finished difference. Result has 484 places, 1084 transitions, 32492 flow [2024-11-16 19:26:55,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=31682, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=905, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=32492, PETRI_PLACES=484, PETRI_TRANSITIONS=1084} [2024-11-16 19:26:55,484 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 460 predicate places. [2024-11-16 19:26:55,484 INFO L471 AbstractCegarLoop]: Abstraction has has 484 places, 1084 transitions, 32492 flow [2024-11-16 19:26:55,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.277777777777779) internal successors, (167), 18 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:55,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:55,484 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:55,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:55,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-16 19:26:55,688 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:55,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1229024525, now seen corresponding path program 38 times [2024-11-16 19:26:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:55,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503034101] [2024-11-16 19:26:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:55,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503034101] [2024-11-16 19:26:55,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503034101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:55,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881723] [2024-11-16 19:26:55,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:55,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:55,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:55,841 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:55,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-16 19:26:55,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:55,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:55,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:26:55,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:56,001 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:26:56,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:26:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-16 19:26:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759609633] [2024-11-16 19:26:56,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:26:56,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:26:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:56,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:26:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:26:56,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:26:56,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1084 transitions, 32492 flow. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 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) [2024-11-16 19:26:56,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:56,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:26:56,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:57,872 INFO L124 PetriNetUnfolderBase]: 2137/4338 cut-off events. [2024-11-16 19:26:57,872 INFO L125 PetriNetUnfolderBase]: For 352545/352589 co-relation queries the response was YES. [2024-11-16 19:26:57,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58293 conditions, 4338 events. 2137/4338 cut-off events. For 352545/352589 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 34213 event pairs, 62 based on Foata normal form. 3/4337 useless extension candidates. Maximal degree in co-relation 58107. Up to 2595 conditions per place. [2024-11-16 19:26:57,958 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 922 selfloop transitions, 132 changer transitions 4/1179 dead transitions. [2024-11-16 19:26:57,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1179 transitions, 36873 flow [2024-11-16 19:26:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:26:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:26:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-11-16 19:26:57,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-16 19:26:57,959 INFO L175 Difference]: Start difference. First operand has 484 places, 1084 transitions, 32492 flow. Second operand 9 states and 125 transitions. [2024-11-16 19:26:57,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1179 transitions, 36873 flow [2024-11-16 19:26:59,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1179 transitions, 36491 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:59,717 INFO L231 Difference]: Finished difference. Result has 484 places, 1134 transitions, 34119 flow [2024-11-16 19:26:59,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=32116, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=953, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34119, PETRI_PLACES=484, PETRI_TRANSITIONS=1134} [2024-11-16 19:26:59,718 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 460 predicate places. [2024-11-16 19:26:59,718 INFO L471 AbstractCegarLoop]: Abstraction has has 484 places, 1134 transitions, 34119 flow [2024-11-16 19:26:59,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 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) [2024-11-16 19:26:59,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:59,718 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:59,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-16 19:26:59,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:59,919 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:59,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash 153229913, now seen corresponding path program 39 times [2024-11-16 19:26:59,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:59,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020909758] [2024-11-16 19:26:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:00,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:00,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020909758] [2024-11-16 19:27:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020909758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842815823] [2024-11-16 19:27:00,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:27:00,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:00,062 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:00,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-16 19:27:00,113 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 19:27:00,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:00,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:00,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:00,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842815823] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:00,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-16 19:27:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160920528] [2024-11-16 19:27:00,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:00,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:27:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:27:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:27:00,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:00,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1134 transitions, 34119 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-16 19:27:00,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:00,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:00,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:01,981 INFO L124 PetriNetUnfolderBase]: 2137/4344 cut-off events. [2024-11-16 19:27:01,981 INFO L125 PetriNetUnfolderBase]: For 353983/354049 co-relation queries the response was YES. [2024-11-16 19:27:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58535 conditions, 4344 events. 2137/4344 cut-off events. For 353983/354049 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 34390 event pairs, 65 based on Foata normal form. 7/4348 useless extension candidates. Maximal degree in co-relation 58349. Up to 2599 conditions per place. [2024-11-16 19:27:02,044 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 933 selfloop transitions, 119 changer transitions 6/1179 dead transitions. [2024-11-16 19:27:02,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1179 transitions, 37020 flow [2024-11-16 19:27:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:27:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:27:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-11-16 19:27:02,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-16 19:27:02,044 INFO L175 Difference]: Start difference. First operand has 484 places, 1134 transitions, 34119 flow. Second operand 9 states and 124 transitions. [2024-11-16 19:27:02,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1179 transitions, 37020 flow [2024-11-16 19:27:03,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1179 transitions, 36788 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-11-16 19:27:03,697 INFO L231 Difference]: Finished difference. Result has 490 places, 1142 transitions, 34449 flow [2024-11-16 19:27:03,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=33907, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1016, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34449, PETRI_PLACES=490, PETRI_TRANSITIONS=1142} [2024-11-16 19:27:03,697 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 466 predicate places. [2024-11-16 19:27:03,697 INFO L471 AbstractCegarLoop]: Abstraction has has 490 places, 1142 transitions, 34449 flow [2024-11-16 19:27:03,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-16 19:27:03,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:03,698 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:03,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:03,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-16 19:27:03,898 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:03,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash -709895457, now seen corresponding path program 40 times [2024-11-16 19:27:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920737713] [2024-11-16 19:27:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:04,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920737713] [2024-11-16 19:27:04,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920737713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919836952] [2024-11-16 19:27:04,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:27:04,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:04,049 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:04,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-16 19:27:04,102 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:27:04,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:04,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:04,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:04,206 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919836952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:04,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2024-11-16 19:27:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472585226] [2024-11-16 19:27:04,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:04,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 19:27:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 19:27:04,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-16 19:27:04,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:04,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 1142 transitions, 34449 flow. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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) [2024-11-16 19:27:04,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:04,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:04,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:05,923 INFO L124 PetriNetUnfolderBase]: 2129/4326 cut-off events. [2024-11-16 19:27:05,923 INFO L125 PetriNetUnfolderBase]: For 352655/352721 co-relation queries the response was YES. [2024-11-16 19:27:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58463 conditions, 4326 events. 2129/4326 cut-off events. For 352655/352721 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 34230 event pairs, 65 based on Foata normal form. 7/4330 useless extension candidates. Maximal degree in co-relation 58274. Up to 2684 conditions per place. [2024-11-16 19:27:06,116 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 958 selfloop transitions, 91 changer transitions 4/1174 dead transitions. [2024-11-16 19:27:06,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1174 transitions, 36988 flow [2024-11-16 19:27:06,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:27:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:27:06,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-11-16 19:27:06,117 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-16 19:27:06,117 INFO L175 Difference]: Start difference. First operand has 490 places, 1142 transitions, 34449 flow. Second operand 9 states and 120 transitions. [2024-11-16 19:27:06,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1174 transitions, 36988 flow [2024-11-16 19:27:07,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1174 transitions, 36823 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-11-16 19:27:07,784 INFO L231 Difference]: Finished difference. Result has 494 places, 1146 transitions, 34657 flow [2024-11-16 19:27:07,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34288, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=34657, PETRI_PLACES=494, PETRI_TRANSITIONS=1146} [2024-11-16 19:27:07,785 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 470 predicate places. [2024-11-16 19:27:07,785 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 1146 transitions, 34657 flow [2024-11-16 19:27:07,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 16 states have internal predecessors, (153), 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) [2024-11-16 19:27:07,785 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:07,786 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:07,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-16 19:27:07,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:07,986 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:07,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -320246473, now seen corresponding path program 41 times [2024-11-16 19:27:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:07,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843961341] [2024-11-16 19:27:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:08,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:08,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843961341] [2024-11-16 19:27:08,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843961341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:08,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693010459] [2024-11-16 19:27:08,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:27:08,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:08,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:08,119 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:08,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-16 19:27:08,165 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:27:08,165 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:08,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:08,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:08,249 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693010459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:08,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-16 19:27:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473631905] [2024-11-16 19:27:08,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:08,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:27:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:27:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:27:08,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:08,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 1146 transitions, 34657 flow. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 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) [2024-11-16 19:27:08,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:08,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:09,907 INFO L124 PetriNetUnfolderBase]: 2193/4480 cut-off events. [2024-11-16 19:27:09,907 INFO L125 PetriNetUnfolderBase]: For 368187/368253 co-relation queries the response was YES. [2024-11-16 19:27:09,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60437 conditions, 4480 events. 2193/4480 cut-off events. For 368187/368253 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 35949 event pairs, 72 based on Foata normal form. 7/4484 useless extension candidates. Maximal degree in co-relation 60247. Up to 2851 conditions per place. [2024-11-16 19:27:09,980 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 997 selfloop transitions, 66 changer transitions 4/1188 dead transitions. [2024-11-16 19:27:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 1188 transitions, 37722 flow [2024-11-16 19:27:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:27:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:27:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-16 19:27:09,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-16 19:27:09,981 INFO L175 Difference]: Start difference. First operand has 494 places, 1146 transitions, 34657 flow. Second operand 6 states and 84 transitions. [2024-11-16 19:27:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 1188 transitions, 37722 flow [2024-11-16 19:27:11,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1188 transitions, 37461 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-11-16 19:27:11,802 INFO L231 Difference]: Finished difference. Result has 493 places, 1163 transitions, 35162 flow [2024-11-16 19:27:11,803 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34400, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1081, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=35162, PETRI_PLACES=493, PETRI_TRANSITIONS=1163} [2024-11-16 19:27:11,803 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 469 predicate places. [2024-11-16 19:27:11,803 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 1163 transitions, 35162 flow [2024-11-16 19:27:11,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 18 states have internal predecessors, (170), 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) [2024-11-16 19:27:11,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:11,804 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:11,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:12,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:12,004 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:12,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 697131439, now seen corresponding path program 42 times [2024-11-16 19:27:12,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924551560] [2024-11-16 19:27:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:12,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924551560] [2024-11-16 19:27:12,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924551560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302504811] [2024-11-16 19:27:12,149 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:27:12,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:12,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:12,150 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:12,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-16 19:27:12,196 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:27:12,196 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:12,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:12,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:12,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:12,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302504811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:12,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:12,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-16 19:27:12,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066624116] [2024-11-16 19:27:12,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:12,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:27:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:27:12,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:27:12,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:12,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1163 transitions, 35162 flow. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 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) [2024-11-16 19:27:12,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:12,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:12,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:14,051 INFO L124 PetriNetUnfolderBase]: 2195/4496 cut-off events. [2024-11-16 19:27:14,051 INFO L125 PetriNetUnfolderBase]: For 371033/371099 co-relation queries the response was YES. [2024-11-16 19:27:14,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60695 conditions, 4496 events. 2195/4496 cut-off events. For 371033/371099 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 36141 event pairs, 72 based on Foata normal form. 7/4502 useless extension candidates. Maximal degree in co-relation 60503. Up to 2853 conditions per place. [2024-11-16 19:27:14,127 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 999 selfloop transitions, 58 changer transitions 11/1189 dead transitions. [2024-11-16 19:27:14,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1189 transitions, 37793 flow [2024-11-16 19:27:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:27:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:27:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-11-16 19:27:14,128 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-16 19:27:14,128 INFO L175 Difference]: Start difference. First operand has 493 places, 1163 transitions, 35162 flow. Second operand 6 states and 84 transitions. [2024-11-16 19:27:14,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1189 transitions, 37793 flow [2024-11-16 19:27:16,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1189 transitions, 37733 flow, removed 30 selfloop flow, removed 1 redundant places. [2024-11-16 19:27:16,125 INFO L231 Difference]: Finished difference. Result has 499 places, 1159 transitions, 35145 flow [2024-11-16 19:27:16,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=35114, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=35145, PETRI_PLACES=499, PETRI_TRANSITIONS=1159} [2024-11-16 19:27:16,126 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 475 predicate places. [2024-11-16 19:27:16,126 INFO L471 AbstractCegarLoop]: Abstraction has has 499 places, 1159 transitions, 35145 flow [2024-11-16 19:27:16,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 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) [2024-11-16 19:27:16,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:16,126 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:16,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:16,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-16 19:27:16,327 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:16,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1279770335, now seen corresponding path program 43 times [2024-11-16 19:27:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849131733] [2024-11-16 19:27:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:16,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:16,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849131733] [2024-11-16 19:27:16,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849131733] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:16,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444045235] [2024-11-16 19:27:16,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:27:16,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:16,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:16,481 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:16,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-16 19:27:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:16,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:16,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 19:27:16,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:16,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444045235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:16,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-16 19:27:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060880595] [2024-11-16 19:27:16,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:16,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:27:16,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:27:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:27:16,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:16,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 1159 transitions, 35145 flow. Second operand has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-16 19:27:16,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:16,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:16,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:18,350 INFO L124 PetriNetUnfolderBase]: 2167/4454 cut-off events. [2024-11-16 19:27:18,350 INFO L125 PetriNetUnfolderBase]: For 369223/369289 co-relation queries the response was YES. [2024-11-16 19:27:18,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60264 conditions, 4454 events. 2167/4454 cut-off events. For 369223/369289 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 35857 event pairs, 68 based on Foata normal form. 7/4460 useless extension candidates. Maximal degree in co-relation 60069. Up to 2853 conditions per place. [2024-11-16 19:27:18,425 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 989 selfloop transitions, 60 changer transitions 11/1181 dead transitions. [2024-11-16 19:27:18,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1181 transitions, 37612 flow [2024-11-16 19:27:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:27:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:27:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-11-16 19:27:18,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-16 19:27:18,426 INFO L175 Difference]: Start difference. First operand has 499 places, 1159 transitions, 35145 flow. Second operand 7 states and 93 transitions. [2024-11-16 19:27:18,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 1181 transitions, 37612 flow [2024-11-16 19:27:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 1181 transitions, 37527 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-16 19:27:20,554 INFO L231 Difference]: Finished difference. Result has 503 places, 1155 transitions, 35164 flow [2024-11-16 19:27:20,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=35062, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1099, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35164, PETRI_PLACES=503, PETRI_TRANSITIONS=1155} [2024-11-16 19:27:20,555 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 479 predicate places. [2024-11-16 19:27:20,555 INFO L471 AbstractCegarLoop]: Abstraction has has 503 places, 1155 transitions, 35164 flow [2024-11-16 19:27:20,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.470588235294118) internal successors, (161), 17 states have internal predecessors, (161), 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) [2024-11-16 19:27:20,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:20,555 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:20,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:20,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-16 19:27:20,756 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:20,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -846192313, now seen corresponding path program 44 times [2024-11-16 19:27:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206040789] [2024-11-16 19:27:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:20,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206040789] [2024-11-16 19:27:20,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206040789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051385989] [2024-11-16 19:27:20,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:27:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:20,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:20,943 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:20,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-16 19:27:20,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:20,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:20,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:20,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:21,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051385989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:21,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:21,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-11-16 19:27:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585967299] [2024-11-16 19:27:21,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:21,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-16 19:27:21,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:21,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-16 19:27:21,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:27:21,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:21,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1155 transitions, 35164 flow. Second operand has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 17 states have internal predecessors, (160), 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) [2024-11-16 19:27:21,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:21,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:22,995 INFO L124 PetriNetUnfolderBase]: 2208/4549 cut-off events. [2024-11-16 19:27:22,995 INFO L125 PetriNetUnfolderBase]: For 379414/379480 co-relation queries the response was YES. [2024-11-16 19:27:23,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61556 conditions, 4549 events. 2208/4549 cut-off events. For 379414/379480 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 36773 event pairs, 66 based on Foata normal form. 7/4554 useless extension candidates. Maximal degree in co-relation 61360. Up to 2844 conditions per place. [2024-11-16 19:27:23,074 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 984 selfloop transitions, 100 changer transitions 4/1209 dead transitions. [2024-11-16 19:27:23,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 1209 transitions, 38348 flow [2024-11-16 19:27:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:27:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:27:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-11-16 19:27:23,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-16 19:27:23,075 INFO L175 Difference]: Start difference. First operand has 503 places, 1155 transitions, 35164 flow. Second operand 9 states and 120 transitions. [2024-11-16 19:27:23,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 1209 transitions, 38348 flow [2024-11-16 19:27:25,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 1209 transitions, 38209 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-11-16 19:27:25,210 INFO L231 Difference]: Finished difference. Result has 510 places, 1180 transitions, 36025 flow [2024-11-16 19:27:25,211 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=35029, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=36025, PETRI_PLACES=510, PETRI_TRANSITIONS=1180} [2024-11-16 19:27:25,211 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 486 predicate places. [2024-11-16 19:27:25,211 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 1180 transitions, 36025 flow [2024-11-16 19:27:25,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.411764705882353) internal successors, (160), 17 states have internal predecessors, (160), 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) [2024-11-16 19:27:25,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:25,212 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:25,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:25,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-16 19:27:25,412 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:27:25,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1029146999, now seen corresponding path program 45 times [2024-11-16 19:27:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569743632] [2024-11-16 19:27:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:25,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569743632] [2024-11-16 19:27:25,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569743632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:25,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010948753] [2024-11-16 19:27:25,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:27:25,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:25,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:25,559 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:25,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-16 19:27:25,606 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-16 19:27:25,606 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:25,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 19:27:25,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:25,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:25,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:27:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010948753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:25,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:25,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-11-16 19:27:25,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826444259] [2024-11-16 19:27:25,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:25,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:27:25,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:27:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:27:25,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 24 [2024-11-16 19:27:25,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 1180 transitions, 36025 flow. Second operand has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 19 states have internal predecessors, (177), 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) [2024-11-16 19:27:25,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:25,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 24 [2024-11-16 19:27:25,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand